Sun Day Houston will be held this Sunday, Sept. 21. Photo via Upslash.

Local organizations will celebrate solar, wind and renewable energy this Sunday, Sept. 21, during Sun Day Houston.

Timed with the autumn equinox, the inaugural event will bring together speakers, exhibits, workshops and hands-on activities that promote the adoption of clean power sources outside of Christ the King Lutheran Church at 2353 Rice Blvd., near Rice University. It will take place from 2-4:30 p.m.

Featured speakers include:

  • Daniel Cohan, professor of civil and environmental engineering at Rice, who will speak on the science of renewable energy and its growing role in ERCOT and the national U.S. energy grid
  • Andrea Oyuela, manager of the Harris County Solar for All program, who will speak on Harris County’s efforts to expand solar energy access to underserved communities and the county's leadership role in the Texas Solar for All Coalition

Attendees will also be able to participate in mobile solar and home solar battery displays, an electric vehicle show-and-tell, and a rain barrel workshop. Other workshops include the Tips and Tricks for Going Solar Workshop and the Welcoming the Energy Transition Workshop.

Exhibits will be hosted by:

  • Harris County Sustainability Division
  • Solar United Neighbors
  • Environment Texas
  • Public Citizen
  • Houston Chapter, Citizens Climate Lobby
  • Texas Campaign for the Environment
  • Houston Electric Vehicle Association
  • Houston Climate Boulder Project
  • Turtle Island Restoration Network
  • Climate Conversation Brazoria County
  • Sunrise Movement
  • Rice Wildlife Conservation Corps

Sun Day Houston is part of hundreds of Sun Day events worldwide. TH!RD ACT, a national nonprofit founded by environmentalist Bill McKibben, is serving as the primary sponsor. It is co-sponsored by 22 Gulf Coast environmental organizations, including Sierra Club of Houston, Harris County Sustainability Division, the Green Building Council, and many others. Find more information here.

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Solidec secures pre-seed funding from Houston VC firm

fresh funding

Houston-based Flathead Forge Fund 1 has invested in Houston startup Solidec, which specializes in modular onsite chemical manufacturing.

The investment was part of Solidec’s recent round of more than $2 million in pre-seed funding. The amount of Flathead Forge’s investment wasn’t disclosed.

“Flathead Forge brings exactly the kind of domain-specific capital and operational network that a company at our stage needs. Their focus on water and critical minerals makes this a genuinely strategic relationship,” Ryan DuChanois, co-founder and CEO of Solidec, said in a news release.

Other investors in the round included New Climate Ventures, Collaborative Fund, Echo River Capital, Ecosphere Ventures, Plug and Play Ventures, Safar Partners and Semilla Climate Capital.

Solidec produces industrial chemicals, including hydrogen peroxide, formic acid and acetic acid, using only air, water and electricity. Its modular reactors eliminate the need for energy-intensive production and long-haul distribution.

“Solidec’s platform cuts cost, emissions, and supply-chain fragility at the source,” Douglas Lee, managing director of Flathead Forge, added in the statement.

DuChanois said in an email that the company plans to use the funding to "scale (its) modular chemical manufacturing platform."

Solidec recently announced a pilot project with Lynas Rare Earths, the world’s only commercial producer of separated light and heavy rare earth oxides outside China, for production of hydrogen peroxide for a Lynas facility in Australia.

Solidec, a member of Greentown Labs Houston, spun out of associate professor Haotian Wang’s lab at Rice University in 2024. Wang focuses on developing new materials and technology for energy and environmental uses, such as energy storage and green synthesis.

Greentown Labs names new COO, appoints new Head of Houston

new leaders

Greentown Labs has reshuffled its leadership, elevating Houston leaders into new roles.

Lawson Gow was named COO of the Houston- and Boston-based climatech incubator in February 2026. In his new role, he will focus on optimizing Greentown's structure, building new internal and external systems and developing a plan for growth.

Gow was named Head of Houston in July. He previously founded The Cannon, a coworking space with eight locations in the Houston area, with additional partner spaces. He also recently served as managing partner at Houston-based investment and advisory firm Helium Capital. Gow is the son of David Gow, founder of Energy Capital's parent company, Gow Media.

Kelsey Kearns, who previously served as Director of Community Strategy at Greentown, was named as Gow's replacement in the Houston-focused role. As the new Head of Houston, she will lead daily operations, work to connect the city's climate and innovation ecosystem and founders, strengthen partnerships and accelerate solutions.

"I'm honored and grateful to step into this new role," Kearns said in an email. "My goal is for Greentown to thrive so our founders can thrive! That means supporting their connection to the capital, pilots, and customers they need to grow while building partnerships across Houston's innovation ecosystem. I want Greentown Houston to become the playbook for every future Greentown expansion."

Before joining Greentown Houston, Kearns served as director of business development at Howdy.com, an Austin-based technology staffing company.

"Kelsey is such a perfect fit to lead Greentown Houston," Gow added in an email. "She's deeply passionate about the entrepreneurial community here and has worked throughout and across the ecosystem for years. She's built an awesome dream team here and has helped reinvigorate Greentown's presence and role in Houston's innovation economy."

Earlier this year, Greentown also named Julia Travaglini as the Head of its Boston incubator. Travaglini has held multiple leadership roles at Greentown since 2016. The organization named Georgina Campbell Flatter as its new CEO in early 2025.

Texas sees 5th highest surge in gas prices in the U.S. since 2025

Pay at the Pump

Residents all around Texas are seeing soaring prices for regular and diesel fuel in 2026.

In fact, the Lone Star State has seen the fifth-highest percentage increase in gas prices in the country from April 2025 to April 2026, a just-released SmartAsset study has found. The current cost of a regular gallon of gas is 36.1 percent higher now than it was a year ago, and diesel is 60.9 percent more expensive.

The report, "Gas Prices Hit Records in 2026: State by State Breakdown," compared average gas prices from AAA from April 1, 2025 and April 1, 2026 and calculated the one-year change across all 50 states. The study looked at the price of a gallon of regular, premium, and diesel.

According to AAA, the cost of a regular gallon of gas in Texas at the start of April was $3.77, while premium is $4.62 per gallon. Diesel ticked over $5 a gallon — ouch — at $5.11.

Houston gas prices aren't much cheaper than the statewide average. A gallon of regular costs up to $3.76 at some Houston-area pumps, and diesel is $5.05 per gallon. AAA says the highest recorded average price for gas in the city was in June 2022, when a gallon of regular cost $4.68 and diesel cost $5.24.

Though Texas' gas prices are continuing to climb, it ranks 35th in the national ranking of states with the highest cost for regular gas as of April 2026. Texas' diesel prices are the 14th highest nationwide.

With the national average price for gas at $4.06, SmartAsset said the sudden surge in prices can be attributed to the United States' war on Iran, and "subsequent pressure on the Strait of Hormuz."

"Many states have experienced a 33 percent year-over-year increase in the cost of a gallon of regular gas – and in some places it’s even higher," the report's author wrote. "Commercial and public programs may be feeling similarly pinched, with diesel prices upwards of $6.00 per gallon in many states."

California currently has the highest average price for regular and diesel — $5.89 per gallon and $7.52 per gallon, respectively.

Arizona leads the nation with the highest one-year increase in gas prices. Regular gas in the Grand Canyon State is nearly 38 percent more expensive than it was last year, at $4.70 per gallon, and diesel is about 69 percent higher at $6.04 for a gallon.

The state with the cheapest gas prices in April is Oklahoma, where regular costs $3.27 per gallon, premium is $3.97, and diesel is $4.49.

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This article originally appeared on CultureMap.com.