Field Frequency

Jason Cortes

Field Frequency sits at the intersection of energy and technology, where innovation powers possibility. Each episode brings you a steady stream of insights, real-world stories, and timely updates straight from the field. From breakthrough advancements and evolving infrastructure to expert perspectives on emerging tech, we uncover the tools, trends, and talent shaping the future of EV, fueling, and the technology that surrounds both industries. Whether you’re deep in the industry or simply curious about where energy meets innovation, Field Frequency keeps you connected, informed, and inspired — fueling the future, one conversation at a time.

  1. 2d ago

    EV Wire | Electric Trucks, Robotaxis, and the Business Between

    Send us Fan Mail The companies that built charging for electric trucks are now building depots for robotaxis. They already know how to bring power to a site and design around a fleet. So what does today's infrastructure work open up tomorrow? Jason Cortes sits down with Jaan Juurikas, founder of EVwire, the EV news and data platform that grew out of his EV Universe newsletter. Jaan started out driving a Nissan Leaf taxi through Estonian winters and worked his way up to CEO of that electric taxi company. Today he tracks the EV industry across global markets, with a focus on charging, Class 8 electric trucks, and robotaxis. The conversation covers a lot of ground, and Jaan brings the numbers. China passed 45% battery-electric sales in September. Markets like Uruguay are skipping the early-adopter phase entirely on the back of affordable Chinese EVs. Europe is at 30%, Denmark is above 80%, and the US sits around 6%. On trucks, nearly every battery-electric heavy truck built last year came out of China, and Chinese truck makers are now going head-to-head with the incumbents in Europe. Then Jaan shares what EVwire has mapped on Tesla's Supercharger for Business program: 36 operators, 67 open sites, and 388 stalls in the US, with roughly 246 more sites in development. Whole new CPOs are being built on the program, competing on amenities, financing, and even the design of the charger itself. On robotaxis, the world is now passing a million paid rides a week. Waymo leads, Tesla is ramping driverless service in Texas, and Zoox can now charge fares. The US trails much of the world on EV adoption but leads on autonomy. Jaan closes on the big convergence: heavy-duty charging, robotaxi depots, data centers, eVTOLs, and autonomous charging are turning into one energy play. In this conversation: From electric taxi driver to taxi company CEO in EstoniaHow a personal newsletter became EVwireChina at 45% battery-electric, and how "rest of world" markets are leapfroggingWhy Europe's fast charging is now cheaper per kilometer than petrol in most marketsMandate or choice? What's really driving EV adoption in ChinaThe e-truck transition: China, Europe, the US, and the Tesla SemiChinese truck makers arrive in EuropeSupercharger for Business by the numbers, and the CPOs built on itCharging is becoming a commodity. The experience around it isn't.A million robotaxi rides a week: Waymo, Tesla, Zoox, and what comes nextWhy heavy-duty charging players are pivoting to AV depotsEnergy, AI, and robotics converging into one infrastructure play The vehicles get the headlines. The power, the depots, and the service behind them are where the next businesses are being built.

