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What does it take to turn next-generation solar technology into a bankable commercial product?
Swift Solar is closing the U.S. heterojunction and perovskite tandem solar cell gap. Dr. Gunter Erfurt, managing director at Swift Solar and former Meyer Burger CEO, joins Tim Montague and John Weaver to explain why U.S. module capacity sits near 50 gigawatts while domestic cell capacity trails at 5 gigawatts.
Following Swift Solar's acquisition of Meyer Burger's technology, intellectual property, manufacturing equipment, and engineering team, Dr. Erfurt shares how the company plans to accelerate U.S. solar manufacturing while preparing for the future of perovskite tandem solar cells. John Weaver presses Erfurt throughout on tariffs and real project pricing, drawing on his own current commercial bid.
The conversation explores why heterojunction (HJT) technology is the ideal foundation for perovskites, why bankability matters as much as efficiency, and how domestic solar manufacturing can strengthen energy security and supply chain resilience.
Whether you're a solar developer, EPC, utility professional, investor, policymaker, or clean energy enthusiast, this episode offers valuable insights into where the solar industry is heading over the next decade.
In this episode, you'll learn:
As electrification accelerates and global electricity demand climbs toward a projected tripling or quadrupling in the coming decades, the solar industry faces real pressure to build technology that is efficient, reliable, and ready to scale. This conversation with Dr. Gunter Erfurt, joined by Tim Montague and John Weaver, offers a behind-the-scenes look at what it actually takes to move breakthrough innovations from the research lab into commercial production. From heterojunction technology and perovskite tandem cells to domestic manufacturing, bankability, and long-term reliability, this episode provides valuable insight into the engineering and business decisions that will shape the next generation of solar.
Connect with Dr. Gunter Erfurt on LinkedIn.
https://www.linkedin.com/in/gunter-erfurt-55103850?originalSubdomain=de
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The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Community microgrids saved lives during a PG&E shutoff in Humboldt County. Lisa Cohn of Microgrid Knowledge has tracked every project getting built in America right now. She tells you what separates the ones that succeed from the ones that fail, and what you need to know before entering this market.
Community microgrids are among the fastest-growing segments in solar and storage, and among the hardest to finance and build. Lisa Cohn is the co-founder of Microgrid Knowledge, a publication she has run for over a decade, covering every major microgrid deployment in the United States.
In this episode, Lisa joins host Tim Montague to break down the funding models, utility partnerships, and regulatory frameworks that determine whether a community microgrid gets built or abandoned.
The conversation covers California's shift from the restrictive CMEP program to the MIP, the rise of tribal microgrids, public power's structural advantage over investor-owned utilities, and the emerging model of networked microgrids that share power across adjacent communities. If you work in solar, storage, or clean energy development, this episode gives you a clear picture of where the community microgrid market stands today and where the openings are.
Here is what you will learn from this conversation about community microgrids:
State legislation in Oregon is already moving community microgrids forward in wildfire-prone areas, and California's MIP program is enabling Clean Coalition to deploy microgrids that run 24/7 and sell grid services. At the same time, the DOE tribal funding program is producing deployments in states like Wisconsin that would not otherwise have the capital to build. The window for solar and storage professionals to get ahead of this market is open right now.
Connect with Lisa Cohn
cleanenergywriters.com
Lisa Cohn | LinkedIn
Home | Microgrid Knowledge
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Clean Power Hour
Clean Power Hour on YouTube
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Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Solar carport installation costs can swing by 12 cents per watt before a single panel goes up. Kyle Sinclair, CEO and co-founder of SDE (Sinclair Designs and Engineering), James Strizki, Project Manager and CFO of GenMounts and Renewable Energy Holdings, and Matt Boyce, a PE licensed in 27 states and Principal Engineer at Engineered Solutions, join Tim Montague to break down exactly how carport projects are won and lost. Between them, they have engineered, manufactured, reviewed, and installed hundreds of megawatts of solar structures. This webinar covers the full arc of a carport project from initial bid to commissioning, with a focus on where costs blow up and what to do before you break ground to prevent it.
