A photo of BP's new solar farm in Texas. Photo via bp.com

Solar farms are booming and putting thousands of hungry sheep to work

Solar Power

On rural Texas farmland, beneath hundreds of rows of solar panels, a troop of stocky sheep rummage through pasture, casually bumping into one another as they remain committed to a single task: chewing grass.

The booming solar industry has found an unlikely mascot in sheep as large-scale solar farms crop up across the U.S. and in the plain fields of Texas. In Milam County, outside Austin, SB Energy operates the fifth-largest solar project in the country, capable of generating 900 megawatts of power across 4,000 acres.

How do they manage all that grass? With the help of about 3,000 sheep, which are better suited than lawnmowers to fit between small crevices and chew away rain or shine.

The proliferation of sheep on solar farms is part of a broader trend — solar grazing — that has exploded alongside the solar industry.

Agrivoltaics, a method using land for both solar energy production and agriculture, is on the rise with more than 60 solar grazing projects in the U.S., according to the National Renewable Energy Laboratory. The American Solar Grazing Association says 27 states engage in the practice.

"The industry tends to rely on gas-powered mowers, which kind of contradicts the purpose of renewables," SB Energy asset manager James Hawkins said.

A sunny opportunity
Putting the animals to work on solar fields also provides some help to the sheep and wool market, which has struggled in recent years. The inventory of sheep and lamb in Texas fell to 655,000 in January 2024, a 4% drop from the previous year, according to the most recent figures from the U.S. Department of Agriculture.

Because solar fields use sunny, flat land that is often ideal for livestock grazing, the power plants have been used in coordination with farmers rather than against them.

Sheepherder JR Howard accidentally found himself in the middle of Texas' burgeoning clean energy transition. In 2021, he and his family began contracting with solar farms — sites with hundreds of thousands of solar modules — to use his sheep to eat the grass.

What was once a small business has turned into a full-scale operation with more than 8,000 sheep and 26 employees.

"Just the growth has been kind of crazy for us," said Howard, who named his company Texas Solar Sheep. "It's been great for me and my family."

Following the herd
Some agriculture experts say Howard's success reflects how solar farms have become a boon for some ranchers.

Reid Redden, a sheep farmer and solar vegetation manager in San Angelo, Texas, said a successful sheep business requires agricultural land that has become increasingly scarce.

"Solar grazing is probably the biggest opportunity that the sheep industry had in the United States in several generations," Redden said.

The response to solar grazing has been overwhelmingly positive in rural communities near South Texas solar farms where Redden raises sheep for sites to use, he said.

"I think it softens the blow of the big shock and awe of a big solar farm coming in," Redden said.

Fielding more research
Agrivoltaics itself isn't new. Solar farms are land-intensive and require a lot of space that could be used for food production. Agrivoltaics compensates by allowing the two to coexist, whether growing food or caring for livestock.

There is a lot still unknown about the full effects of solar grazing, said Nuria Gomez-Casanovas, an assistant professor in regenerative system ecology at Texas A&M University.

Not enough studies have been done to know the long-term environmental impacts, such as how viable the soil will be for future agriculture, although Gomez-Casanovas suspects solar grazing may improve sheep productivity because the panels provide shade and can be more cost-efficient than mowing.

"We really have more questions than answers," Gomez-Casanovas said. "There are studies that show that the land productivity is not higher versus solar alone or agriculture alone, so it's context-dependent."

As one of Texas' largest solar sheep operators, Howard has more clients than he can handle. He expects to add about 20 more employees by the end of this year, which would nearly double his current workforce. As for the sheep, he has enough already.

Recurrent Energy's Liberty Solar project near Houston is now operational, adding 134 megawatts of clean energy capacity to power 15,000 homes annually in the MISO market. Photo via recurrentenergy.com

Houston-area solar farm to light up Texas with clean power for 15,000 homes

switch flipped

A clean energy developer and operator of solar and energy storage assets has announced the completion and commercial operation of a Houston-area farm that will power 15,000 homes a year.

Recurrent Energy's Liberty Solar project outside of Houston has powered on and will expand solar energy capacity in the Midcontinent Independent System Operator market. Recurrent Energy is an Austin-based a subsidiary of Canadian Solar.

“Projects like Liberty Solar are instrumental to meeting the soaring demand for electricity in Texas,” Executive Director of Texas Solar Power Association Mark Stover says in a news release. "We commend Recurrent Energy for pushing through the development process and working with corporate buyers to deliver new, predictable, clean power to the MISO region of Texas.”