    EV Wire | Electric Trucks, Robotaxis, and the Business Between
  2. Oct 28

    EVSTAR Part 2: What It Actually Takes to Restore Uptime

    Send us Fan Mail Transferring the financial risk doesn’t fix the charger. Someone still has to diagnose the failure, find the right parts, coordinate with the site, and get a qualified technician there to complete the repair. In Season 2, Episode 4 of Field Frequency, Jason Cortes welcomes Holly Audiss, VP of Client Success at EVSTAR, for the second half of our EVSTAR conversation. Following part one’s discussion of risk, finance, and procurement with Hubert Kim, this episode turns to the operational work behind warranty execution. Holly breaks down how claims move from intake to repair, where incomplete information and parts shortages can create delays, and why a labor warranty may still leave an operator with travel-related expenses. She also explains how EVSTAR works with field service partners like Field Advantage and how preventative maintenance can be incorporated into tailored partner arrangements. For operators, site hosts, and procurement teams, the takeaway is practical: understand who owns every step of the repair process before equipment goes down. What happens after a charger fails? The charger is covered. The claim is filed. But getting the asset back online still takes people, parts, troubleshooting, and coordination. In part two of our EVSTAR series, host Jason Cortes sits down with Holly Audiss, VP of Client Success at EVSTAR, to discuss what it takes to turn warranty coverage into service in the field. From incomplete diagnostic information to parts backlogs and unexpected technician travel costs, the conversation explores the friction that can sit between a warranty promise and a completed repair. Holly shares how EVSTAR approaches claims coordination, why strong OEM and service relationships matter, and what buyers should understand before releasing an RFP or choosing their next charger. In this episode • Troubleshooting before the truck roll: Why identifying the failure and the correct parts helps avoid repeat visits. • The work behind a claim: How claims specialists coordinate with OEMs, parts resources, site hosts, and service providers. • Where repairs get delayed: Incomplete information, missing error logs, and parts backlogs. • The real cost of an SLA: Why buyers need to ask whether travel, hotels, and other mobilization expenses are included. • Coverage and exclusions: Holly discusses the importance of clear terms and gives examples involving vandalism and installation-related problems. • Preventative maintenance through partnerships: How EVSTAR and Field Advantage have worked on tailored proposals that combine warranty coverage and maintenance services. • A shared responsibility for reliability: Why OEMs, warranty administrators, software providers, and field service teams need strong working relationships. Questions before procurement: Who diagnoses, coordinates, sources parts, performs the repair, and pays at every stage?   The questions to take into your next procurement conversation 1) Who owns the repair process from the initial failure through return to service? 2) What diagnostic information is needed, and who provides it? 3) Where will replacement parts come from? 4) What does the service commitment measure: response, arrival, or completed repair? 5) Are travel, lodging, and other technician expenses included? 6) What remains the operator’s responsibility during and after the OEM warranty? 7) Can preventative maintenance be arranged alongside coverage? Questions are editorial takeaways from the discussion, rather than verbatim guest quotations. Continue the conversation Part one features Hubert Kim of EVSTAR on financial risk, procurement, and warranty strategy. Part two explores the people and processes required to put that strategy into action. Field Frequency is powered by Field Advantage. Listen at https://fieldfrequency.com.

  3. Oct 21

    EVSTAR Part 1: Who Carries the Risk When Chargers Fail?

    Send us Fan Mail EV chargers fail. That part isn't up for debate. The real question is who pays when they do, and most of the industry still isn't answering it when the deal is being made. In Part 1 of a two-part series, Jason Cortes sits down with Hubert Kim, Vice President of Business Development at EVSTAR, a provider of insurance-backed extended warranty programs for EV charging infrastructure. Hubert spent nearly a decade at Asurion underwriting warranties on consumer electronics, then led sales at SK Signet. There he watched one charger on the New York State Thruway go up and down for six months: remote diagnostics, four or five truck rolls, a firmware engineer flown in from Korea, and more than $20,000 spent before it was fixed. That charger shaped EVSTAR's thesis. Plenty of companies can put a technician in front of a broken charger. What the market is missing is someone to underwrite the cost of the fix. As utilization climbs, power modules cycle harder, failures rise, and the cost of keeping a site online gets harder to forecast. OEM warranties typically cover parts for two years but not the labor, the travel, or the triage that happens before anyone rolls a truck. And when a manufacturer exits the market, its warranty can go with it. Hubert's argument: warranty belongs in the procurement and financing conversation, not after the hardware is already in the ground. In this conversation: • The $20,000 charger, and what one bad unit taught Hubert about life cycle cost • Applying the consumer extended-warranty model to $20K–$100K+ charging assets • Deployment-first to utilization-first, and why higher utilization means more failures • NEVI's 97% uptime requirement and what it asks of operators • Why warranty is a finance and risk management question, not just a CapEx line item • A $3,000 cross-country trip for a two-hour fix: the labor gap in OEM warranties • OEM self-insurance, and why it gets harder to sustain at scale • What happens to your warranty when a manufacturer leaves the market • Who fixes vs. who pays: how field service partners fit into an underwritten warranty • Financing, funding, and proof: the three forces pushing warranty into procurement • Revenue reimbursement when service SLAs aren't met • Two questions to answer before the RFP: what's covered, and who's backing it • Accidental damage vs. vandalism: where coverage starts and stops • Why self-insuring is rarely as cheap as buyers expect Buying the charger is one decision. Deciding who carries its life cycle risk is another. Part 2 moves from strategy to execution: what it takes for coverage to actually convert to uptime.