Here is what you will learn in this conversation about solar carport installation and commercial carport project execution:
With residential installers entering the commercial carport market in growing numbers, the gap between what a project looks like on paper and what crews find underground is widening. Kyle Sinclair notes that some EPCs entering this space are used to low-cost, high-volume, cookie-cutter projects and are now bidding work that is the complete opposite, large, expensive, heavily customized, and months in the making. If you are pricing carport work or planning to, the cost variability covered in this conversation is not theoretical.
Connect with Guests
Kyle Sinclair | LinkedIn
James Strizki, P.E. | LinkedIn
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
CATL unveiled its TENER Sodium energy storage system at Intersolar Europe in Munich, rated for 15,000 cycles to 70 percent state of health at room temperature. CATL frames that as a 25 to 30 year service life, and it takes only 34 modules to stand up a one gigawatt-hour site. That single specification changes how commercial storage professionals price, propose, and finance battery projects. Tim Montague and John Weaver dig into what it means, alongside Illinois growing from about 80 megawatts of solar a decade ago to over 6,000 megawatts today under the new CRGA law, SunBallast ballasted racking and what module stacking tells you about install labor, UK bids for 16 and 18 hour long-duration storage, perovskite modules reaching the residential market, El Niño shifting solar output across the US, and silver falling more than 50 percent from its 2026 peak.
Episode Highlights
This episode is essential for commercial solar installers, battery storage developers, community solar professionals, and clean energy policy watchers. The sodium ion story has direct and immediate implications for how professionals structure storage proposals, financial models, and customer conversations. Illinois developers will also want Tim's firsthand account of the CRGA storage procurement and the residential VPP pilot going live this summer.
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
A single design error on a commercial solar project can cost $60,000 to $70,000 to fix. Scott Wyssling and Catherine Kelso of Wyssling Consulting explain what quality design actually looks like, why AI cannot replace a licensed engineer reviewing plans, and how battery integration really fits into commercial solar today.
In this episode, Tim Montague sits down with Scott Wyssling, founder and principal at Wyssling Consulting, and Catherine Kelso, Director of Commercial Design and electrical engineer at the firm. Wyssling provides structural and electrical engineering and design for residential and commercial solar and storage projects across the United States. With 75 employees and an engineer-owned, engineer-led structure, the firm has built its reputation on quality control, fast turnaround, and a refusal to treat the PE seal as a formality.
With the ITC safe harbor deadline pushing a construction boom through 2027, the pressure to move fast is real. Scott's point is direct: speed without engineering integrity creates liability that lands on the EPC and installer, not just the firm that signed the plans.
What you'll learn in this conversation:
Why a single design error on a commercial project can cost $60,000 to $70,000 to fix, and how $3,000 to $4,000 in better upfront engineering eliminates that risk entirely.
How Wyssling's QAQC process actually works, including internal peer reviews and a 20% audit of already-delivered projects, and why that sets a different standard than automated or outsourced design.
Why Catherine Kelso says battery integration is simpler than most EPCs expect, whether you're retrofitting storage onto an existing system or designing it in from day one, and what to watch for when choosing a manufacturer.
Scott Wyssling's direct case against letting AI replace hands-on engineering review, and why a licensed PE needs eyes on the actual roof, the actual photos, and the actual electrical equipment.
How 15 to 20 year old solar farms are creating a new engineering challenge as 600-volt inverters age out in a market now built around 1,000 and 1,500-volt equipment, and why this only grows from here.
Quality control gets treated as optional right up until a six-figure correction lands on your desk. This episode gives you concrete criteria for telling a serious engineering partner from a shortcut operation before you sign anything.
Connect with Guests
Website: https://www.wysslingconsulting.com/
Scott LinkedIn: https://www.linkedin.com/in/scott-wyssling-5b2aa77/
Catherine LinkedIn: https://www.linkedin.com/in/catherine-kelso-pe-997b014a/
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Battery energy storage fire safety is one of the most urgent permitting challenges facing solar and storage developers in 2026. Mike Nicholas, Energy Storage Specialist and Fire Consultant at Hiller Companies, brings a rare perspective: he built Kern County's entire BESS permitting program from scratch in 2019, when no national standards existed, and now travels the country helping developers, EPCs, and fire departments get these projects to yes.
