ready to grow

Houston carbon storage solutions company names new energy transition leader at pivotal time of growth

Graham Payne, the new director of energy transition at Caliche Development Partners II, is bullish on Houston. Photo courtesy

Graham Payne sees a bright future for the multibillion-dollar energy transition economy in Houston.

“It’s been said that Houston is poised, like no other city, to lead the energy transition. And I’d have to agree, because we have all the requisite natural resources, industry, and talent,” says Payne, the new director of energy transition at Houston-based carbon capture, utilization, and storage (CCUS) company Caliche Development Partners II.

Caliche and other Houston-based energy transition companies secured $6.1 billion in private funding last year, up 62 percent from 2022, according to the Greater Houston Partnership.

“As the region positions itself as the leader in the global energy transition, Houston has seen constant growth in annual energy transition investments over the last five years,” the partnership says.

Payne, a geologist, comes to Caliche after holding roles at Battelle and Schlumberger, among other companies. Houston-based Sudduth Search recruited Payne for the Caliche job.

In his new position, Payne is overseeing permitting and completion of a leased 4,000-acre site in Beaumont for sequestration of carbon dioxide. Payne will also work on current and potential gas storage projects, which he says “will continue to play an important role in the energy mix.”

At previous employers, Payne has tackled various aspects of CCUS.

“The really enticing part about this job is the chance to put it all together, and then operate a full-scale operation,” he says. “I want this technology to move firmly out of the research phase and start making a measurable difference against climate change.”

Payne says Caliche is capable of successfully straddling the worlds of CCUS, natural gas storage, and industrial gas storage. The Beaumont project alone will be able sequester at least 30 million metric tons of carbon, a Caliche estimate indicates.

In November, Caliche announced the acquisition of its first CCUS assets, Golden Triangle Storage and Central Valley Gas Storage, following a $268 million infusion of capital from Orion Infrastructure Capital and GCM Grosvenor. Orion maintains offices in Houston, New York City, and London. GCM is based in Chicago.

The Golden Triangle and Central Valley deals were valued at a combined $186 million.

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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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