This Week in Solar

Exact Solar

A weekly look at what's new in solar, brought to you by Exact Solar. Clean energy news, policy updates, and stories that matter. exactsolar.substack.com

  1. Elon Musk Planning to Double US Solar Manufacturing Capacity

    2d ago

    Elon Musk Planning to Double US Solar Manufacturing Capacity

    What’s New: Earlier this year, Elon Musk set an aggressive goal for Tesla and SpaceX: to build 100 gigawatts (GW) of annual solar manufacturing capacity in the United States within the next three years. The plan’s moving forward, but there’s a lot to overcome. You can listen to this episode here, or on: * Substack * YouTube * Apple Podcasts * Spotify Why it Matters: To put this into perspective, the entire U.S. solar industry added 43.2 GW of capacity in 2025, and America’s largest domestic manufacturer, First Solar, projects adding 18 GW of capacity by 2027. If successful, Tesla alone would more than double the entire country’s domestic solar manufacturing capacity. The center of this planned expansion is a massive new factory under development in Brookshire, Texas, right next to Tesla’s existing Megapack Megafactory. Here’s where it gets really interesting. Normally, solar panels that are “manufactured” in the U.S. are actually just “assembled” in the U.S. Making a solar panel is a multi-step process that starts with raw polysilicon that’s turned into ingots, wafers, solar cells, and finally the finished module. Because building solar cell manufacturing lines requires massive capital investments, highly specialized cleanroom environments, and complex chemical processing, U.S. companies don’t generally manufacture all the components. Instead, they import ready-made photovoltaic cells (overwhelmingly made by Chinese manufacturers or their subsidiaries in Southeast Asia) and perform only the final mechanical assembly in America. This final stage involves soldering the imported cells together, sealing them between protective glass and a backsheet, and framing them in aluminum. Tesla is designing this factory to be completely vertically integrated. That means the process will include: * Ingot growth and wafer slicing * Photovoltaic (PV) cell production * Finished module and panel assembly While the surging electricity demand from AI data centers and electrification makes the timing perfect, there are a few logistical issues to overcome: * Supply Chain & Sourcing: Tesla is reportedly spending nearly $3 billion to purchase cell manufacturing equipment from top Chinese suppliers. However, there are risks, including U.S. Section 232 tariffs on raw materials like polysilicon, and potential Chinese export restrictions on solar tech. * Massive Power Demands: Operating 100 GW of shared cell and module manufacturing will require up to 1,200 MW of power. The industrial transformer market faces two-year wait times, but Tesla hopes to bypass this by manufacturing its own transformers. * Space and Labor Constraints: Producing 100 GW will require an estimated 43 million square feet of factory space (four times the size of Tesla’s Gigafactory Texas) and an influx of roughly 22,000 workers (I mean, hey, it’s more jobs than a data center). Hitting 100 GW by 2028 is highly improbable. But Elon Musk is famous for convincing investors he can do the impossible, and then finding ways to pull it off. If Tesla successfully executes even a third of this plan in the next three years, they’ll be a dominant force in the American solar energy market. By manufacturing the panels, the inverters, the home batteries (Powerwall), and utility-scale storage (Megapack), Tesla could offer home and business owners a domestically manufactured “solar energy system in a box” that doesn’t need any non-Tesla components. It could also make solar even more cost-effective for anyone who invests in a solar energy system with a reputable, locally-owned company like Exact Solar. Sources: Assessing Elon Musk’s massive 100 GW solar ambitions Tesla is building a massive Texas solar factory in its clearest push yet for 100 GW How Tesla’s Ambitious Solar Plans Could Soon Power the Stock Higher This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit exactsolar.substack.com

    5 min
  2. Episode 100! You Don't Need Permission to Use Solar: Mr. Money Mustache