Kern County has the highest concentration of renewable energy and battery storage in California, including the largest active battery storage project in the world at roughly 3.2 GWh. Mike developed a 32-page submission guideline that standardized the permitting process and became a model other jurisdictions are now replicating. After retiring as a fire captain and assistant fire marshal in 2024, he joined Hiller, which represented about 85% of the battery storage clients that went through Kern County permitting. He now works with the Governor's Office of Business and Economic Development and American Clean Power to build reference documents and videos for fire safety standardization.
Here is what you will learn in this conversation about battery energy storage fire safety:
With BESS developers racing to lock in safe harbor and stay ahead of tightening FEOC and material-assistance thresholds, permitting delays and moratoria are a real threat to project timelines. Mike describes a shift already happening in California: under General Order 167-C, the California Public Utilities Commission now requires ESS operators to file emergency response plans and produce annual testing and maintenance reports, and Kern County has introduced an annual operational permit tied to emergency contact updates. These requirements are likely to spread nationally.
Connect with Mike Nicholas
Hiller Companies: https://hillerfire.com/
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
A US federal court just ruled the IRS acted in an "arbitrary and capricious" manner on solar and wind safe harbor rules, shaking up project timelines for developers racing toward the July 4, 2026 deadline.
Meanwhile, at the Shanghai Solar Show (SNEC), energy storage claimed more floor space than solar panels for the first time, signaling a major shift in where the industry is placing its bets.
Tim and John dig into safe harbor court rulings, vertical integration in US module manufacturing, battery technology milestones, and agrivoltaics at the Vatican. Viewers get first-hand reporting from the Shanghai Solar Show floor alongside detailed discussion of what these stories mean for developers, installers, and investors.
EPISODE HIGHLIGHTS
This episode is built for solar developers, commercial installers, battery storage professionals, and clean energy investors tracking policy and technology in 2026. The safe harbor ruling alone could affect capital decisions on projects above 1.5 MW AC before the July 3 deadline. Between the Shanghai show floor, the QCells factory update, and Australia's 8-hour battery milestone, this episode covers the week's most consequential moves in clean energy.
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Solar & storage pioneers Solar Design Associates share 50 years of firsts on the Clean Power Hour. They put solar on the White House in 1979 and built the first community solar garden in America. Haskell Werlin and Steven Strong trace solar's fall from $16 to $1 per watt, explain why the battery cost curve is following the same path, and break down what the ITC-free era means for developers.
Solar and storage pioneers Solar Design Associates have been designing solar energy systems since 1974, accumulating firsts from the Carter-era White House installation to the first true community solar garden in the United States. Haskell Werlin, Vice President of Business Development, and Steven Strong, Founder and President, join Tim Montague on the Clean Power Hour to trace 50 years of solar industry evolution.
Solar pricing fell from $16 per watt for satellites to $1 per watt for ground mounts today, and Haskell confirms the battery cost curve is now following the same downward path, with Texas leading the country in solar and battery installations. This episode covers landmark projects, including the Bullit Center in Seattle and the Harvard community solar garden, alongside a direct assessment of what the residential ITC removal means for project economics through 2028 and beyond.
Here is what you will learn from this conversation about 50 years of solar storage pioneers and the battery transition ahead:
Fifty years ago solar panels powered satellites because nothing else could reach them, and the technology now costs $1 per watt for ground mounts, a cost collapse driven by German feed-in tariffs, and Chinese manufacturing scale. The battery industry is now following the same path solar took from satellite technology to mass market infrastructure, with the same forces of policy, manufacturing scale, and early adopter projects already in motion. Professionals watching this episode are standing at the same inflection point the solar pioneers of 1974 stood at, with the advantage of knowing exactly how this story ends.
Connect Steven Strong, Haskell Werlin
Haskell Werlin: https://www.linkedin.com/in/haskell-werlin-1a21383/
Steven Strong: https://www.linkedin.com/in/steven-strong-3309894/
Solar Design Associates: https://solardesign.com/
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Community microgrids and virtual power plants are two of the most misunderstood concepts in clean energy, and the gap between them is where billions of dollars in grid value are being left on the table. Craig Lewis, Founder and CEO of the Clean Coalition, returns to The Clean Power Hour to break down how community-scale microgrids and VPPs actually work, where the money is, and why the current policy window in California matters to every energy professional in the country.
