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

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.

What started as a way to bring natural cleaning products in from overseas has turned into a promising application for more sustainable agriculture solutions. Photo via LinkedIn

Houstonian brings natural, sustainable cleaning products to US with potential impact on agriculture industry

clean and green

When Kristy Phillips sought out a more natural cleaning solution, she didn't realize she'd be opting for a more sustainable option too.

Phillips founded Clean Habits and introduced Synbio, a patented cleaning formula that combines a unique blend of prebiotics and probiotics for their signature five-day clean, to the United States.

“Actually, we are a synbiotic, which is a prebiotic and a probiotic fused together,” says Phillips, founder and CEO of Clean Habits. “And that's what gives us the five-day clean, and we also have the longest shelf life — three years — of any probiotic on the market.”

Phillips learned about the European product almost three months before the COVID-19 pandemic. She had heard of probiotics for gut health but had no idea about probiotic cleaning.

“When COVID actually hit, I went back and really started researching the manufacturer who is based in Europe and all of their pre- and probiotic cleaners,” remembers Phillips. “And I just found it to be so interesting that they were using natural probiotics from the dirt, from the soil, from Mother Earth. And they created this entire product line that they have been using for over 15 years. And they had so many clinical trials and hospital studies and university studies that were showing that these probiotic cleaners were working, and they were reducing bacteria, viruses, even viruses in air."

But Phillips soon learned more of the sustainability angle of the product.

“Not only were they in the cleaning spray sector, but they were also already in water purification. They were in agriculture for animal house farming. They were doing a big trial in the subway station in Milan, putting the probiotics through a big HVAC system. And I just thought, there must be something here.”

Phillips was right. After reaching out to the manufacturer, she asked if they had a distributor here in the United States. They didn't.

“Since they didn’t have a distributor here in the U.S., I got the products and tried them out for myself,” says Phillips. “They were chemical-free, non-toxic and eco-friendly and after comparing them side-by-side with the commercial cleaners we all grew up with like the Lysols, bleach, and 409s, I found that the probiotic cleaners not only worked on surface areas to remove bad bacteria and germs, they continued to work for up to five full days at 100 percent.

“The commercial cleaners did kill 99.99 percent of all bacteria and germs, but they only did it for 30 minutes. And then the bacteria and germs start to grow back. And I am like, you know, nobody tells you that in their marketing. So that is what started my journey on the probiotics and creating a line to bring to the market here in the United States.”

Moving forward, Phillips’ vision for Clean Habits will extend beyond just traditional cleaning products. She sees that she can also have an impact on the industrial and commercial side of things.

“Right now, we are doing testing in agriculture, and this is something that our manufacturers in Europe have already done and they have been extremely successful with it,” says Phillips. “The goal is to see if we could reduce the use of pesticides in farming and replace it with just misting and spraying with the probiotics.

“We already know that by incorporating the probiotics throughout water systems, that we can actually clean the water and take it back to 100 percent natural water or pure water. We can get rid of E. coli, MRSA, staph. And so, we are going to start working with the state of Texas and into animal house cleaning and farming and cleaning their water.”

Additionally, Clean Habits already has research that proves that by incorporating the probiotics, they can start eliminating the bird flu, which affected a lot of Texas chickens recently to where over 350,000 of them had to be put down.

“We’re really trying to change the faith there in agriculture,” says Phillips. “I mean, to me, it's amazing because when I first started this, I was just trying to launch some cleaning supplies, which is fantastic, but this product is so much more than a multi-purpose cleaning spray, your floor cleaner, your drain cleaner or your laundry detergent. This goes into cleaning water, which is everyone's basic right to have clean water. And the fact that we can do it by using these probiotics, to me, my little brain can't compute that part of it.

“And then when we really did start looking into the agriculture and how, by incorporating the probiotics into the animal house, the cleaning of the water, and putting it into their housing system, that we can reduce methane gas by 41 percent. That is huge. This can profoundly change and revolutionize industries. And to be a part of that, and I am so excited.”

———

This article originally ran on InnovationMap.

Ad Placement 300x100
Ad Placement 300x600

CultureMap Emails are Awesome

Greentown Labs combines forces with MassChallenge to support more climate startups

strategic partnership

Climatetech incubator Greentown Labs has formed a strategic partnership with global zero-equity accelerator MassChallenge.

