The politicians point to a recent Texas merger. Photo via Getty Images

Senate Majority Leader Chuck Schumer and 22 other Democratic senators are calling on the Department of Justice to “use every tool” at its disposal to prevent and prosecute alleged collusion and price-fixing in the oil industry.

In a letter Thursday to Attorney General Merrick Garland and other officials, the Democrats said a recent Federal Trade Commission investigation into a high-profile merger uncovered evidence of price-fixing by oil executives that led to higher energy costs for American families and businesses.

The FTC said earlier this month that Scott Sheffield, the former CEO of Texas-based Pioneer Natural Resources, colluded with OPEC and OPEC+ to potentially raise crude oil prices. Sheffield retired from the company in 2016 but returned as CEO in 2019. After retiring again in 2023, he continued to serve on its board.

The FTC cleared Houston-based ExxonMobil's $60 billion deal to buy Pioneer on May 2 but barred Sheffield from joining the new company’s board of directors. Pioneer, which is based in Dallas, said it disagreed with the allegations but would not impede closing of the merger, which was announced in 2023.

In a report, the FTC said collusion by Pioneer and others may have cost the average American household up to $500 per car in increased annual fuel costs, an amount Democrats called “an unwelcome tax that is particularly burdensome for lower-income families.'' Meanwhile, Exxon Mobil and other major oil companies collectively earned more than $300 billion in profits over the last two years, "a surge that many market experts believe cannot be explained away by increased production costs from the (coronavirus) pandemic or inflation,” Democrats said.

The letter calls for the Justice Department to launch an industry-wide investigation into possible violations of the Sherman Antitrust Act. It outlined how “Big Oil’s alleged collusion with OPEC is a national security concern that aids countries looking to undermine the U.S.," including Russia and Iran.

“Corporate malfeasance must be confronted, or it will proliferate," the letter said. “These alleged offenses do not simply enrich corporations; hardworking Americans end up paying the price through higher costs for gas, fuel and related consumer products. The DOJ must protect consumers, small businesses and the public from petroleum-market collusion."

The letter by Senate Democrats was the latest in a series of partisan actions targeting the oil industry.

Separately, Democratic Sen. Sheldon Whitehouse of Rhode Island and Democratic Rep. Jamie Raskin of Maryland have formally asked the Justice Department to investigate whether Exxon, Chevron and other oil companies misled the public over decades about the climate effects of burning fossil fuels. Whitehouse and Raskin led a multiyear investigation that uncovered what they described as “damning new documents that exposed the fossil fuel industry’s ongoing efforts to deceive the public and block climate action.”

Republicans, meanwhile, have attacked President Joe Biden's energy policies, including a freeze on liquefied natural gas exports, restrictions on new oil and gas leasing on a petroleum reserve in Alaska and a decision to charge companies higher rates to drill for oil and natural gas on federal lands.

Sen. John Barrasso, the top Republican on the Senate Energy Committee, said the Democratic president was “doing all he can to make it economically impossible to produce energy on federal lands.''

The letter released Thursday was signed by 23 Democrats, including Schumer, Whitehouse, Senate Commerce Committee Chairwoman Maria Cantwell of Washington state and Senate Judiciary Committee Chairman Dick Durbin of Illinois.

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Houston geothermal company raises $97M Series B

fresh funding

Houston-based geothermal energy startup Sage Geosystems has closed its Series B fundraising round and plans to use the money to launch its first commercial next-generation geothermal power generation facility.

Ormat Technologies and Carbon Direct Capital co-led the $97 million round, according to a press release from Sage. Existing investors Exa, Nabors, alfa8, Arch Meredith, Abilene Partners, Cubit Capital and Ignis H2 Energy also participated, as well as new investors SiteGround Capital and The UC Berkeley Foundation’s Climate Solutions Fund.

The new geothermal power generation facility will be located at one of Ormat Technologies' existing power plants. The Nevada-based company has geothermal power projects in the U.S. and numerous other countries around the world. The facility will use Sage’s proprietary pressure geothermal technology, which extracts geothermal heat energy from hot dry rock, an abundant geothermal resource.

“Pressure geothermal is designed to be commercial, scalable and deployable almost anywhere,” Cindy Taff, CEO of Sage Geosystems, said in the news release. “This Series B allows us to prove that at commercial scale, reflecting strong conviction from partners who understand both the urgency of energy demand and the criticality of firm power.”

Sage reports that partnering with the Ormat facility will allow it to market and scale up its pressure geothermal technology at a faster rate.

“This investment builds on the strong foundation we’ve established through our commercial agreement and reinforces Ormat’s commitment to accelerating geothermal development,” Doron Blachar, CEO of Ormat Technologies, added in the release. “Sage’s technical expertise and innovative approach are well aligned with Ormat’s strategy to move faster from concept to commercialization. We’re pleased to take this natural next step in a partnership we believe strongly in.”