Liberty Solar is in Liberty County, which is about 50 miles northeast of Houston and will be a 134 megawatt solar project. Customers include Autodesk Inc., Biogen Inc., EMD Electronics (the U.S. and Canada electronics business of Merck KGaA, Darmstadt, Germany), and Wayfair Inc.

“Investment in additional renewable capacity on the grid is essential to delivering more sustainable outcomes, and we believe that the Liberty Solar project will help make renewable energy more accessible in North America,” Joe Speicher, chief sustainability officer at Autodesk, adds in tje release. “Autodesk is committed to 100% renewable energy sourcing for our facilities, cloud services and hybrid workforce, and we are committed to leveraging our climate commitments to drive transformational change in our energy generation and deployment.”

Recurrent Energy celebrated the project by welcoming customers at Liberty Solar on October 23 for a guided tour and ribbon cutting ceremony.

“Liberty Solar is a fantastic project that expands Recurrent Energy’s project ownership in MISO,” Ismael Guerrero, CEO of Recurrent Energy, says in the release. “We are thrilled to complete this project on time and on budget in support of the renewable energy goals of our customers.”

Last year, Recurrent Energy scored $200 million in financing for the project, including $120 million in financing through Rabobank, Nord LB, and U.S. Bank in the form of construction debt, a letter-of-credit facility, and a term facility. In addition, U.S. Bancorp Impact Finance, a subsidiary of U.S. Bank, is providing $80 million in tax equity.

Ken Nguyen, principal technical program manager at bp, joins the Houston Innovators Podcast to discuss the company's new partnership with NASA. Photo courtesy of bp

Podcast: Houston energy tech leader on breaking down industry silos, sustainable digitization

listen now

Ken Nguyen oversees the implementation of new technologies at bp, which has its United States headquarters in Houston, and that includes software and hardtech, from cybersecurity to the digitization of the industry, which is an integral part of bp's energy transition plan.

"For bp, we do feel like as we transition as an international oil and gas company into an integrated energy company and we lean into the energy transition, the adoption of new technology is a critical part of making that viable for the planet and for the company," he says on the Houston Innovators Podcast.

According to Nguyen, principal technical program manager at bp, the company has invested its resources into exploring energy transition technologies like electric vehicle charging — including opening a fast-charging station at its Houston office — and renewable energy, including a solar farm about 10 miles northeast of Corpus Christi.

Another technology bp is keen on is digital twin technology, which can be crucial for enhancing safety for bp personnel and reducing emissions.

Nguyen says digital twin technology "allows us to be able to design and mirror scenarios with real-time variables, such as weather, off-take demands, and volatility."

Recently, in order to explore innovation within these technology verticals, bp and NASA entered into a Space Act Agreement with NASA.

"Houston has always been known as the Space City, and we're also known as the Energy Capital of the World, but there hasn't always been collaboration," Nguyen says. "The challenges that NASA is facing is very similar to the challenges that the oil industry faces — we operate in very harsh environments, safety is the most critical aspect of our operation, and now the economic business model for NASA has changed."

Nguyen explains that while both bp and NASA are navigating similar challenges and changes within their industry, they are going about it in different ways. That's where the opportunity to collaborate comes in.

The partnership, which is still new and not fully fleshed out, will look at collaborative innovation into a few focus areas to start out with, including hydrogen storage and development, AI and general intelligence, robotics, and remote operations

"Houston continues to excel — in energy production and in space exploration — but by coming together," Nguyen says, "and for us to be able to tap into (NASA's) knowledge is tremendous. And we, within oil and gas, have a unique set of skills to blend into that with the hopes being that the city becomes this incubator for technology. The potential is there."

Talos Energy announced that it has entered into an agreement for the sale of its wholly owned subsidiary Talos Low Carbon Solutions to TotalEnergies. Photo via Getty Images

Talos Energy sells off low carbon arm to TotalEnergies in $148M deal

M&A moves

A Houston-based company is divesting its low-carbon subsidiary to TotalEnergies, which has its United States headquarters in Houston.

Talos Energy announced that it has entered into an agreement for the sale of its wholly owned subsidiary Talos Low Carbon Solutions LLC to TotalEnergies. The deal is for a purchase price of $125 million plus customary reimbursements, adjustments and retention of cash, which totals approximately $148 million.

According to a news release, Talos plans to use the proceeds from the sale to repay borrowings under its credit facility and for general corporate purposes. The sale includes Talos's entire carbon capture and sequestration business, which includes its three projects along the U.S. Gulf Coast with Bayou Bend CCS, Harvest Bend CCS, and Coastal Bend CCS.