The two organizations have headquarters in the Boston area, while Greentown Labs is also co-located in Houston. MassChallenge has a hub in Dallas, as well as others in Israel, Switzerland and the United Kingdom.

The new partnership aims to strengthen the ecosystem for early-stage climatetech startups by providing more mentorship, support and a broader commercialization network for members, according to a news release.

Greentown Labs will share its expertise with the 23 startups in MassChallenge's first climate-specific accelerator, known as the MassChallenge Early Stage Climate program. Additionally, Greentown Labs members will benefit from MassChallenge's network of expert mentors, judges, entrepreneurs, partners, investors, philanthropists and others.

“There are so many synergies and shared values between MassChallenge and Greentown that launching a collaboration like this feels like a natural next step for our organizations as we strive to support as many early-stage climate founders as possible,” Georgina Campbell Flatter, Greentown Labs CEO, said in the news release. “We want to reduce the friction and barriers to market for these climate entrepreneurs and ultimately increase their opportunity for success—ecosystem collaboration is an essential part of solving these challenges together.”

Combined, Greentown and MassChallenge report that they have supported more than 4,500 founders and more than 1,000 climate startups. MassChallenge has awarded more than $18 million in equity-free grants to startups, which have gone on to raise over $15 billion, since it was founded in 2009. Greentown Labs has helped more than 575 startups raise more than $8.2 billion in funding since it launched in 2011.

Greentown recently added five startups to its Houston community and 14 other climatetech ventures to its Boston incubator. It also announced its third ACCEL cohort, which works to advance BIPOC-led startups in the climatetech space, earlier this year. Read more here.

Houston cleantech accelerator names 12 startups to 2025 cohort

early-stage accelerator

The Rice Alliance Clean Energy Accelerator has named 12 early-stage startups to its latest cohort.

The hybrid program, which operates in a hybrid capacity based out of the Ion, runs for 10 weeks and provides energy transition startups with training focused on fundraising, pilots, partnerships and sale. It begins July 8 and will be led by executive director Kerri Smith and program director Matthew Peña with support from executives-in-residence Lynn Frostman, John Jeffers, David Horsup and Dev Motiram.

The accelerator will culminate with a demo day on Sept. 18 at the Rice Alliance Energy Tech Venture Forum during the Houston Energy and Climate Startup Week.

Members of this year's cohort come from the Houston area as well as across the U.S. and Canada.

Class 5 for the Rice Alliance Clean Energy Accelerator includes:

  • Aqua-Cell Energy, which builds industrial-scale overnight batteries to provide affordable solar power
  • Arculus, a company that provides multilayer internal coating for pipelines that lowers friction, extends pipeline life and enables carbon dioxide transport and hydrogen blending
  • AtmoSpark, a Houston-based sustainable cooling and freshwater company that provides an electric field-driven air separation system that reduces dehumidification energy costs for data centers and industrial facilities
  • AtoMe, which delivers durable metallic composites to energy and aerospace companies using an eco-friendly dry blade method that eliminates harmful chemicals
  • ConceptLoop, a company that converts plastic waste into eco-friendly, low-carbon aggregate
  • Fathom Storage, which provides a more solidly embedded and steel-efficient anchoring solution for offshore service providers, wind energy developers and research institutes
  • GeoKiln, a Houston-based company that addresses issues of subsurface hydrogen extraction by applying proven oil and gas techniques to accelerate natural hydrogen reactions, enabling hydrogen production
  • Innowind Energy Solutions, a company that provides nonintrusive, active flow control devices to boost energy production and extend turbine lifespan
  • Lukera Energy, which transforms waste methane into high-value methanol using a breakthrough nanobubble technology
  • Metal Light Inc., which has developed a scalable, cost-effective Metal-Air generator to replace diesel generators
  • Moonshot Hydrogen, a company that converts food and agricultural waste into clean hydrogen and bioethanol
  • Resollant, a Woodlands-based company that delivers compact, zero-emission hydrogen and carbon reactors to refineries, petrochemical plants, steel and cement manufacturers and fuel producers

The Rice Alliance Clean Energy Accelerator has supported 55 ventures since it was founded in 2021, collectively raising over $250 million in funding, according to the university. See last year's cohort here.