    4d ago

    Episode 100! You Don't Need Permission to Use Solar: Mr. Money Mustache

    In This Week In Solar’s one hundredth episode, Aaron Nichols sits down with Mr. Money Mustache. They dive into the unnecessary red tape surrounding traditional solar installations and explore some highly unconventional, DIY ways to capture the sun’s energy without asking for permission. Pete became an internet legend under the pseudonym Mr. Money Mustache. By optimizing his spending, earning, and investing (and always maximizing for fun while minimizing cost), Pete managed to retire at the age of 30. Pete is also a self-proclaimed “eco-nerd” who loves harnessing the free magic energy from the sky that is solar power. You can listen to this episode here, or on: * YouTube * Apple Podcasts * Spotify Expect to learn: * How Pete bypassed city permits by buying cheap used solar panels on Craigslist and wiring them directly into his electric water heater for free hot water. * Why solar is so expensive in the United States compared to countries like Germany and Australia (hint: it’s mostly administrative red tape). * Pete’s wild DIY trick using a $20 farmer’s bucket heater and a direct solar connection to turn his hot tub into a 120-degree cauldron of free, sun-powered hot water. * How to make sure you’re working with a reputable, locally owned solar installer like Exact Solar. Quote from the episode: “It takes very little resources to manufacture a solar panel... You put it in the sun, it's paid back its manufacturing costs within something like three months in terms of the embodied energy. And then it's like 30 more years of profit that you're helping the earth.” — Pete (Mr. Money Mustache) Transcript: Aaron Nichols Hey guys, a quick note before today’s episode with Mr. Money Mustache. Pete, who I interview, has a huge risk tolerance. He’s known for doing out-there things and he’s gonna describe some things that are pretty unsafe. Now, if you are interested in putting solar on your home, consult with qualified professionals. Electricity is no joke. You can really hurt yourself and we would hate to see that. So, please talk to us at X-ACC Solar if you live in New Jersey or Pennsylvania, if you’re thinking of putting solar on your home, and do not go messing around with the electricity in your own home unless you have qualifications. Now, without further ado, enjoy today’s interview with Mr. Money Mustache. Aaron Nichols Pete, I know you as Pete. The world knows you as Mr. Money Mustache. Not too long ago, you asked me to help you break down the solar energy system you’d put on your roof and you’d done something really unique with it. So I’d like to launch into that story. Mr. Money Mustache (Pete) Oh yeah. Sure. Okay. So the background is that I’m an electrical guy in the past, like an electrical engineer, and I’ve done wiring, full houses. So I’m comfortable with all your electricity stuff. But what I don’t like is a lot of red tape and permits and high fees that usually comes with solar, especially like the city we’re in right now, Longmont, is a little bit solar unfriendly compared to some other cities. So I just had a bunch of solar panels that I got off of Craigslist and I wired them up and really just chucked them onto my roof. I didn’t even mount them. I just made like a little metal frame and set them in there. And then I ran that DC current right into an electric water heater. And because of the principles of electricity, a heating element doesn’t care whether you’ve done gone through a fancy inverter and made AC or not, it’s just like solar panels right into the water heater and then I got free hot water for like a year and a half total cost of like just the cost of the solar panels on Craigslist so maybe like $800 of solar panels and I made about $400 of electricity with them in just the first, like per year I guess. So it’s like a giant return on investment compared to these systems where you spend many thousands of dollars in order to save like a little bit more per year. But it takes like sometimes 15 or 20 years to pay it back. Aaron Nichols So for anyone who doesn’t know, I mean you have written online and published all sorts of stuff about how to financially and how otherwise optimize your life. Would you just give the audience an overview of who you are, what you’re about. Mr. Money Mustache (Pete) Yeah, okay, that’s a bigger story. I, on the internet, I write as Mr. Money Mustache, although my real identity is not a secret either. And the basic idea is I like to optimize everything, maximizing for fun, preferably at minimal cost, especially when I was younger, when I didn’t have a lot of money. So what that led to is optimizing my whole spending and earning and investing. And it led to me being able to retire when I was 30 years old, just in time to start raising a child, get married, raising a kid and now I’ve been retired for like almost 22 years because I’m like coming up on 52 years old so it’s just been like a giant fun story of freedom and then I decided to start writing about this at some point and that’s where the Mr. Money Mustache blog was born. Aaron Nichols Yeah and you’ve been a big fan of solar for a long time I mean the building we’re sitting in now which for anyone who doesn’t know you own this building it’s like half co-working space half community center yeah and it is powered by the Sun. Mr. Money Mustache (Pete) Yeah somewhat like it’s a grid-tied solar system and during the summer it makes more electricity than we use and during the winter it runs a deficit so we have to pay a power bill and pull it out of the grid. Aaron Nichols So why are you such a fan of solar? Mr. Money Mustache (Pete) Just because it’s magic free energy from the sky. It’s like raining the equivalent of money down onto you everywhere on earth. So why wouldn’t you want to harvest it? It just seems super cool to me. Aaron Nichols Yeah. I remember, I mean, you’re actually one of the reasons I wound up in the solar industry was reading your story of how you actually got solar on this building. Mr. Money Mustache (Pete) Oh, I didn’t know that. Aaron Nichols Yeah. This was years ago before I was still a vagabond just traveling before I decided to do the installer training that I did and everything that took me here I was just like my god he made solar sound so cool. Mr. Money Mustache (Pete) Yeah well thanks. Yeah. And I also like it because I’m a closet eco nerd as well right like I care about the environment I don’t like pollution so anytime I can displace fossil fuels with clean energy I like that too. But if you do it with the right little tweaks on how you do it it can be more profitable and less hassle and that’s also what I like. Aaron Nichols So let’s talk about ways that people can use this amazing technology without permission and also how they can be safe doing so. Mr. Money Mustache (Pete) Yeah. Yeah. Some of the stuff I do is not always safe. Aaron Nichols I’ve been with you for some of those experiences. Mr. Money Mustache (Pete) Yeah. Like when we took the tree down to the coworking space. Aaron Nichols Oh yeah. Some big heavy stuff falling down. Mr. Money Mustache (Pete) Yeah. I’m a little bit of a honey badger. I might have used up a couple of my nine lives if I were a cat. So don’t exactly do what I do, but you can choose the things that are safe. So what I would recommend... What first comes to mind with today’s solar environment is you buy one of those like all-in-one solar generator battery units, have dropped in price so much. Your solar panels go straight into that and it’s just got a bunch of plugs on the front. And if you get a big enough one, you can have thousands of watts of solar going in there and thousands of watts coming out to power all your stuff, like your hot tub and your electric car and anything else that uses a lot of power. And it can be completely off grid. So you don’t need a permit to do it. And that’s the easiest way to get comfortable and have some fun with solar. And then you can scale up from there. And then there’s like the new laws, which you might mention in this podcast that allow you to have like a mini grid tide system, right? Aaron Nichols Yeah. Mr. Money Mustache (Pete) Then of course, if you have a big enough house and a big enough budget, then it starts to shift over to become profitable to do the big array and make it grid tied. And that’s what we did here at this building because I really wanted it to make a surplus of power and then, you know, get credits that last through the seasons. Aaron Nichols Yeah. Big fan of the battery option, just getting a little battery and plugging appliances into it because power’s just getting more and more expensive. Like you said, those things are cheap and that’s such a great option, especially for, let’s say, renters who don’t own their home. They don’t have the option to put solar on their roofs, but their bills just keep going up and up. There’s nothing stopping you. And it’s not even dangerous from buying a solar panel on Craigslist, buying a battery bank on Craigslist and plugging your refrigerator into it. Yeah, and the cool thing is, especially I moved from Longmont to Denver, in Denver we have time of use pricing and from 5 to 9 p.m. each day the price triples just for those few hours. So you can do tricks like have one of those batteries on a little timer, even if you didn’t have solar it could just charge from the grid and then it flips off the power supply at 5 o’clock and then your fridge runs from 5 to 9 on cheap power and then it recharges itself after hours, simplest system of all. We can later like put in the show notes or something exactly how this would work. So that’s level one. Or if you plug some solar panels into that low cost battery, then you don’t even have to charge it from the grid. Anytime you have time of use pricing, then it becomes like t