  4. Oct 14

    Andrew Lambrecht | What the EV Market Is Actually Telling Us

    Send us Fan Mail The headlines say the EV market is in trouble: the tax credit is gone, quarterly sales dipped, and range anxiety still won’t die. The market itself is saying something different. Used EV values are climbing, the Tesla Model Y is still selling without a credit at the same price, and some EVs are holding their value better than almost anything else on the road. In this episode of Field Frequency, Jason Cortes sits down with Andrew Lambrecht, who has seen this industry from nearly every angle. He started with a high school EV blog, went on to write for Business Insider, InsideEVs, and Forbes Wheels, interned on Lucid Motors’ charging validation team while earning his industrial engineering degree, and now works at EverCars, an EV-only used car retailer in California. Andrew’s read is that the signals worth following aren’t the quarterly headlines. They’re resale values, buyer behavior, and how people actually live with their cars. A desirable EV like a Model Y or a Rivian barely depreciates. A used 2022 R1T that sold for about $75K new now goes for the mid-50s. Meanwhile, new EV prices are falling while gas car prices keep rising. Most drivers also need far less range than they think, and the biggest problem in public charging today isn’t hardware. It’s education. In this conversation: • Why EV sales held up after the federal tax credit went away • Used EV values are climbing, and what that says about demand • Which EVs hold their value (Model Y, Rivian R1S/R1T) and which don’t • New EV prices are falling while gas car prices keep rising • The ownership features that matter more than spec-sheet range • Why most drivers overestimate how much range they need • The best used EVs under $25K • Charging infrastructure is “good enough.” The real gap is driver education. • Charging etiquette: stall hogging, and why 80% often beats 100% • Charging curves explained with a movie theater, and preconditioning with warm honey • Toyota’s EV turnaround, and why hydrogen isn’t taking off • Where EV adoption is headed in the next five to six years Andrew’s bottom line: as long as there are good EVs on the market, the market is going to be all right.

  5. Oct 7

    The Easy Problems Are Solved. The Future Is Energy Orchestration.

    Send us Fan Mail About 70% of what goes wrong at an EV charging site can now be fixed with a remote reset. Michael Greenberg of Voltra says that means the easy problems are solved, and what's left is harder: thin electricity margins, multi-vendor sites, grid limits, and physical hardware that still breaks. Michael spent 25 years in enterprise software before moving into EV charging. He joins host Jason Cortes to explain why the market is getting "less sexy" as growth shifts to depots, municipal fleets, multifamily, and workplace charging, and why operators are now fighting for every basis point of cost. They cover how AI agents are changing the way operators monitor and run sites, and why that makes field service a bigger share of the budget, not a smaller one. Michael also makes the case that batteries and dynamic load management will be standard on nearly every new site, that load control is moving from the cloud to on-site controllers, and that flexible interconnects are how operators will get power from utilities that can't supply everything they ask for. In this episode: Why Voltra moved from charger management software to an infrastructure layer for whole energy sitesThe four problems every energy site has to solve at once: connectivity, configuration, monitoring, and maintenanceWhat Europe's operators already learned about making a site pencil out without subsidiesWhere AI helps operations today, and where it stopsWhy truck rolls aren't going awayWhen battery economics work: charge and discharge every dayCanada's push for local load control and what it signals for the USFlexible interconnects and the utility's view of EV charging