There is an opportunity for additional future cash payments upon achievement of certain milestones at the Harvest Bend or Coastal Bend projects for Talos. More payments can be obtained also upon a sale of the aforementioned projects by TotalEnergies.

"Since TLCS's inception, we have successfully applied our energy expertise as an early mover aimed at developing decarbonization solutions along the U.S. Gulf Coast,” Talos President and CEO Timothy S. Duncan says in a news release. ”Strong market interest during our capital raise provided the strategic option to fully monetize the business to TotalEnergies, an established global leader in CCS development."

Talos Executive Vice President, Low Carbon Strategy and Chief Sustainability Officer Robin Fielder will continue to serve in her role for a transition period before leaving Talos.

"Robin and our entire CCS team did an outstanding job crystallizing value for Talos shareholders for a strong financial return," Duncan continues. "The transaction will further enable Talos to prioritize cash flow generation and optimal capital allocation in our core Upstream business. We are also continuing to explore business development and strategic M&A opportunities."

TotalEnergies is active in the Houston energy transition ecosystem and recently signed on as a partner at Greentown Houston. Last fall, the company also started commercial operations of its new solar farm, Myrtle Solar, just south of Houston.

Combining batteries with green energy is a fast-growing climate solution. Photo via Getty Images

Batteries and green energies like wind and solar combine for major climate solution across Texas, U.S.

team work

In the Arizona desert, a Danish company is building a massive solar farm that includes batteries that charge when the sun is shining and supply energy back to the electric grid when it's not.

Combining batteries with green energy is a fast-growing climate solution.

“Solar farms only produce when the sun shines, and the turbines only produce when the wind blows,” said Ørsted CEO Mads Nipper. “For us to maximize the availability of the green power, 24-7, we have to store some of it too.”

The United States is rapidly adding batteries, mostly lithium-ion type, to store energy at large scale. Increasingly, these are getting paired with solar and wind projects, like in Arizona. The agencies that run electric grids, utility companies and developers of renewable energies say combining technologies is essential for a green energy future.

Batteries allow renewables to replace fossil fuels like oil, gas and coal, while keeping a steady flow of power when sources like wind and solar are not producing. For example, when people are sleeping and thus using less electricity, the energy produced from wind blowing through the night can be stored in batteries — and used when demand is high during the day.

Juan Mendez, a resident of Tempe, Arizona, gets power from local utility Salt River Project, which is collaborating with Ørsted on the Eleven Mile Solar Center. As a state senator, Mendez pushed SRP to move to renewable energies.

He thinks the power company is still investing too much in gas and coal plants, including a major expansion planned for a natural gas plant in Coolidge, Arizona, near the solar center.

“This solar-plus-storage is a good step, but SRP needs to do more to provide clean energy and clean up our air and help address climate change," Mendez said.

The utility said it’s adding more renewables to its energy mix and recently pledged to zero out its emissions by 2050.

The U.S. has the second most electrical storage in the world, after China. In 2023, the U.S. added an estimated 7.5 gigawatts — 62% more than in 2022, according to the BloombergNEF and the Business Council for Sustainable Energy factbook. That amount can power 750,000 homes for a day and brings the total amount of installed capacity nationwide to nearly enough for 2 million homes for one day, according to BloombergNEF.

In the U.S., California leads in energy storage as it aggressively cuts greenhouse gas emissions. It has twice as much as any other state. Residential, commercial and utility-scale battery installations increased by 757% there over just four years, meaning there's now enough to power 6.6 million homes for up to four hours, according to the California Energy Commission.

That's partly because in 2013, the California Public Utilities Commission told utilities to buy energy storage with a target to be met by 2020. Since then, power companies have continued to add more batteries to help the state meet clean electricity requirements.

Southern California Edison is one utility adding thousands of hours of energy storage. It is putting in solar-plus-batteries to replace some power plants that burn natural gas and would typically supply electricity in the evening.

“If it’s just clean and not reliable, you really don’t have anything,” said William Walsh, vice president for energy procurement and management. “We need both.”

In California, batteries proved their value in September 2022, as the West was experiencing a long heat wave that sent temperatures into the triple digits. Electricity demand reached the highest the state had ever seen on Sept. 6, 2022, as people cranked up air conditioners.

Walsh credits the batteries added to the grid between 2020 and 2022 with helping to avoid blackouts. Two years earlier, there were rolling electricity outages in California during a similar extreme heat wave.