    20 min
  3. Battery Storage Sets Q1 Record While Fueling AI Boom

    May 22

    Battery Storage Sets Q1 Record While Fueling AI Boom

    What’s new: The U.S. energy storage sector just posted its strongest first quarter in history, installing 9.7 Gigawatt-hours (GWh) of new capacity. Why it matters: I don’t like to throw large numbers at you without context. Here’s what you need to know to understand what 9.7 GWh means: * Battery capacity is measured in energy. Energy is power (measured in Watts) times time (expressed in hours). Whenever you see something measured in kilowatt, Megawatt, or Gigawatt hours, that’s a measure of how long that amount of stored energy can power an electrical load. When we’re sizing batteries for home and business owners at Exact Solar, we always ask, “What do you want to power, and for how long?” * It’s enough energy to power ~300,000 homes for a full day in an outage. If that much capacity were backing up New York City, it’d power the whole city for an hour and a half in a full outage. It’s a ton of energy, and we’re deploying it at breakneck speed. Battery deployment is one of the best solutions to the many problems that we’re facing with energy prices in the U.S. Wholesale power costs are soaring, and geopolitical tensions continue to drive up fuel costs. Data centers have caused a massive surge in electricity demand. You don’t need to have a deep understanding of energy markets to know that this is a mess that won’t be easily solved. Right now, everyone wants power from a grid that was built before many people’s grandparents were born and desperately needs repairs. It’s a perfect storm that’s likely going to get worse before it gets better. On top of all of this, extreme storms and power outages now happen far more frequently. What’s standing in the way: Washington politics. According to the Solar Energy Industries Association (SEIA), 467 solar and storage projects currently have permits pending and are vulnerable to politically motivated delays. Industry leaders warn that stalling these permits threatens American energy security and could push electricity bills even higher. The U.S. is rapidly building the storage capacity needed to support AI’s power needs and stabilize the grid, but maintaining this momentum will require clearing federal permitting bottlenecks. Sources US energy storage has record breaking Q1 2026 Energy Storage Market Outlook Q2 2026 SEIA: AI is fueling a massive US energy storage boom This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit exactsolar.substack.com

    4 min
  4. It's Way Too Hard to Connect Solar to the Grid: Vaughan Woodruff

    May 20

    It's Way Too Hard to Connect Solar to the Grid: Vaughan Woodruff

    Aaron talks with Vaughan Woodruff, the founder of Equinox DG. Vaughan’s an interconnection expert, industry veteran, and “muck shoveler” who tackles bureaucratic and technical hurdles that no one else wants to take on. If you’ve ever wondered why we haven’t connected way more solar to the grid, this one’s for you. Listen to this episode here, or on: * YouTube * Apple Podcasts * Spotify Connect with Vaughan on LinkedIn here. Expect to learn: * Why connecting solar to the grid has become a nightmare (13 states still don’t even regulate the process). * How a federal mandate 20 years ago led to 39 different sets of state rules. Quotes from the episode: “We used to use libraries. We went to the library to get information and then we downloaded it. We now are seeing our kids learn off the internet where they are uploading things and downloading things. That’s what’s happening on the grid.” — Vaughan Woodruff “If we do this right, what I think this does is really enhances people’s control over their own economic and political lives... it’s about getting that power back into the hands of people.” — Vaughan Woodruff Transcript: Aaron Nichols: Vaughan, you’re probably one of the only interconnection experts I know. You’re definitely the only public-facing interconnection expert I know. And for anyone listening who’s unfamiliar, can you just give a quick definition of interconnection and then give a high-level overview of the problems we’re facing as an industry? Vaughan Woodruff: Well, first off, you’re living the good life if you can keep us at arm’s length. That’s great. Interconnection is the process the utility uses in order to make sure that anything that it connects to its grid is safe. This happens at the transmission level for big utility scale projects. The stuff I focus on is really on the distribution system—so everything ranging from small residential projects up to say community solar scale projects. And so the interconnection process is typically, you know, a customer or someone acting on behalf of that customer applies to the utility. The utility goes through a set of procedures to check whether things are okay. And then it either gives the thumbs up or thumbs down or a thumbs up and says, “Hey, it’s going to cost this much money to upgrade the grid in order to be able to accommodate your project.” And the big piece that I focus on is how we regulate utilities for that because they’re monopoly utilities and really regulating them is how we make sure that we’re serving the public interest. Aaron Nichols: Okay, awesome. Will you give just a general overview of who you are in the solar industry and what your day-to-day life looks like at Equinox DG? Vaughan Woodruff: Yeah, I don’t know what I am in the industry. I’m a little bit of a vagabond. I started out in this industry like 20 years ago when it was largely a plumbing and heating industry. We were doing solar water heating at that time. And over the years as PV got more inexpensive and more affordable, it largely converted into an electrical contracting world. I started a company that started in solar water heating, moved into electrification—so solar PV, energy storage, heat pumps, as well as EV charging. Man, it’s been so long, I sometimes can’t remember. I did that for roughly 12 years with the founder and ran the company. And then we merged with a larger national, multi-state company up here in the Northeast. I’m originally from Maine, where I live now. I have always kind of jumped between local work here in Maine—Maine’s