  6. Sep 29

    Stop Investing in Chargers. Start Investing in Systems

    Send us Fan Mail Most EV charging failures don't start when the charger goes down. They start in planning and procurement, long before ground is broken. In this roundtable episode, host Jason Cortes sits down with Grayson Eady (Founder & CEO, eVision Solutions) and Laolu Adeola (Managing Director, Leke Services). Grayson is a former Rivian charging interoperability engineer. Laolu is a fleet electrification veteran who has helped raise more than $2B for EV startups. Together, they break down why cheap infrastructure turns into expensive infrastructure, and what buyers should require before they ever issue an RFP. They cover: Why charging is a "system of systems": hardware, OCPP, charging management software, firmware, cybersecurity, data, and O&MTreating charging like a vehicle purchase, with total cost of ownership instead of the lowest install costA real case where a charger was down 60+ days while every dashboard said "available," and why hardware data logs sat behind a paywallThe "crossed-arm salute": what happens when nobody owns the problemWhy uptime is only the baseline, and why first-time plug-in success and mean time to repair are what separate strong operators from the restBuy Better, their workshop that helps fleets, municipalities, and CPOs build RFPs that screen out bad vendors from day oneWhy the industry needs airline-style data sharing, and why charging should compete on price and amenities, not on whether it worksGuests: Grayson Eady, Founder & CEO, eVision Solutions | Laolu Adeola, Managing Director, Leke Services Host: Jason Cortes Learn more about Buy Better at buybettercharging.com. Field Frequency is powered by Field Advantage, a company that specializes in maintaining EV charger infrastructure. Produced and edited by Autozy (autozy.co). Follow Field Frequency so you don't miss an episode.

  7. Sep 22

    The EV Charging Reliability Problem Nobody Owns

    Send us Fan Mail Reliable EV charging depends on more than functioning hardware. It requires coordination among charge point operators, software providers, equipment manufacturers, site hosts, service organizations, and the technicians working directly on the equipment. In Episode 43 of Field Frequency, host Jason Cortes welcomes Hilary Taylor, co-founder and CEO of WattsUp, for a conversation about the EV charging reliability problem—and the gaps in ownership, information, and accountability that may allow it to persist. Hilary shares how her electrical engineering career took her from wireless EV charging to mobile and megawatt-level charging systems. She also recounts the difficult road trip that helped her recognize the scale of the industry’s reliability challenge and ultimately contributed to the creation of WattsUp. Jason and Hilary examine how hardware, software, environmental conditions, and disconnected service workflows can compound charger failures. Hilary explains how WattsUp seeks to connect the industry’s fragmented systems by combining machine learning, contextual data, prescriptive operational workflows, and structured feedback from field technicians. The discussion also explores why technicians need context in addition to instructions, how environmental and utility data may prevent unnecessary truck rolls, and how predictive insights could support stronger service-level agreements and more consistent uptime. Topics discussed include: Hilary’s journey from electrical engineering to EV chargingThe experience that inspired the creation of WattsUpWhy EV charging reliability is a compounding problemAccountability gaps across the charging ecosystemThe importance of standardized operational workflowsGiving field technicians context—not only instructionsUsing service history to improve on-site decision-makingThe limitations of predictive data without prescribed actionIncorporating weather, utility, and environmental conditionsTurning technician feedback into structured dataStandardization challenges surrounding OCPPPredictive maintenance as a tool for managing SLA riskThe relationship between technician productivity and charger uptimeBuilding greater driver confidence in public charging

Ratings & Reviews

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About

Field Frequency sits at the intersection of energy and technology, where innovation powers possibility. Each episode brings you a steady stream of insights, real-world stories, and timely updates straight from the field. From breakthrough advancements and evolving infrastructure to expert perspectives on emerging tech, we uncover the tools, trends, and talent shaping the future of EV, fueling, and the technology that surrounds both industries. Whether you’re deep in the industry or simply curious about where energy meets innovation, Field Frequency keeps you connected, informed, and inspired — fueling the future, one conversation at a time.