Solar modules once cost $8 per watt. Geoff Greenfield bought his first panels from a classified ad in Home Power magazine. Twenty-six years later, he leads an EPC division building 67 MW projects and negotiating 100 MW contracts.

In this episode of The Clean Power Hour, host Tim Montague sits down with Greenfield to trace the full arc of the U.S. solar industry, from off-grid battery systems with lead-acid batteries to utility-scale construction backed by a multi-billion-dollar general contractor. They cover NABCEP's role in professional standards, why U.S. residential solar costs two to three times more than in Australia or Germany, and why the industry needs to prepare for a future without tax credits.

EPISODE HIGHLIGHTS

• Starting a solar company in 2000 meant buying used 53-watt panels from classified ads at $6 per watt. Greenfield traces how the economics shifted from pure environmental motivation to grid parity and beyond.
• NABCEP credentials go beyond technical competence. Organizations have lost certification over ethical violations, and state attorneys general are now pursuing solar bad actors.
• Panel efficiency is approaching physical limits, but economic efficiency still has room.
• In PJM territory, commercial battery storage pays for itself through peaking value and ancillary services, sometimes faster than solar alone. Resilience sells in residential, but the commercial case depends on grid services math.
• The solar tax credit is likely not returning. Companies preparing for 2028 and beyond are cutting soft costs, joining procurement cooperatives like Amicus Solar, and building business models that work without incentives.

This conversation provides a 26-year field perspective on what it took to grow from a one-person off-grid installer to a utility-scale EPC, and what comes next for companies facing the same transition.

Connect with Geoff Greenfield, Kokosing

Geoff LinkedIn: https://www.linkedin.com/in/geoff-greenfield-595a406/

Kokosing Website: https://kokosingsolar.com/

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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: CleanPowerHour@gmail.com

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 10-person, three-month estimating process. Compressed into 12 hours by a single AI agent. That is what Jesse Anglen, co-founder of Ruh AI, is building for construction and solar companies right now. In this episode of The Clean Power Hour, host Tim Montague sits down with Anglen to break down what a digital workforce actually looks like in practice, how solar contractors and EPCs can start using agentic AI today, and what it means when AI agents take over knowledge work at scale.

Episode Highlights

• Anglen breaks down the three categories of AI agents and explains why most of what people call "agents" today are not actually agents at all.
• One construction firm with projects in the hundreds of millions of dollars had a core operational process that took 10 people three months to complete. Ruh AI turned that same process into an overnight task.
• Solar contractors are sitting on a lead generation opportunity that most have never considered. AI agents make it possible to act on it at scale, at almost no cost.
• The administrative burden of running a billion-dollar construction or solar company is staggering. Anglen explains exactly which back-office functions AI agents are already handling, and what that means for headcount.
• Anglen gives a clear breakdown of what it actually costs to build and run a custom AI agent, from the entry-level option any business owner can start today to the complex systems designed to replace entire departments.
• Anglen shares a number that reframes the entire AI conversation. It is not about chatbots or writing emails. It is about the total size of the knowledge economy and how much of it AI is already capable of doing without a human in the loop.

Solar and EPC companies are already operating under margin pressure, competing on thin spreads while administrative overhead continues to grow. The tools Jesse Anglen describes are available today, at a price point that is lower than hiring a single full-time employee. The window to adopt these systems before competitors do is narrowing fast.

Connect with Jesse Anglen

Linked: https://www.linkedin.com/in/jesseanglen/

Website: https://www.ruh.ai/

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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: CleanPowerHour@gmail.com

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

US battery manufacturing capacity is set to hit 145 gigawatt hours by the end of 2026, enough to cover 100% of domestic grid storage demand. Tim Montague and John Weaver break down this milestone and seven more stories on this Clean Power Hour Live.

This live episode covers battery manufacturing economics, solar panel technology shifts, offshore wind project costs, global installation records, grid stability regulation, and DIY plug-in solar.

EPISODE HIGHLIGHTS

• US grid battery manufacturing capacity is expected to double from 70 to 145 gigawatt hours by the end of 2026. (Canary Media)
• Tesla officials visited Chinese equipment makers, including Maxwell Technologies, to source up to 100 gigawatts of solar manufacturing equipment. (Reuters)
• India deployed 49 gigawatts of solar in 2025, surpassing the US at 45 gigawatts for the first time. (PV Tech)
• The Coastal Virginia Offshore Wind facility, an $11.5 billion project, delivered its first power to the grid. (Riviera)
• GCL OptoElectronics secured China's first commercial perovskite silicon tandem PV module order at 1.2 megawatts. (PV Magazine)
• Fraunhofer researchers found that certain solar panel cleaning agents damage anti-reflective coatings and reduce module performance by up to 5%. (PV Magazine)

Battery manufacturing economics, tariff math, and grid regulation changes are moving faster than most project timelines. If you develop, finance, or install clean energy systems, the numbers in this episode affect your next bid.