In 2024, Sage agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta, the parent company of Facebook. At the time, the companies reported that the project's first phase would aim to be operating in 2027.

The company also raised a $17 million Series A, led by Chesapeake Energy Corp., in 2024.

Houston expert discusses the clean energy founder's paradox

Guest Column

Everyone tells you to move fast and break things. In clean energy, moving fast without structural integrity means breaking the only planet we’ve got. This is the founder's paradox: you are building a company in an industry where the stakes are existential, the timelines are glacial, and the capital requires patience.

The myth of the lone genius in a garage doesn’t really apply here. Clean energy startups aren’t just fighting competitors. They are fighting physics, policy, and decades of existing infrastructure. This isn’t an app. You’re building something physical that has to work in the real world. It has to be cheaper, more reliable, and clearly better than fossil fuels. Being “green” alone isn’t enough. Scale is what matters.

Your biggest risks aren’t competitors. They’re interconnection delays, permitting timelines, supply chain fragility, and whether your first customer is willing to underwrite something that hasn’t been done before.

That reality creates a brutal filter. Successful founders in this space need deep technical knowledge and the ability to execute. You need to understand engineering, navigate regulation, and think in terms of markets and risk. You’re not just selling a product. You’re selling a future where your solution becomes the obvious choice. That means connecting short-term financial returns with long-term system change.

The capital is there, but it’s smarter and more demanding. Investors today have PhDs in electrochemistry and grid dynamics. They’ve been burned by promises of miracle materials that never left the lab. They don't fund visions; they fund pathways to impact that can scale and make financial sense. Your roadmap must show not just a brilliant invention, but a clear, believable plan to drive costs down over time.

Capital in this sector isn’t impressed by ambition alone. It wants evidence that risk is being retired in the right order — even if that means slower growth early.

Here’s the upside. The difficulty of clean energy is also its strength. If you succeed, your advantage isn’t just in software or branding. It’s in hardware, supply chains, approvals, and years of hard work that others can’t easily copy. Your real competitors aren’t other startups. They’re inertia and the existing system. Winning here isn’t zero-sum. When one solution scales, it helps the entire market grow.

So, to the founder in the lab, or running field tests at a remote site: your pace will feel slow. The validation cycles are long. But you are building in the physical world. When you succeed, you don’t have an exit. You have a foundation. You don't just have customers; you have converts. And the product you ship doesn't just generate revenue; it creates a legacy.

If your timelines feel uncomfortable compared to software, that’s because you’re operating inside a system designed to resist change. And let’s not forget you are building actual physical products that interact with a complex world. Times are tough. Don’t give up. We need you.

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Nada Ahmed is the founding partner at Houston-based Energy Tech Nexus.

Houston maritime startup raises $43M to electrify cargo vessels

A Houston-based maritime technology company that is working to reduce emissions in the cargo and shipping industry has raised VC funding and opened a new Houston headquarters.

Fleetzero announced that it closed a $43 million Series A financing round this month led by Obvious Ventures with participation from Maersk Growth, Breakthrough Energy Ventures, 8090 Industries, Y Combinator, Shorewind, Benson Capital and others. The funding will go toward expanding manufacturing of its Leviathan hybrid and electric marine propulsion system, according to a news release.

The technology is optimized for high-energy and zero-emission operation of large vessels. It uses EV technology but is built for maritime environments and can be used on new or existing ships with hybrid or all-electric functions, according to Fleetzero's website. The propulsion system was retrofitted and tested on Fleetzero’s test ship, the Pacific Joule, and has been deployed globally on commercial vessels.

Fleetzero is also developing unmanned cargo vessel technology.

"Fleetzero is making robotic ships a reality today. The team is moving us from dirty, dangerous, and expensive to clean, safe, and cost-effective. It's like watching the future today," Andrew Beebe, managing director at Obvious Ventures, said in the news release. "We backed the team because they are mariners and engineers, know the industry deeply, and are scaling with real ships and customers, not just renderings."

Fleetzero also announced that it has opened a new manufacturing and research and development facility, which will serve as the company's new headquarters. The facility features a marine robotics and autonomy lab, a marine propulsion R&D center and a production line with a capacity of 300 megawatt-hours per year. The company reports that it plans to increase production to three gigawatt-hours per year over the next five years.

"Houston has the people who know how to build and operate big hardware–ships, rigs, refineries and power systems," Mike Carter, co-founder and COO of Fleetzero, added in the release. "We're pairing that industrial DNA with modern batteries, autonomy, and software to bring back shipbuilding to the U.S."