a nice small state, a lot of connections here. I was the chair of the industry trade group through a pretty tumultuous gubernatorial administration here, so really worked to kind of build coalitions, both within the industry and with other advocates, and even with utilities and commissioners. Most recently, I’ve really focused on interconnection. It’s an issue that really impacts our ability to deploy solar, energy storage, and EVs that are able to backfeed to the grid at scale. It’s a really complicated and bureaucratic process. For some reason in my life, I always pick the things that nobody likes to do. Aaron Nichols: You’re a muck shoveler. Vaughan Woodruff: Yes, exactly. Beating your head against the wall. Because at the end of the day, it’s impact, right? There’s not a lot of glory in it, but it’s absolutely important. Interconnection is just really important to have folks in the weeds doing this stuff who understand how it works and can help bring coalitions together to drive change. I’m trying to do that, but we’ll see. My success will be measured probably as I’m sitting in my rocking chair late in life reflecting back. Aaron Nichols: Well, for everyone who’s listening, welcome back to This Week in Solar. I’m your host, Aaron Nichols, the research and policy specialist here at Exact Solar in Newtown, Pennsylvania. My guest today is Vaughan Woodruff, who’s an interconnection expert and industry veteran, as you heard. It was lovely to hear you say the thing about the rocking chair. I talk about that all the time. I believe that if I spend my life putting my energy towards deploying as much clean energy as I possibly can, I’ll be able to look back at the end of it and say that I had lived a good life and that it mattered. Vaughan Woodruff: Well, I saw you post about a grandfather who kind of gave you an earful. I had a grandfather who sat in that rocking chair. I think we probably had some examples there for us to think about as we have a chance to think about life in its full breadth. Aaron Nichols: Yeah, absolutely man. So would you give just a general high-level overview of the problems we’re facing related to interconnection as a country and why it’s become such like a tangled messy ball of string? Vaughan Woodruff: Yeah, the answer to that question largely dates back 20 years ago. In the mid-2000s, the Feds made it very clear that this was a state responsibility to regulate. There was actually a bill that got passed, the Energy Act in 2005, that said essentially every state within the next couple of years should put together interconnection rules. At that point, a lot of states only had regulations on the books having to do with big utility-scale stuff where you have to do engineering studies for every single one of them. If you read the Energy Act—I won’t do it here because I want your listeners to stay engaged... it basically says you need to do this, every state you need to do this. And then at the end, if you look very carefully, it was an optional thing for the states to do because of “states’ rights.” What ended up happening from there were essentially maybe 39 different routes that states took. This process is essentially the same everywhere: you have a customer applying, the utility needs to assess the project and its grid to evaluate if it can be okayed in a few days or needs a big detailed study on the physics to figure out whether it’s safe. We have 37 different sets of rules and 13 states that don’t even regulate it—they just leave it up to the utilities. So at that point, it’s just whatever the utility feels like. A big part of this is really about having consistent, enforceable rules. We don’t have that. It makes it really, really complex. Aaron Nichols: Right. Yeah. I know that people in the industry love to talk about interconnection in Australia and how simple it is... How do we get somewhere to something like that as a country? How do we get the incentives right to make sure that we build a better system? Vaughan Woodruff: One of the challenges is that utilities in this country are incentivized to be conservative. Safety and reliability doesn’t benefit from taking lots of chances. You take chances and the grid goes down—that could be life and death. It’s bureaucratic. When new technologies like distributed energy resources come in, it butts heads against utility practices. Oftentimes the solutions actually benefit both. I was involved last year in a proceeding in New Hampshire where the utilities were initially very reluctant to look at IREC’s model. But after months of digging in, it became clear that good, strong, clear policies benefit the utilities and their staff as well. Number one, we need uniformity—some sort of underpinning foundation that’s roughly the same. In Australia, they have very high penetration rates and there’s a lot of innovation going on. I think at the end of the day, that diversity in the United States is wonderful but also challenging when it comes to scaling and standardization. Aaron Nichols: So if I’m hearing you right, it seems like the utilities have been regional monopolies forever and have been incentivized to move very, very slowly... Is that about right? Vaughan Woodruff: The paradigm has shifted. I like to think about it—we used to be libraries. We went to the library to get information and then we downloaded it. We now are seeing our kids learn off the internet where they are uploading things and downloading things. That’s what’s happening on the grid. People are now able to upload their energy and be generators and producers. That’s complicated. Now we’re expecting to see increasing amounts of renewable energy on the grid owned by a bunch of different people. States are grappling with how the utility model fundamentally changes. It used to be safety, reliability, and affordable costs. A lot of states are now saying there’s a fourth leg to that stool, which is decarbonization. Aaron Nichols: It is such an interesting problem. I think when I was reading Gretchen Bakke’s book, The Grid, she was talking about how we insist on talking about electricity as if it’s a commodity like boxes of bananas, but it’s not. It’s instantaneous. Vaughan Woodruff: Agreed. The grid is a really complicated thing. What we

