John Berger, CEO of Houston-based Sunnova, explains the importance of energy independence and solar's role in achieving it. Courtesy of Sunnova

Following extreme temperatures and increasing grid instability this summer, CEO and Chairman of the board of residential solar power service company Sunnova Energy Corp., John Berger, is encouraging individuals to take charge of their energy needs.

Berger founded the Houston-grown company back in 2012, before solar energy was seen as a hip, clean power source. Now, Sunnova (NYSE: NOVA) is a leader in residential solar installations.

In a discussion with EnergyCapital Berger broke down misconceptions about solar power, predicted the rise of the home as a power station, and highlighted the importance of energy independence.

EnergyCapital: In the wake of a record breaking heat wave, how do you anticipate renewables being incorporated into the market as demand response soars?

John Berger: It's a rethinking of the entire system. What goes with that is let's rethink our regulatory structure. In this regard, I'm not talking about renewable energy versus fossil fuel. I'm talking about enabling and empowering the consumer and enabling and empowering the individual, whether that's a homeowner, a business owner, or apartment dweller. We don't do that in this country. We don't do it, outside, maybe Houston, Dallas, and a couple of other small markets. That's inhibiting the transition greatly. The monopolies want higher prices, because the more money they spend, the more money they make. They are not embracing change. They are not embracing technologies. They're not embracing demand response. Because that limits their revenue. So, we should recognize that that's the system. We shouldn't expect a different outcome when we've given us some incentive structure that: spend more money, don't change and don't adopt new technologies.

We need to change the entire energy system because technologies like solar, storage, software, and hardware exist and need to be adopted. We need to have the right regulatory system to allow consumers to adopt them. We need to have the right price, so that consumers can adopt these technologies at a pace that's far quicker than what we're seeing now so that they can ultimately address climate change.

As soon as we unleash the individual and empower the individual — powering energy independence is our tagline — we will solve the ultimate risk to humanity that is climate change a lot faster.

EC: Though solar is rising in popularity, are there any misconceptions about solar power in relation to residential installations that have persisted?

JB: I think the bigger one, whether it’s on a home or in a field, is that somehow since solar is intermittent, it's not reliable. It is intermittent to some degree, but — if you've ever run a utility system — coal is unreliable, gas fired power is unreliable, nuclear is even unreliable. We saw that in the winter storm Uri down in Texas. The gas wellheads froze off because they weren't prepared for the freeze. Were the wind turbines prepared for the freeze? No, they weren't either. The one source that performed better was solar. But you don't see that in a lot of the commentary because it didn't fit the political agenda that some have.

The question is, can you put enough of both on the system or on the home so that you can carry through whether it's a winter storm day or a heatwave in the summer? The misconception that solar will always be intermittent is the constant problem that we face. What are you going to do when the wind doesn't blow and the sun doesn't shine? My response: have you ever heard of a battery? We’ve got to get over that hurdle. Frankly, it's just an excuse and at best an uneducated excuse. We need to get over that and move on, and then figure out how we can best adopt the technologies of solar and storage that are plummeting in price, through empowering the individual.

EC: Sunnova is expanding into virtual power plants, can you discuss what that means and how they might impact grid stability?

JB: Virtual power plants, or grid services, or aggregation services — we call them energy services periods. There's a lot of different names for the same thing. It's basically taking solar storage software demand technologies and incorporating them into a centralized part of what we consider the grid — even though there's not a grid in the United States. The grid, as the common person understands it to be, is actually a haphazard collection of wires and centralized generation that was just put together over the last 130 years. There was not a master plan. You cannot physically move power from Houston to New York, for instance. You haven't ever been able to do that. We're trying to have that fill in of the small solar, the storage, the software, the demand side. We're saying each home, through this Sunnova adaptive platform with our sentient software connecting all these folks together, is likely to have some excess power that they can put onto a utility system or a regional system, so that the neighbor next to him can have that excess power if that neighbor needs it. It's a part of being a part of the Sunnova Club, that we can offer that value to you. That value may be that you get that extra power that you have to pay for where the value is the price in the wholesale market, or it could be that you get paid for that extra value that you happen to produce, through our adaptive platform. So it's a way of connecting homes together so that we optimize the solar and batteries that are on the other side of the meter or on the homes on the businesses. That's a way that you can squeeze more out of that investment that you made or that solar service that you have with us.