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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: CleanPowerHour@gmail.com

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

Billion-dollar weather emergencies hit the United States every 19 days. In the 1980s, they came every 90 days. The grid is still running, but communities are paying the price when it fails. Elisa Wood, founder of Energy Changemakers and host of the Energy Changemakers podcast, joins Tim Montague on The Clean Power Hour to explain why community microgrids are the missing layer in grid resilience, where they are actually working, and what is stopping most communities from building them.

In this Episode:

• You will learn exactly how a community microgrid differs from standard solar and storage, specifically the islanding capability that keeps critical services running when the main grid fails.
• You will understand why the "over the fence" rule blocks most community microgrid projects and how California is beginning to create exceptions that other states could follow.
• You will learn why resilience has no assigned dollar value in today's grid market, and why that missing valuation is the root cause of the community microgrid funding problem.
• You will hear which states are leading on community microgrid development right now and why federal funding cuts have made state and local action the only real path forward.
• You will learn why utilities have a structural reason to resist community microgrids and what financial incentive changes could shift that dynamic.
• You will take away a community engagement lesson from Cascadia Renewables in Washington State, showing that talking to residents before doing engineering studies is what determines whether a project wins local support or stalls.

With federal support retreating and extreme weather intensifying, the window for state-level action on community microgrids is narrow. The case studies in this episode show that community microgrids save lives, reduce economic losses from outages, and create local energy wealth. Clean energy professionals who want to move these projects forward need to understand the regulatory barriers, the funding gaps, and the community engagement strategies that separate successful projects from stalled ones.

Connect with Elisa Wood

LinkedIn: https://www.linkedin.com/in/elisawood/

Website: https://energychangemakers.com/

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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: CleanPowerHour@gmail.com

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

Revenue from aging solar assets can now more than double through redevelopment. Matt Murphy, CEO of Flux Energy, joins Tim Montague on the Clean Power Hour to explain how. Murphy, a 20-year solar industry veteran and former Greenbacker executive, launched Flux Energy to focus on repowering and redeveloping existing solar farms, adding energy storage, renegotiating contracts, and replacing outdated panels with modern technology. His claim: deploying capital into operating assets delivers returns as good or better than building new projects from scratch.

With SREC 1 and SREC 2 programs expiring in Massachusetts and solar panels from the early 2010s producing a fraction of what today's 750-watt modules deliver, the opportunity for solar asset redevelopment is growing fast.

Here's what you'll learn in this conversation about repowering and redeveloping aging solar assets:

• Learn how Murphy's "redevelopment" strategy stacks new revenue streams on existing solar farms by adding battery storage, repowering with modern panels, and renegotiating offtake agreements.
• Understand the scale of the efficiency gap: panels installed a decade ago were 120-watt modules, while today's range from 600 to 800 watts. A repowered site on the same acreage produces up to four or five times the energy output.
• Find out why Flux Energy prefers DC-coupled battery storage.
• You'll hear how Murphy restores EBITDA to peak incentive levels, then connects sellers with IPP buyers in what he calls "solar house flipping."
• Learn why about 50% of the decommissioned panels Flux has evaluated so far have secondary market value at a few cents per watt.

As the ITC phases down and a rush to complete new projects dominates industry attention, a parallel opportunity is emerging in the existing fleet. With state incentive programs expiring and aging assets underperforming, companies like Flux Energy represent a new segment of the solar industry focused on extracting maximum value from what has already been built.

Connect with Matt Murphy, Flux Energy

Matt’s LinkedIn: https://www.linkedin.com/in/matthew-murphy-b900877a/

Flux Energy Website: https://www.fluxenergy.com/

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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: CleanPowerHour@gmail.com

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

LG Energy Solution and GM are converting their Tennessee EV battery plant to LFP production for the US grid storage market. The $70 million retooling signals a broader industry shift as EV demand in the US slows and grid storage demand accelerates. Tim Montague and John Weaver break down what this means for battery pricing, domestic manufacturing, and project developers on this week's Clean Power Hour Live.

They also cover the natural gas supply disruption that sent European energy prices up 27%, balcony solar legislation advancing in 24 states, and the debut of robotic solar construction from Terabase Energy.