    28 min
  5. State of The Solar Union: Sean White

    May 15

    State of The Solar Union: Sean White

    Since we started This Week In Solar last year, three news stories have gotten far more attention than any others: * Plug-In Solar * Large solar companies failing (Sunnova, Titan, Posigen, and Fredom Forever, specifically) * The One Big, Beautiful Bill. So in today’s episode, we sat with solar legend Sean White to get his opinion on all three. Sean is a self-described "chronic optimist” and solar pioneer dedicated to training the next generation of solar pros and finding the positive side of the solarcoaster’s ups and downs. He’s also very, very funny. If you’re looking for a light, optimistic take amidst all the doom and gloom, today’s episode is for you. Listen to this episode on: * YouTube * Apple Podcasts * Spotify Connect with Sean on LinkedIn here. Expect to learn: * Why plug-in (or balcony) solar comes with unique safety and electrical challenges. * Why seasoned solar pros should ignore high-profile company bankruptcies and just focus on building. Quotes from the episode: “It just goes to prove that the people in the solar industry are the coolest people in the world. And they're not out here for selfish reasons. They want people to be able to plug in their own solar.” — Sean White “They need to taper back all incentives. Don't cut them off all at once. Like 30% overnight is just stupid. It's bad for business, bad for jobs.” — Sean White Transcript: Aaron Nichols: Sean, welcome to Philly. Sean White: Aaron as well. Are we on your show or mine? Aaron Nichols: Yeah, we’re on my show. Sean White: We’re on your show. Yeah, yeah, yeah. Aren’t we? wait. No, I thought we were on my show. No, wait. You want to fight about it? Aaron Nichols: Well, why don’t we put it on both our shows? Sean, you’re here in Philly doing a sales training for Exact Solar. And there was a couple of things I wanted to get your opinion on because we are, you know, we do a news roundup here at This Week in Solar, which is my show. And I think the three stories that people have been most interested in in the last year that we’ve gotten the most attention and engagement on are first, plug-in solar, second, large solar companies failing, and third, the one big beautiful bill. So I wanted to, in that order, get your opinion on those things. As someone who’s been in the industry probably longer than I’ve been alive. Let’s start with plug-in solar. What are your thoughts on it? Sean White: Okay, you teenager. You expect me to remember three things in a row? Aaron Nichols: I’ll remember them for you. We can, we can go over them together. Sean White: Okay, maybe we can just combine it. And what was it? was plug-in solar. Aaron Nichols: It was big companies failing. Sean White: Yeah. And what one big beautiful thing that’s going on with tax credit is freezing out. I say we just treated it as three different things. So so um, so it was a plug in solar company that failed because of the one BBB. Aaron Nichols: I don’t think that’s happened yet because the plug-in solar hasn’t passed so it can’t fail because of the taking away of tax credit. Sean White: Okay, I was trying to like cheat and get out of it just with like answering one question. No, let’s take these. Aaron Nichols: Let’s take these all three of them. What is your opinion on plug-in solar? It’s getting a lot of momentum. Several states have just legalized it. Colorado is close. I know Maine and Virginia have legalized it. And we’re going to see more and more states starting to let people just buy their own systems and slap them down in the and plug them into a standard outlet. So what do you think about Sean White: You know what, I was kind of thinking, it’s kind of a DIY thing. And I thought it was kind of interesting that the people that are full force behind it are actually people that it might even hurt a little bit because they’re in the solar industry and they’re trying to do solar themselves. And now people are going to be like, why do I need you? can just plug. solar. So I think that’s kind of cool. And it just goes to prove that the people in the solar industry are the coolest people in the world. And they’re not out here for selfish reasons. They want people to be able to plug in their own solar. And, and so I was at the the inner solar medical, the smart or E and inner solar being part of it conference in Munich last year, where they’ve been doing plug in solar, they call balcony solar for a while, because they kind of pioneered it in Germany, where they pioneered stuff in the solar industry and it was was kind of interesting to me that they had like a big trade show biggest probably the second biggest solar trade show in the world after SNCC and They have like huge like aisles and aisles of plug-in solar companies, balcony solar companies. And they didn’t just have like people making the equipment. They actually had cool dudes that I was hanging out with and they were plug-in solar installers. And so they went and they made their own plug-in solar companies where they go out and help the homeowner. So if people like might be in the solar industry and they know how to do wire. and stuff like that, people might hire them to do it. And then you can be a solar installer that doesn’t do permits. Because that’s kind of the big thing about plugging solar. Aaron Nichols: Ooh, that is. Sean White: You don’t have to do permits. Aaron Nichols: Yeah. Yeah. And that’s part of what the law’s about. And I know they’re going to try to include it in the 2029 National Electrical Code. different states that are trying to do it. sounds like it might just be this huge thing that happens all at once. So it’s pretty cool. So potentially a lot of opportunity because like homeowners are going to want these mounted correctly, even though they plug into a standard outlet, the average person is not going to know how to mount them to their porch. Sean White: Yeah, or like they and they were kind of telling me because I was asking them about that too and they were just like, yeah, there’s just some people want to have somebody do it a little bit better. Right. It’s probably not that hard to do some of that stuff, but maybe to make it more symmetrical. And then a lot of these systems, I think, have batteries associated with them. So it is something that you should be able to pick up at your big box store and take it home and plug it in. have battery, have some PV, plug it into the wall, there you go. But I guess the one thing that makes it so you might not be able to do in certain states or like maybe it doesn’t comply with the code if the states don’t approve it is that what if you got a new one every week, kept on plugging it into your power adapter and then you’re like plugging in and plugging in and pretty soon you have like 20 plug-in solars on your giant balcony in one outlet. Aaron Nichols: has like 16 portable space eaters in it yeah don’t do that yeah I think someone mentioned that it might I think short out GFC I or like the current protection for anyone who doesn’t understand electrical acronyms and then you know like it would make it so that if there was water someone could touch the outlet and potentially electrocute themselves. I don’t know much about it, but I’ve heard that there’s some safety concerns we need to overcome. But most states have wattage limits. Like I think Colorado is 1,900 watts. think... Utah is 1.12, 1200 watts that you can have of balcony solar. Sean White: But I think also it’s probably very hard to tell and very hard to enforce. Aaron Nichols: Yeah. So it’d be interesting to see what happens when lots of people have it to see if anybody has a problem, you know, and they plug too many of them in. Because another thing that you know is homeowners. are going to comply with the rules, right? Sean White: Right. So you can only have as many wads like that. That’s another. Aaron Nichols: Yeah, we were talking about that the other day. Me and a friend was just like that, you know, so much of this depends on homeowner competence. But we live in America where. says there’s a sticker that says don’t put your head in here and turn it on. Sean White: Yeah, and what do I do when my head gets cold? So we have to assume that there’s going to be some kind of user error with plugging in solar. Aaron Nichols: Yeah. And so and so like, I think it’s one of those things where you could come up with all these different scenarios of like, yeah, like just like I was saying, to plug in a whole bunch of things into power strips and space heaters. It’s obviously stupid and probably unless they were just trying to be stupid on purpose to get their fire insurance. Sean White: for attention online. Aaron Nichols: It’s like the YouTube video, I wired 50 plug-in solar systems to each other to see what happens. Sean White: So it would be stupid and they’ll probably have stickers on them and it’ll say like, warning, do not plug more than two of these into this kind of outlet. Yeah. And I think some other things too that I was trying to think of like how, like you have a branch circuit and maybe you have multiple plugs going to one breaker. So if you have different branch circuits, you should be able to put different systems or you don’t want to put in that same branch circuit. You don’t want to put your plug-in solar in one of them in two space heaters into the other one. Like there’s some little things like that that could get people into trouble. So maybe there could be some kind of way to get a homeowner to be able to know what’s in that branch circuit. And maybe there should be some kind of way where it could be simple enough for a homeowner to understand. It’s like turn off the breaker. See which plugs turned off and then go out there and like the ones that turned off you put something over like do not use or something like that. Yeah. Or