EC: As the cost of equipment for renewable energy systems, like EV charging stations and solar roof installations, decreases, is it possible to see a transformation of the home into a power station?

JB: I would go even further and say the home is the gas station now. That's what's already happened. It's fascinating if you really step back and think about it — the electric vehicle is becoming more popular, not necessarily because it addresses climate change, but because it's cool. And because it's enabled by software, AI, and a lot of the other things that make our experience in that car different. I think a lot of people now see and understand that. The other side of that is well, why can't that happen to your house as well? Like there's a lot of automation that should be happening in the house. There's a lot of software and hardware that's going in the house with the entertainment systems and all this other stuff.

You should reimagine how your house is powered and how it uses power. There's a lot of other things that you should be able to do in your house and it's more advanced than just flipping the light switches on and off and turning air conditioners on whether you're there or not.

We waste an enormous amount of energy in the United States. It's estimated that we literally burn over twice the amount of energy that we need and so therefore we're wasting over 50 percent of our energy usage. I mean, just think about the carbon release and the financial destruction that causes. We can do a lot better today with the technology. These technologies are available today and increasingly becoming more inexpensive.

EC: You describe Sunnova as “powering energy independence” — what do you mean by that and why is energy independence important?

JB: I think independence in your life just period is important. You want to have the ability to choose what you want to do in life. It's natural, especially Americans, to say, "I can choose anything I want to do. I can choose where I want to eat tonight. I can choose what car I buy." But for some strange reason, you can't choose your power provider in this country.

That's like if AT&T came to you on cellular and said, "We're going to actually triple your bill today. The regulator already signed off on it. We're gonna give you the flip phone back and take away Apple because Apple didn't agree to our terms. And you're going to like it." That's what we get from the electric industry. It's what we always get. That's unacceptable. We need to open things up to choice and Sunnova provides that choice to the consumers.

We increasingly are taking more technologies on, like load management, storage, more software with our sentient software, and we're coming in and saying, "Look, regardless of manufacturer, we're putting that together. Whatever way you want to fund that equipment, that service that you're procuring, that's fine with us you want to do cash fine, we'll do a loan fine." We offer that lease PPA, but that financing isn't enabled. But then we wrap our service together regardless of how you choose to fund it, which is different from anybody else. We say we're going to be there within 24 hours to fix that problem for most of your issues, so that means we're going to keep that power flowing. That's all it means. It's really that simple. When we do that we can come in and say you're going to be a part of the Sunnova adaptive energy platform. Basically, you're going to be able to get more value, a lower bill, if you're able to sell some of that power you don't need on that particular hot day to your neighbor through Sunnova. We’ll handle everything so you don't have to do anything. Or we can give you some additional power that you may not know you need to charge a car up or something like that and the neighbor will provide it through the Sunnova adaptive platform. So it's about how we rethink the entire energy business.

We're putting it in the hands of the individual to make the decision about what they want, you know, going over that point about reliability, if you work from home, you have a high demand for reliability. You have a higher willingness to pay for higher reliability versus somebody that has to go to work every single day of the week. They may not have that same desire, and they probably don't want to have that level of reliability. You should be able to choose. The utility just decides, the monopoly decides who gets served well and who doesn't. There's no consumer coming in that says I have a higher demand. So what do people do? They'll get dirty generators. One of the biggest industry growth periods in the entire economy is backup generators that burn diesel and burn natural gas. Again, we're taking an industrial age system with an archaic, communistic approach with economics and having bureaucrats make the decision, so we're getting suboptimal outcomes all the way to suboptimal fighting climate change. If we just empower the individual they'd say, “Well, why don't we just put more solar panels on and put more batteries and manage the load better when I bought the electric vehicle?” Those are the kinds of solutions that can be crafted individually for each consumer and that's what we do here at Sunnova.