Texas has the second-most battery storage after California. Last month, Schneider Electric announced it's teaming up with energy company ENGIE North America on solar and battery systems in Texas to get closer to the French multinational’s 100% renewable energy goal in the U.S. and Canada. Before the Inflation Reduction Act, a major climate law passed in 2022, the deal and the necessary $80 million investment would not have been possible, said Hans Royal, Schneider Electric's senior director for renewable energy and carbon advisory.

Royal is advising other global Fortune 500 companies it works with to get into the market.

“The industry needs that, the grid needs it," said Royal.

Back in Arizona, Ørsted’s Eleven Mile Solar Center covers 2,000 acres in rural Pinal County. It has 857,000 solar panels and more than 2,000 cubes that look like large shipping containers but contain battery modules. Ørsted also has large solar and storage projects in Texas and Alabama, and in Europe.

When the Arizona facility opens this summer, most power from the solar farm will go to Facebook owner Meta's data center in Mesa. The solar power not needed by Meta, in addition to the power stored in the batteries, will go to the local utility's customers. The new batteries can ensure power to roughly 65,000 homes during peak hours of demand.

“What I think is exciting is just how rapidly this market is moving," said Yayoi Sekine, head of energy storage at BloombergNEF. “There's so much pressure for the U.S. and different regions to decarbonize, and storage is one of the major technologies to enable that. There's a lot of momentum."

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Scientists warn greenhouse gas accumulation is accelerating and more extreme weather will come

Climate Report

Humans are on track to release so much greenhouse gas in less than three years that a key threshold for limiting global warming will be nearly unavoidable, according to a study released June 19.

The report predicts that society will have emitted enough carbon dioxide by early 2028 that crossing an important long-term temperature boundary will be more likely than not. The scientists calculate that by that point there will be enough of the heat-trapping gas in the atmosphere to create a 50-50 chance or greater that the world will be locked in to 1.5 degrees Celsius (2.7 degrees Fahrenheit) of long-term warming since preindustrial times. That level of gas accumulation, which comes from the burning of fuels like gasoline, oil and coal, is sooner than the same group of 60 international scientists calculated in a study last year.

“Things aren’t just getting worse. They’re getting worse faster,” said study co-author Zeke Hausfather of the tech firm Stripe and the climate monitoring group Berkeley Earth. “We’re actively moving in the wrong direction in a critical period of time that we would need to meet our most ambitious climate goals. Some reports, there’s a silver lining. I don’t think there really is one in this one.”

That 1.5 goal, first set in the 2015 Paris agreement, has been a cornerstone of international efforts to curb worsening climate change. Scientists say crossing that limit would mean worse heat waves and droughts, bigger storms and sea-level rise that could imperil small island nations. Over the last 150 years, scientists have established a direct correlation between the release of certain levels of carbon dioxide, along with other greenhouse gases like methane, and specific increases in global temperatures.

In Thursday's Indicators of Global Climate Change report, researchers calculated that society can spew only 143 billion more tons (130 billion metric tons) of carbon dioxide before the 1.5 limit becomes technically inevitable. The world is producing 46 billion tons (42 billion metric tons) a year, so that inevitability should hit around February 2028 because the report is measured from the start of this year, the scientists wrote. The world now stands at about 1.24 degrees Celsius (2.23 degrees Fahrenheit) of long-term warming since preindustrial times, the report said.

Earth's energy imbalance

The report, which was published in the journal Earth System Science Data, shows that the rate of human-caused warming per decade has increased to nearly half a degree (0.27 degrees Celsius) per decade, Hausfather said. And the imbalance between the heat Earth absorbs from the sun and the amount it radiates out to space, a key climate change signal, is accelerating, the report said.

“It's quite a depressing picture unfortunately, where if you look across the indicators, we find that records are really being broken everywhere,” said lead author Piers Forster, director of the Priestley Centre for Climate Futures at the University of Leeds in England. “I can't conceive of a situation where we can really avoid passing 1.5 degrees of very long-term temperature change.”

The increase in emissions from fossil-fuel burning is the main driver. But reduced particle pollution, which includes soot and smog, is another factor because those particles had a cooling effect that masked even more warming from appearing, scientists said. Changes in clouds also factor in. That all shows up in Earth’s energy imbalance, which is now 25% higher than it was just a decade or so ago, Forster said.

Earth’s energy imbalance “is the most important measure of the amount of heat being trapped in the system,” Hausfather said.