    44 min
  6. How to Break Free From the Grid: Deep Patel

    May 13

    How to Break Free From the Grid: Deep Patel

    Aaron Nichols sits down with Deep Patel, Founder and CEO of Gigawatt, to explore how we can return to the original promise of the solar pioneers (power to the people). They discuss how the industry shifted from selling energy independence to pushing complicated financial products, the growing DIY solar installation movement, and how off-grid systems, coupled with technologies like Starlink, are creating economic opportunities worldwide. You can connect with Deep on LinkedIn here. Listen to this episode here, or on: * YouTube * Apple Podcasts * Spotify Expect to learn: * Why the solar industry drifted away from its counterculture roots * The red flags consumers should watch for when buying solar today. * How DIY solar kits are empowering tradespeople and curious homeowners to safely build their own code-compliant systems. Quote from the episode: “I think the biggest thing making a difference is we’re going to have cheap and extremely efficient energy storage. We finally cracked the code on how to store electricity. That was the missing link in solar, and now it’s a reality.” — Deep Patel Transcript: Aaron Nichols: Deep, before we talked, you sent me something that I thought was awesome. I’m just going to read it word for word because it just felt like such a cool manifesto. But you said, “If this transition is going to last, we need to return to the original promise of the solar pioneers. Power to the people. Real independence through ownership, transparency, and systems designed to serve homeowners and renters alike, including simple and accessible plug-in solar.” I would love to hear you expand on what you meant by that. Deep Patel: Yeah, absolutely. Thanks, Aaron, first of all, for having me on your show. I’m really glad that I get to tell this story about our mission statement. My business partner, Jeff Spies, and I had basically traveled up into Humboldt, California. He had introduced me to a bunch of solar pioneers that have been doing solar and battery storage since the late 70s. And these folks were basically living off the land. They were homesteading up in Northern California and they were living off grid. These were some of the first people in the US to have residential solar. I was really thrilled about their story and very interested in it. I realized what they were doing was a counterculture movement that was happening up there. They were saying, “I want to generate my own power and I want to own it.” Those were some of the first people that were installing solar panels on their homes. I feel like in 2006, when the industry first really started becoming more commercialized and capitalistic, we went away from those roots. Everything became about TPOs and PPAs and AVLs and all of this jargon, dealer fees, and this and that, right? People started coming into this industry and turning solar more into some type of projected financial savings. I felt like that went away from the roots of where this industry first started, which was freedom. It was owning your own power. It was resilience. And there’s a lot of companies like ours out there that are still sticking to that mission of bringing that power back to the people, where they get to own their own solar and storage. They can avoid all those dealer fees and do it a different way where they can maintain full control and transparency of the process. Aaron Nichols: I had a really cool reminder of that. My then-fiancee, now wife, got me a stay in an off-grid yurt for Christmas, and we rang in the New Year in that yurt. We had to hike three miles in to get there. And when we got there, it was a fireplace, and then a solar array that fed into a battery bank, and we had everything we needed. We had lighting, could run the electric stove. I mean, it was such an awesome off-grid independent experience. I’ve been blown away by the creativity that people can exhibit using solar energy and the ways that they can set up things like that. I’ve found that as solar is becoming less of a hippie sort of green thing and more and more people get interested in it, that all of those things are actually very interesting for conservatives. All of those reasons that people loved solar back then are why people who are more right-leaning love solar now. Deep Patel: Yeah, absolutely. And I think solar is one thing our divided country can all agree on is to own your own independence. It’s a very free market. To own your own power is something that, whether you’re a Democrat or a Republican, resonates with both sides. Our country is founded on independence. I think this message is something that brings everyone together. Aaron Nichols: Yeah, it’s so true. You also wrote that solar has drifted from selling independence to selling financial products. Do you think that shift was a mistake or do you think it was necessary to get the industry to where it is today? Deep Patel: I think at a certain time period, it did make a lot of sense. Cost of panels, batteries, inverters, and things were so high at one point. And to go solar was just so challenging. None of the banks would want to even lend you money to do it. But now the prices of hardware and soft costs have gone down substantially. I mean, they’re still pretty high, but they’ve substantially gone down since then. Lithium battery prices are really going down fast. There’s a lot of banks that are comfortable now. You can just go out and get a HELOC or some type of regular loan, like how people typically finance typical home improvements. That’s the cheapest form of money they can use to improve their homes. Now that you can do that, the need for all of these specialized financial products that kind of trap people into these long-term financial instruments are no longer necessary. They can own their own power, and it’s easier now than ever. Aaron Nichols: I think that’s a particularly interesting point because you actually spent some time in the finance world as well before you came to be the awesome solar entrepreneur that you are. So as someone who’s been in the finance world, what is it that makes you uncomfortable about the way you’ve seen finance and solar mix? Deep Patel: I just think the way it’s being pitched. As we know, these companies have sales groups that go into people’s homes, knock on their doors, and it’s a very complicated instrument. I could see a CPA understanding it. But when you’re talking to regular folks, there’s a lot of jargon and complications; they might not understand what they’re signing up for. And then there are dealer fees involved in these financial products, which are massive. These dealer fees add tens of thousands of dollars into the process to get a person instant financing, when they can just do a little bit of work to save tens of thousands of dollars and actually own it. So I think that financing has its place, but if it’s quick financing with a bunch of junk fees involved, I don’t think it’s a good thing for the end customer. Aaron Nichols: It’s not always easy for someone who’s shopping around for solar to tell the difference. I mean, we work really hard at Exact to make sure that we’re partnering with very ethical firms. But not every solar company is like that. So what are some red flags that you think people should look out for? Deep Patel: I would say high pressure is a big red flag. Like, “close it now at the kitchen table” kind of thing. False, extravagant promises, like, “Hey, everything’s covered for a lifetime.” Those embellishments of what’s realistic are a red flag. If it sounds too good to be true—like nothing’s ever going to go wrong, you just sign here, we’re going to take care of everything, and everything’s guaranteed—the world doesn’t work like that. It’s over-promising. A lot of these independent sales agents just want to make some commission, and it’s really easy to over-promise things to get someone to sign. As a consumer analyzing something, you have to ask: can they deliver on these promises? Is this grounded in reality? Aaron Nichols: I’m very lucky I grew up around a bunch of skeptical old Italians. So I grew up around a bunch of people that nobody was gonna sell anything to. Good for some things, bad for others. Sometimes I’m a little too skeptical. Deep Patel: Yeah, for sure. It’s good to be skeptical when you’re buying something, when you’re going to sign a $60,000 contract with a company. Aaron Nichols: Yeah, definitely. So I’d like to switch gears a little bit. I’m a big fan of interesting stories that solar enables. I think one of my favorite ones that I like to tell is that we built an off-grid system for a school. The company I work for, Exact Solar, is right in greater Philadelphia. The system powers a greenhouse with an off-grid system, and then students use that to grow produce that they either prepare for staff and parents in an on-site restaurant or sell in a local farmers market. Having had so much experience with the off-grid market, what are some of the coolest stories that some of the kits you sell have enabled? Deep Patel: Man, our kits are basically going everywhere. We have some US government projects where there are off-grid needs—having embassies or special facilities that have power reliability concerns. There are water pumping projects where customers are pumping water for treatment facilities or infrastructure. There’s been an off-grid school as well, here locally, I think in Joshua Tree. This school is completely off-grid, and these kids go to a school powered by an off-grid solar system. So we have a wide range of off-grid customers over the 20 years, but a lot of our customers are grid-tied, and they now want grid independence. Even though they’re connected to the grid, they just want to own their own power and store it. They don’t want to sell it back to the energy company; they want to be able to self-con