EC: As a long-time Houstonian, how do you envision Houston’s role in leading the energy transition?

JB: I think Houston has a key role. Houston is the most diverse city in the United States. It is that diversity that's given a lot of strength to Sunnova over the years. Our quality of life is really high. All that means this is a fantastic place to build and create the new global energy industry. We understand oil and gas very well. The bigger oil and gas firms in the world are headquartered here and that's fantastic. They’ll be a part of the solution, I would hope. But if you look at innovation and transformation in industry, there's about a 100 percent hit ratio that the incumbents actually don't lead the change, and in many cases don't make it through the change. And so what we have to do is recognize that new leaders, new companies like Sunnova need to be formed and grown up here. Take advantage of the great quality of life, the low cost structure, the diversity of its people and its communities, and really lead the world and transform the energy industry.

I'm absolutely convinced that the Texan way of doing things, the Houston way of doing things, is a key part of that and demonstrating leadership. We certainly will do our part to help lead Houston forward to be the lead dog if you will, on the transformation of the global energy business.

— — —

This conversation has been edited for brevity and clarity.

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Houston solar manufacturer expands facility, production capacity

houston expansion

Solar tracking and manufacturing company PV Hardware USA is increasing its production capacity and expanding its Houston facility in an effort to meet growing demands.

The move marks the company's third expansion in the Houston area in three years. PV Hardware reports a 400 percent surge in national market growth over the past three years, as solar-based projects have been pivotal in energy resilience efforts.

PV Hardware plans to increase the capacity at its Houston facility by 42 percent, according to a news release. With the additional capacity, PV Hardware expects a 35 percent increase in production of pre-assembled parts. The company has not announced whether any additional employees will be hired or the costs of expansion.

In September, the company completed its new dedicated pre-assembly facility, which will help migrate difficult assembly into an easier manufacturing setting. The new pre-assembly area will also assist with streamlined field installation, enhanced schedule predictability and reduction of manual labor.

Citybiz reports that the expansion totals approximately 34,200 square feet.

PV Hardware USA aims to make solar installation more efficient. For large-scale solar projects, PV Hardware USA’s pre-assembly process helps to relieve assembly work done by installation teams. According to PV Hardware USA, it reduces the number of on-site components by 70 percent.

“Traditionally, manufacturers pushed the assembly burden onto the jobsite,” Rodolfo Bitar, vice president of business development for PVH USA, told Renewable Energy Magazine. “We ask a different question: what work can be done more efficiently before the equipment ever leaves the factory? By managing the assembly of 188 loose parts per row in our controlled manufacturing environment, we remove field complexity and make installation highly predictable.”

PV Hardware USA produces single-axis solar trackers made in Texas and has supplied over 52 gigawatts of solar trackers worldwide.

“The expanded presence in Texas underscores a long-term commitment: bringing world-class solar expertise to local American manufacturing, supporting communities, and serving as a reliable partner through the clean energy transition,” the company said in the release.

In July of 2025, the company opened its 95,000-square-foot facility, which was the second Houston location following its initial $30 million U.S. manufacturing facility, which, at 50,000 square feet, is one of America's largest solar tracker manufacturing facilities.

Gulf of Mexico marine life dramatically declined after BP spill, study says

Gulf Life

In a deep, dark part of the Gulf of Mexico, the number of marine animals plummeted by about 60% in the years following the 2010 Deepwater Horizon explosion, a new study found.

In a crucial part of the Gulf between the light surface and the darkest depths, where the BP-operated well failed and dumped 134 million gallons of oil, the number of fish found dropped by 63.5% from the year after the spill to 2015. Crustaceans, including shrimp and krill, a key food for whales, went down 62%, and larger animals like squid and octopuses fell 59.7%, according to a study published Monday in the journal PNAS.

And those populations haven't come close to recovering, the study found.