Earth keeps absorbing more and more heat than it releases. “It is very clearly accelerating. It’s worrisome,” he said.

Crossing the temperature limit

The planet temporarily passed the key 1.5 limit last year. The world hit 1.52 degrees Celsius (2.74 degrees Fahrenheit) of warming since preindustrial times for an entire year in 2024, but the Paris threshold is meant to be measured over a longer period, usually considered 20 years. Still, the globe could reach that long-term threshold in the next few years even if individual years haven't consistently hit that mark, because of how the Earth's carbon cycle works.

That 1.5 is “a clear limit, a political limit for which countries have decided that beyond which the impact of climate change would be unacceptable to their societies,” said study co-author Joeri Rogelj, a climate scientist at Imperial College London.

The mark is so important because once it is crossed, many small island nations could eventually disappear because of sea level rise, and scientific evidence shows that the impacts become particularly extreme beyond that level, especially hurting poor and vulnerable populations, he said. He added that efforts to curb emissions and the impacts of climate change must continue even if the 1.5 degree threshold is exceeded.

Crossing the threshold "means increasingly more frequent and severe climate extremes of the type we are now seeing all too often in the U.S. and around the world — unprecedented heat waves, extreme hot drought, extreme rainfall events, and bigger storms,” said University of Michigan environment school dean Jonathan Overpeck, who wasn't part of the study.

Andrew Dessler, a Texas A&M University climate scientist who wasn't part of the study, said the 1.5 goal was aspirational and not realistic, so people shouldn’t focus on that particular threshold.

“Missing it does not mean the end of the world,” Dessler said in an email, though he agreed that “each tenth of a degree of warming will bring increasingly worse impacts.”

Chevron enters lithium market with Texas land acquisition

to market

Chevron U.S.A., a subsidiary of Houston-based energy company Chevron, has taken its first big step toward establishing a commercial-scale lithium business.

Chevron acquired leaseholds totaling about 125,000 acres in Northeast Texas and southwest Arkansas from TerraVolta Resources and East Texas Natural Resources. The acreage contains a high amount of lithium, which Chevron plans to extract from brines produced from the subsurface.

Lithium-ion batteries are used in an array of technologies, such as smartwatches, e-bikes, pacemakers, and batteries for electric vehicles, according to Chevron. The International Energy Agency estimates lithium demand could grow more than 400 percent by 2040.

“This acquisition represents a strategic investment to support energy manufacturing and expand U.S.-based critical mineral supplies,” Jeff Gustavson, president of Chevron New Energies, said in a news release. “Establishing domestic and resilient lithium supply chains is essential not only to maintaining U.S. energy leadership but also to meeting the growing demand from customers.”

Rania Yacoub, corporate business development manager at Chevron New Energies, said that amid heightening demand, lithium is “one of the world’s most sought-after natural resources.”

“Chevron is looking to help meet that demand and drive U.S. energy competitiveness by sourcing lithium domestically,” Yacoub said.

Engie to add 'precycling' agreements for forthcoming solar projects

reduce, reuse

Houston-based Engie North America has partnered with Arizona-based Solarcycle to recycle 1 million solar panels on forthcoming projects with a goal of achieving project circularity.

The collaboration allows Engie to incorporate "precycling" provisions into power purchase agreements made on 375 megawatts worth of projects in the Midwest, which are expected to be completed in the next few years, according to a news release from Engie.

Engie will use Solarcycle's advanced tracking capabilities to ensure that every panel on the selected projects is recycled once it reaches its end of life, and that the recovered materials are returned to the supply chain.

Additionally, all construction waste and system components for the selected projects will be recycled "to the maximum degree possible," according to Engie.

“We are delighted to bring this innovative approach to life. Our collaboration with Solarcycle demonstrates the shared commitment we have to the long-term sustainability of our industry,” Caroline Mead, SVP power marketing at ENGIE North America, said in the release.

Solarcyle, which repairs, refurbishes, reuses and recycles solar power systems, estimates that the collaboration and new provisions will help divert 48 million pounds of material from landfills and avoid 33,000 tons of carbon emissions.

“ENGIE’s precycling provision sets a new precedent for the utility-scale solar industry by proving that circular economy principles can be achieved without complex regulatory intervention and in a way that doesn’t require an up-front payment," Jesse Simons, co-founder and chief commercial officer at SOLARCYCLE, added in the release. "We’re happy to work creatively with leaders like ENGIE to support their commitment to circularity, domestic energy, and sustainability.”