    27 min
  7. Not Everyone is Excited About Plug-In Solar

    May 8

    Not Everyone is Excited About Plug-In Solar

    Note: Apologies if you saw this go out on Monday and tried to watch the video. I accidentally sent it early. If you were waiting for the video, please enjoy! What’s New: Plug-in solar panels are cheap, easy to install, and massively popular in Europe. But as more states legalize them in the U.S., utilities and electrical experts are raising red flags about uniquely American safety hazards. Why it Matters: States like Utah, Virginia, Maryland, Maine, and Colorado have passed or are about to pass laws allowing consumers to bypass the complicated utility connection agreements usually required for rooftop solar. On paper, this looks great. People who normally can’t save with solar, like renters, can just buy a kit, hang it on a balcony, and save money. Plug-in solar offers true “power to the people.” So why aren’t we seeing it roll out faster? Utilities have successfully stalled similar bills in states like Georgia and Wyoming, citing the need to protect consumers and grid workers. While advocates claim that utilities are just trying to protect their monopolies, there are some legitimate, documented dangers that we need to overcome before we can deploy plug-in solar in the U.S. I’m going to go through the biggest concerns in no particular order here. The GFCI Issue: According to a whitepaper by UL Solutions, backfeeding electricity into standard branch circuits can permanently damage Ground-Fault Circuit-Interrupter (GFCI) breakers and outlets. If a GFCI fails, the circuit remains energized but loses its ability to protect against lethal shock hazards in wet locations like patios or kitchens. “Significant concerns have been noted related to the misuse of GFCIs when backfed. This damage has resulted in GFCI circuitry failure... leaving the branch circuit unprotected from electric shock hazards.” — UL Solutions Whitepaper America’s Grid is Different Than Germany’s: Advocates often point to Germany’s 1.2 million safe plug-in installations. However, the North American electrical grid is fundamentally different. Germany uses a floating system with whole-house residual current detectors. The U.S. relies on circuit-level GFCI protection. This is not an impossible problem to overcome, but it’s a difficult one. Lineworker Safety: Utilities argue that during an outage, unregulated plug-in panels could continue to push electricity back onto the grid, creating a life-threatening shock hazard for utility lineworkers trying to restore power. Shock Risk: Plug-in solar kits are designed to back-feed the grid with a standard 120V electrical plug. That means that power is flowing from the panels to the outlet. Consumers are not used to this (every appliance you own pulls power out of the wall, not puts it in). If the kits are not designed to shut off power the instant that they are unplugged, then someone could touch the prongs of the plug and shock themselves. Solar panels are always live. If they’re in the sun, they’re making power, so the inverter in a plug-in solar kit needs to be able to cut off power the second that it’s unplugged. Overloaded Circuits & Fire Risks: Unlike professional installations that use dedicated circuits, plug-in panels rely on consumer common sense. As any American knows, there’s a reason that your microwave says “please don’t put your head in here and turn it on” in the owner’s manual. Common sense is uncommon. A homeowner could easily plug a 600-watt solar array into the same outdoor circuit powering a hot tub, risking electrical fires. Overheating: Because American circuits aren’t designed for two-way power flow, there’s a chance that plug-in kits could overheat wires and cause fires, depending on how close to the electrical panel they’re plugged in. What’s next: UL Solutions launched a testing and certification program for plug-in solar in January to address these hazards. Certifications are expected within months, but could take more than a year. For those already using these kits, experts recommend buying a cheap GFCI outlet tester (they run around $10-$20) to ensure their home’s shock-protection systems haven’t been quietly fried by backfed solar power. Sources: Easy-to-use solar panels are coming, but utilities are trying to delay them Bright Saver State Tracker Clearing the way for plug-in solar Why you should never invest in “plug-in” solar panels This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit exactsolar.substack.com

    5 min
  8. Lisa Shulock: Why Isn't Solar On Every Commercial Building?

    May 6

    Lisa Shulock: Why Isn't Solar On Every Commercial Building?