Researchers focused on the ocean's “twilight zone,” a vast area above the seafloor, where much of the surface marine life, including dolphins and whales, feast on creatures. Yet little is known about this gigantic ecosystem, and this region of the Gulf had not been studied before the 2010 spill, said study lead author Tracey Sutton, a biological oceanographer at Nova Southeastern University.

A 2011 post-spill exploration cited in the research, which used six sets of nets at different depths and acoustic sonar, gave scientists a good sense of how much sea life was in the area between the surface and 5,000 feet deep (1,500 meters). They returned to the same place with the same equipment three-and-a-half years later and found sea life was between one-third and one-quarter of what it was in 2011.

“We saw this big decline,” Sutton said. “The question was then why? So we looked at all of the natural variables we thought could account for it, namely temperature, oxygen supply and food. None of those vary with the decline. The event that did was the oil spill. So we think that’s the most likely cause of the decline.”

Researchers kept on sampling since 2015 and the low populations remained, with a slight rise in 2022 and 2023 that did not prove statistically significant or lasting, Sutton said.

Documenting the decline

Sutton's team documented the population declines with three different lines of evidence: what they caught in the nets, what their acoustic sonar found and genetic studies showing the species losing genetic diversity because of inbreeding.

A lot of marine life died instantly after the explosion, which killed 11 workers, and from nearly five months of leaking oil and gas. Those pollutants got stored in the eggs of survivors and subsequent generations of critters got more compromised and weaker, Sutton said.

BP spokesperson Paul Takahashi said the accident “forever changed” the company: “We have made many changes intended to help prevent an event like this from ever happening again.”

Both the oil and the dispersants used to clean the spill hurt fish, but in different ways, said study co-author Isabel Romero, a chemical oceanographer at the University of South Carolina. Oil is more toxic and an overall threat, but the dispersant breaks the oil into smaller droplets, increasing the exposure of animals that live in the deeper water column, she said.

Dispersants caused many problems, and new studies show that in future accidents, it would be better to avoid those chemicals and instead add agents that increase oil-munching microbes, said former National Science Foundation Director Rita Colwell, a University of Maryland environmental microbiologist who headed a 10-year, $500 million BP-funded program to study spill effects.

Sutton said his team couldn’t prove an exact causal link to the BP oil spill, but by eliminating the other possibilities and looking at the timing, it’s logically clear that the spill caused the problem.

The krill population dropped 72%. Lanternfish — odd fish with blue-green lights embedded over their bodies — are a third of what they used to be, Sutton said. The stunning but scary dragonfish — with sharp teeth, light organs and a lure attached to its head — also had big losses, he said.

“These are foundational species,” Sutton said. “They're the things most things eat. So it's no wonder that we had wholesale changes across the community.”

The inner ocean is more unknown than outer space

Scientists learned much about this unexplored area of the Gulf.

“One of our biggest findings from the whole thing is how connected the whole oceanic Gulf is from top to bottom because the animals move up and down,” Sutton said. “There are predators at the top that dive deep. Lots of things that are deep that come up at night. So the system is one very large pulsing system, rather than just a layered system like people might have thought beforehand.”

Outside scientists were especially bothered by where the spill damaged.

“We know more about space in some ways than we do about the inner ocean. Because we can’t see these regions, there is a tendency to assume everything is fine, but here we have a clear result showing that something went very wrong," Scripps Institution of Oceanography marine scientist Kaitlin Frasier said in an email.

Frasier, who wasn't part of the study released Monday, published a post-spill study in 2024 looking at Gulf of Mexico whales and dolphins, finding population drops as high as 83%.

“It’s shocking how a single failure in a drilling rig can have this vast and sustained impact over thousands of square kilometers, with little visible recovery over 13 years after the spill,” said Dalhousie University marine scientist Boris Worm, who wasn't part of the study. “It is important that we see this, because for the longest time these consequences were completely out of sight and out of mind.”

Worm and Colwell said this damage should be kept in mind as the world talks about deep-sea mining and increased oil drilling in deep waters.