California's Microgrid Incentive Program funds up to $18 million per community microgrid project, covering 100% of upfront costs for front-of-meter solar and storage, grid upgrades, and interconnection. Craig explains the Clean Coalition's methodology for sizing solar and storage, calculating the minimum state of charge required for resilience, and building a value stack through wholesale markets, bilateral agreements with load-serving entities, and PURPA qualified facility status.
Here is what you will learn in this conversation about community microgrids and virtual power plants:
You will learn the difference between reliability and resilience, and why designing for resilience automatically gives you reliability, but not the other way around.
Find out how California's Microgrid Incentive Program works, what the $18 million funding breakdown covers, and why the program is competitive enough that most applicants need deep grid analysis expertise to win.
Understand the three ways to build a value stack for front-of-meter solar and storage assets: wholesale markets through CAISO, bilateral agreements with load-serving entities, and PURPA qualified facility status.
You will hear why transmission costs, not energy prices, are the fastest-growing component of electricity bills in California, and how distributed energy resources close to load are the only structural fix.
Learn how the Clean Coalition's VOR123 methodology tiers loads and facilities into critical, priority, and discretionary categories, and why tier-one facilities like hospitals and fire stations should be funded through public dollars.
California's Microgrid Incentive Program is active and awarding projects now, with roughly 30 community microgrids expected to be funded as proof-of-concept demonstrations. At the same time, transmission costs continue rising with no policy mechanism anywhere in the US that compensates for provisioning energy resilience. For solar and storage professionals and clean energy investors, the window to build expertise in community microgrid development and front-of-meter value stacks is open today.
Connect with Craig Lewis
LinkedIn: https://www.linkedin.com/in/craig-lewis-81b0521/
Website: https://clean-coalition.org/
Support the show
Connect with Tim
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Clean Power Hour on YouTube
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Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
Energy resilience for homeowners is the mission behind Energy Access Innovations, a multi-brand clean energy company building an end-to-end ecosystem for solar and battery storage. Nicole Tomasin, Chief Commercial Officer at EAI, joins Tim Montague to explain how the company serves the consumers the rest of the industry ignores, including DIYers and rural markets.
Battery storage and solar access for homeowners is moving beyond coastal markets and high-income consumers. Energy Access Innovations has built a multi-brand portfolio covering distribution, DIY support, installation, and financing under one mission: making energy resilience affordable for every American. Nicole walks Tim through how the company's sister brands, including EG4, Signature Solar, Outback Power, Solar 76, Sun Atlas Power, and EA365, work together to serve customers that most distributors and installers turn away.
The company's new XR60 battery, 60 kWh with a 16 kW inverter for under $20,000, and its EA365 prepaid lease, which returns a 30% rebate directly to homeowners, are proof that affordability and transparency are not competing goals.
Here is what you will learn in this conversation about residential battery storage affordability and energy resilience:
The residential ITC phase-out is compressing margins across the solar industry and pushing more customers toward third-party ownership models. Illinois is incentivizing 1.8 gigawatts of distributed batteries through its clean energy incentive program, and Texas has already surpassed California in storage deployment. Contractors who are not yet offering storage are running out of time to get positioned.
Connect with Nicole Tomasin, Energy Access Innovations
Nicole Tomasi: https://www.linkedin.com/in/nicole-santos-tomasin/
Sun Atlas Power: https://www.sunatlaspower.com/
Episode 325, James Showalter: https://youtu.be/7CoJQ_lTLkU
Support the show
Connect with Tim
Clean Power Hour
Clean Power Hour on YouTube
Tim on Twitter
Tim on LinkedIn
Email [email protected]
Review Clean Power Hour on Apple Podcasts
The Clean Power Hour is produced by the Clean Power Consulting Group and created by Tim Montague. Contact us by email: [email protected]
Corporate sponsors who share our mission to speed the energy transition are invited to check out https://www.cleanpowerhour.com/support/
The Clean Power Hour is brought to you by CPS America, maker of North America’s number one 3-phase string inverter, with over 6GW shipped in the US. With a focus on commercial and utility-scale solar and energy storage, the company partners with customers to provide unparalleled performance and service. The CPS America product lineup includes 3-phase string inverters from 25kW to 275kW, exceptional data communication and controls, and energy storage solutions designed for seamless integration with CPS America systems. Learn more at www.chintpowersystems.com
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