Episode Highlights:

• Iran attacked a major gas facility in Qatar that produces roughly 17% of Qatar's output. John Weaver estimates this takes 3.5% of the global natural gas supply offline for at least a year. (Source)
• Illinois is among 24 states advancing balcony solar legislation. A Canary Media story reports that a balcony system at $3 per watt costs about $2,000 and saves consumers $400 per year. (Canary Media)
• LG Energy Solution and GM are converting their Ultium Cells joint venture in Tennessee from EV battery production to LFP batteries for the US grid storage market. (PV Magazine Energy Storage)
• Terabase, the automated solar construction platform, is ready for full market debut. The company assembles module tables on torque tubes in a covered structure, then uses robotic vehicles to transport them to field positions. (Solar Power World) Tim has interviewed Terabase CEO Matt Campbell on the Clean Power Hour (Episode 165)
• Global battery storage deployment hit 17 gigawatt hours in February 2026, a 60% increase over February 2025. (Energy Storage News)

Support the show

Connect with Tim

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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: CleanPowerHour@gmail.com

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

FEOC compliance is the number one question solar buyers ask in 2026, and the answer determines which module manufacturers survive. In this episode, Tim Montague talks with Chris Lettman of Imperial Star, Benoy Thanjan of Reneu Energy, and the host of the Solar Maverick podcast, and Dean Solon of Create Energy at InterSolar San Diego 2026.

Here's what you'll learn in this conversation:

• Find out how Imperial Star offers "domestic light" module configurations that let developers hit their required domestic content percentage without overpaying for content they don't need.
• Learn why some module manufacturers will disappear this year as FEOC compliance separates companies with verified supply chains from those without.
• Understand what the ITC phase-out by 2028 means for project economics and why Dean Solon says the industry needs to "break free of that pacifier."
• You'll hear why Dean Solon built Create as an open-architecture system where project owners control their own data without recurring software fees.
• Learn how battery storage is expanding beyond California and Texas into Illinois, New York, Massachusetts, and New Jersey. Benoy Thanjan notes that residential customers in Florida are now buying storage for peace of mind during blackouts, not purely for economic payback.

The FEOC compliance deadline that took effect in January 2026 is reshaping the entire solar supply chain. With the ITC phasing out by 2028 and battery storage markets expanding into new states every year, solar professionals need to understand their module sourcing options, domestic content configurations, and post-incentive business models right now.

Connect with the Guest

Chris Lettman: https://www.linkedin.com/in/chrislettman/

Benoy Thanjan: https://www.linkedin.com/in/bthanjan/

Deon Solon: https://www.linkedin.com/in/dean-solon-b8876649/

Imperial Star: https://www.imperialstar.com/

Reneu Energy: https://www.reneuenergy.com/

Create Energy: https://www.create.energy/

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Connect with Tim

Clean Power Hour
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Email tim@cleanpowerhour.com

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: CleanPowerHour@gmail.com

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

Natural gas prices in Europe surged roughly 80% after the Iran war disrupted shipping through the Strait of Hormuz, cutting off 20% of the world's oil supply. On this episode of The Clean Power Hour Live, Tim Montague and John Weaver break down how this energy war affects electricity costs, solar economics, and your business as a clean energy professional. They cover solar's fastest growth in a decade, the new SEIA market report, Virginia's clean energy moves, deep geothermal technology, and a perovskite milestone that signals large-scale manufacturing.

Episode Highlights:

The Iran war has disrupted oil and gas shipments through the Strait of Hormuz. Tim and John discuss how this "energy war" raises electricity costs, increases shipping expenses for solar equipment, and changes forward price curves for commercial solar proposals. (Clean Air Task Force)

John reports in PV Magazine that US solar generation grew at its fastest rate in a decade. (PV Magazine)

Solar and wind are set to pass nuclear as a share of global electricity generation in 2026. Combined with hydro at 14%, clean sources now supply about 44% of global electricity. (Michael Liebreich)

Virginia's new Democratic governor moved the state back into the Regional Greenhouse Gas Initiative (RGGI), which funds renewable energy certificates worth 3 to 4 cents per kWh. (Politico Pro)

Quaise Energy raised $200 million to develop a super-hot geothermal power plant in Oregon. (Canary Media)

Maxwell Equipment achieved 32.5% efficiency in a perovskite/HJT tandem solar cell. (PV Tech)

If you sell, finance, or develop solar projects, this episode gives you the numbers and context to update your proposals and conversations with clients.

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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: CleanPowerHour@gmail.com

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