These 5 trailblazing Houston startups are leading the energy transition

meet the finalists

Houston is home to a growing number of startups reshaping what it means to be called the "Energy Capital of the World."

As part of the 2026 Houston Innovation Awards, our Energy Transition Business category honors those innovative startups that are providing solutions within renewables, climatetech, clean energy, alternative materials, circular economy and more.

Five clean energy startups have been named finalists for the 2026 award. The finalists, selected by our esteemed panel of judges, range from a lower-emission steel producer to a diagnostics platform developer working to support batteries used in data centers.

Read more about these innovative businesses, their initiatives, and their inspirational founders below. The 2026 winners will be announced on InnovationMap.com in mid-November.

Capwell Services

Methane capture company Capwell Services works to eliminate vented oil and gas emissions economically for operators. According to the company, methane emissions are vented from most oil and gas facilities due to safety protocols, and operators are not able to capture the gas cost-effectively, leading operators to emit more than 14 million metric tons of methane per year in the U.S. and Canada. Founded in 2022, Capwell specializes in low and intermittent flow vents for methane capture.

The company began as a University of Pennsylvania senior design project led by CEO Andrew Lane. It has since participated in programs with Greentown Labs, the Rice Clean Energy Accelerator and the Creative Destruction Lab Energy Cohort at Texas A&M University. The company moved to Houston in 2023 and raised a pre-seed round. It deployed two commercial units this year, according to its application.

FlowCellutions

Energytech startup FlowCellutions is developing a chemistry-agnostic diagnostics platform for flow and metal-air batteries supporting data centers and critical infrastructure. The platform is designed to help reduce operating costs, prevent failures and costly downtime, and extend battery lifetime from approximately seven years to more than 30 years. It has deployed four paid pilots and plans to take insights from the programs to develop its next-gen sensor platform technology.

CEO Becca Segel founded the company in 2022. It is a member of Greentown Labs, and Segel was a 2025 Activate Fellow. The company has raised over $2 million in non-dilutive funding and received a $1.5 million NSF SBIR Fast-Track award earlier this year.

Hertha Metals

Hertha Metals produces lower-cost, lower-emission steel and high-purity iron. The company has developed a single-step process that uses natural gas as a direct reductant instead of metallurgical coal, which cuts production costs by more than 25 percent and emissions by up to 50 percent, according to the company. The same process produces high-purity iron needed for high-purity steels and rare earth magnets. The company says it aims to "re-industrialize America’s production of critical materials."

Hertha Metals was founded by CEO Laureen Meroueh in 2022 and emerged from stealth last year with more than $17 million in venture capital funding. The company closed a $133.65 million Series A this month and also broke ground on its $100M high-purity iron factory known as Chalyx in Conroe.

Mars Materials

Clean chemical manufacturing business Mars Materials is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals. The company develops and produces its drop-in chemical products in Houston and uses an in-licensed process for the National Renewable Energy Lab to produce acrylonitrile, which is used to produce plastics, synthetic fibers, and rubbers.

Founded in 2019 by CEO Aaron Fitzgerald, CTO Kristian Gubsch, and vice president of operations Trey Sheridan, the company has secured over $7.2M in financing and is backed by Bill Gates’ Breakthrough Energy, Shell, Black & Veatch, and other organizations. It won in the Minority-founded Business Category in last year's Houston Innovation Awards.

Solidec

Chemical manufacturing company Solidec has developed autonomous generators that extract molecules from water and air and convert them into pure chemicals and fuels that are free of carbon emissions on-site, eliminating the need for transport, storage, and permitting. The company was founded around innovations developed by Rice University associate professor Haotian Wang.

The company was selected for the Chevron Technology Ventures’ Catalyst Program, Greentown Labs, NSF I-Corps and was part of the first cohort of the Activate Houston program. It won first place at the 2024 startup pitch competition at CERAWeek. Solidec was founded in 2023 by Wang, who serves as an advisor, CEO Ryan DuChanois, and CTO Yang Xia. It closed a $2.5 million seed round in 2025.