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Daikin completes solar plant to power massive Houston-area campus

Daikin Industries' new solar power plant at its Waller-area campus will power its central chiller plant and is designed to connect to the campus' electric grid. Photo courtesy Daikin.

Japanese HVAC company Daikin Industries has completed a nearly one-megawatt solar power plant at its Daikin Comfort Technologies North America campus southeast of Waller.

Daikin says the new plant at its 4.2 million-square-foot Daikin Texas Technology Park will eliminate an estimated 845 metric tons of carbon emissions each year. The park houses the largest HVAC factory in North America.

“Daikin’s unwavering commitment to innovation drives us to continually perfect the air we share. With the launch of this solar project, we’re one step closer to being a net-zero CO2 emission factory by 2030,” Nathan Walker, senior vice president of environmental business development of locally based Daikin Comfort Technologies North America, said in a release. “This installation is a significant step in reducing our carbon footprint and underscores our commitment to energy efficiency, sustainability, and environmental stewardship.”

Solar power from the new facility will power the Daikin campus’ central chiller plant, which circulates about 125,000 gallons of chilled water annually and 75,000 gallons of hot water in the winter. Also, the solar setup is designed to connect to the electric grid that serves the campus. About 10,000 people work at the campus.

Daikin, a Fortune 1000 company, may not have been a familiar name to some Houstonians until January, when it took over the naming rights for the Houston Astros’ stadium. The naming rights agreement for Daikin Park, formerly Minute Maid Park, expires during the Astros’ 2039 season. The stadium had been named Minute Maid Park since 2002.

“The Astros are the pride of Houston, an organization that has built resiliency in hard times, and have succeeded to be a winning team. The coming together of both our organizations is a symbol of our love for our hometown and the communities of the Greater Houston area,” Takayuki “Taka” Inoue, executive vice president and chief sales and marketing officer at Daikin Comfort Technologies North America, said in November.

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A View From HETI

Amperon, Hertha Metals and Vaulted Deep were named to this year's Global Cleantech 100 list. Photo via Getty Images

Three Houston-area companies—Amperon, Hertha Metals and Vaulted Deep—appear on this year’s Global Cleantech 100 list.

The unranked list, generated by market intelligence and advisory firm Cleantech Group, identifies the 100 privately held companies around the world that are most likely to make a significant impact in the cleantech market over the next five to 10 years.

For the 2026 list, Cleantech Group received more than 24,000 Global Cleantech 100 nominations from nearly 60 countries. Cleantech Group scored those companies and narrowed the contenders to 264. An expert panel reviewed those nominees, and the list was whittled down to the 100 winners.

Here’s a rundown of the three Houston-area honorees:

Amperon

Founded in 2018 by Sean Kelly and Abe Stanway, Houston-based Amperon offers an AI-enabled energy forecasting and analytics platform designed to help stabilize electric grids. Amperon received undisclosed amounts of venture capital from National Grid Partners and Tokyo Gas Co. Ltd. last year and announced a recent investment from Samsung Ventures earlier this month.

Hertha Metals

Founded in 2022 by Laureen Meroueh, Conroe-based Hertha Metals provides a single-step process for producing sustainable steel. Last year, the company emerged from stealth mode and raised more than $17 million in venture capital.

Vaulted Deep

Vaulted Deep’s technology injects excess organic waste underground to remove carbon dioxide from the atmosphere. Julia Reichelstein and Omar Abou-Sayed founded the Houston-based company in 2023. Last year, the startup raised $32.3 million in venture capital. Also in 2025, Vaulted Deep signed a 12-year deal with software giant Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

Vaulted Deep also made the list last year, along with Houston-based Syzygy Plasmonics and Fervo Energy. Fervo was also named the 2025 North American Company of the Year by Cleantech Group.

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