    Aaron Nichols talks with Lisa Shulock, Director of Commercial Programs at the Philadelphia Energy Authority. Lisa is a policy expert dedicated to proving that solar is a powerful tool for economic stability and poverty reduction (and not just for hippie tree-huggers). Listen to this episode on: * YouTube * Apple Podcasts * Spotify Connect with Lisa on LinkedIn here. Expect to learn: * Why commercial landlords often hesitate to invest in rooftop solar. * Why seasoned executives who know how to buy real estate still find solar proposals intimidating and difficult to compare. * How changing state regulations in Pennsylvania could transform empty warehouse roofs into local clean power plants. Quotes from the episode: “For commercial property owners, procuring solar is something most companies have no experience with... It doesn’t usually reach the top of an executive’s priority list to figure out how to do it because they don’t know where to turn for guidance.” — Lisa Shulock “80 years from now, I don’t think we’re going to be using fossil fuels any longer... the technologies we’re using now to convert the sun’s energy are going to be ubiquitous and incredibly inexpensive.” — Lisa Shulock Transcript Aaron Nichols: Lisa, there is so much available commercial real estate that we could put solar panels on. What do you think has held commercial solar back? Like, why don’t we see it on every warehouse in America? Lisa Shulock: Aaron, that’s such a good question. And I think there’s a number of different reasons. One is, historically, solar has a reputation of being expensive and only for elites or tree huggers like myself. But that’s not true. And I think this is a perception problem that the industry is confronting—has gotten better—challenging that, but it’s still a legacy with solar. In fact, the program that my organization, the Philadelphia Energy Authority runs called Solarize Greater Philadelphia, in our program for homeowners, in the last few years when we started offering a low cost lease option, more than 80% of the contracts signed for solar on a homeowner’s roof were with low and moderate income homeowners. So we’re totally blasting that misperception, but that’s certainly one factor. For commercial property owners, procuring solar—and this is true for residential as well, but for focusing on commercial, which is what I focus on—procuring solar is something most companies have no experience with. Like, they know how to buy office equipment, know, go buy a Xerox machine, they know how to do that. They need a vehicle, they know how to do that. If they haven’t done it at work, they’ve certainly done it at home. If they manage many, they certainly know how to lease or purchase buildings if that’s necessary. But very few people have experienced purchasing solar. And I think it’s kind of intimidating and it’s—doesn’t usually reach like the top of an executive’s priority list to figure out like, okay, if I wanna do this, how do I do it? Because they don’t know where to turn for guidance, I think. There’s two more things I would want to say. One is that even if it does get to the top of somebody’s list, it’s not always easy to compare solar proposals. So different companies, different solar developers, solar installers may make different assumptions about how much electricity they think is going to be used over the course of the 25-year lifespan each year, or what kind of financing solutions are offered, or what the rate of increase of utility prices will be. So when you’re looking at solar, one company might be comparing it to a different price than another. And sometimes, although fortunately very infrequently and obviously not Exact Solar, there are some unscrupulous actors in the market. So I think that is an impact as well. The program that we run that at again, Philadelphia Energy Authority in partnership with the Pennsylvania Solar Center, we’re addressing this problem by providing free technical assistance, including developing feasibility studies, distributing requests for proposals to solar developers, and then helping property owners to select the solar installer that provides the best value for them. So making that apples to apples comparison with the different proposals from solar developers. That’s one way we’re combating that particular issue. And then lastly, and maybe most importantly, I’m not really sure what order I would put these in, that again, I’m speaking of commercial properties. Most are owned by a developer or an investor, and then it’s rented to tenants. And it’s usually the tenants that pay for their utilities. So, while installing solar reduces electricity costs for the tenant, the owner is the one that needs to recoup the cost of the solar investment. So you’ve got this mismatch between the financial incentive. Even when a property owner has a lease that allows them to pass along the cost of the solar investment to the tenant, those leases, excuse me, are usually significantly shorter than the lifespan of the solar. So there could be a period when the owner is still paying back the cost of purchasing solar and maybe they don’t have a tenant that they can pass the cost to. So that is a significant barrier to solar on commercial properties. In Pennsylvania, we don’t have great financial incentives for solar. If you’re like me and you, when you travel and you, whether you’re driving over to New Jersey or up to New England and you look around for solar panels wherever you go, you’ll see that certain states have much more solar than we do in Pennsylvania. New Jersey has like all the same, you know, in terms of how much sun we get, it’s the same. What’s different is that some of the incentives are different in New Jersey. And even though it doesn’t feel like it right now, our commercial electricity rates are relatively low. They’re going up. We don’t want high electricity prices, of course, but higher prices do make the economics of solar pencil better. I mentioned a couple of the solutions to these problems. I can go into a lot more of them if you want me to, but that’s why we don’t see solar on every warehouse in every parking lot as much as I’d love to. Aaron Nichols: Yeah, I like to joke that, you know, a lot of people will say we don’t want solar in our neighborhood because it’s ugly, but you know, it’s very hard to make the case that you’re going to make a commercial warehouse worse to look at by putting solar panels on. Lisa Shulock: Yes, and I actually haven’t heard the ugly part before about solar. I’ve certainly heard it about wind turbines, but yeah. Aaron Nichols: Yeah. Yeah, we deal with a lot of homeowners who say like, we don’t want it on the front of the house because we just don’t like the way it looks. We deal with that. And thank you, by the way, for just, I noticed that you added that little caveat. You said there was a lot of unscrupulous actors, obviously not Exact Solar. So thank you for putting that in. I’m very— Lisa Shulock: Mmm. Some. Right. And I think there’s fewer in the market now. I think it’s a more competitive market. When we first launched Solarize in Philadelphia back in 2016, 2017, in the residential space, there were a lot of companies that were taking advantage of customers. We don’t see that nearly as much anymore. And I think that’s in part because we’ve been able to grow the market working with Exact Solar and some of the other Solarize partners in the Philadelphia region. Aaron Nichols: So going back to business owners, why do you think, like when we’re talking about the education gap, the knowledge gap, and also the lack of incentives for them to spread the word, I mean it seems like if a business owner does go solar and they dramatically lower their operating costs, they’re probably less inclined to tell another business owner about it just because of competition than say like, Jim would be if he put solar on his house and he lowers his bills and he tells all his neighbors. I think that’s one aspect. I also know that business owners are just much harder to get in touch with, but what do you think the average business owner doesn’t know about how much going solar can actually help them? Lisa Shulock: Yeah, I think a little bit back to what I spoke about earlier, I think most businesses don’t know that solar can really help their bottom line. And it’s interesting that you think that maybe they would be reluctant to share with their competitors. Maybe. But I also think that I certainly—like I think there’s lots of associations where best practices are shared. I’m not sure that it’s not like it’s an industry secret that solar can help reduce the bottom line. I think they also don’t know that it is affordable and that there are financing products that make it possible to go solar. And I certainly don’t need to tell you this, Aaron, but I think one of the most significant things about solar for anybody who has to pay for electric utilities is that it stabilizes and makes your electricity costs predictable and stable for the next 25 to 30 years. You’re hedging on the electricity market and you know whatever you’re paying to pay back a loan that you’ve taken out or if you’re paying a third party leasing company or paying through a third party like a power purchase agreement, you know what that cost is going to be every single year. We have no idea what electricity rates are going to be 20 years from now, no less, just one or two years from now. So it gives you predictability and stability. I think that is probably even if in some cases, maybe somebody would be paying a little bit more now than they might to PECO or to another utility where they are, but what they can be guaranteed is it’s gonna be a better rate than at some point soon in the future. Aaron Nichols: Yeah

    34 min
4.5
out of 5
14 Ratings

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A weekly look at what's new in solar, brought to you by Exact Solar. Clean energy news, policy updates, and stories that matter. exactsolar.substack.com

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