Investment patterns in the energy storage sector are shifting decisively toward late-venture and early-growth opportunities—deals that prioritize scaling proven business models rather than backing untested chemistries or early-stage hardware innovations.
Even before the passage of the sweeping One Big Beautiful Bill (OBBA) reshaped U.S. clean energy policy, 2025 had already been a difficult year for storage hardware companies. High-profile collapses at former industry heavyweights such as Powin and Li-Cycle exposed how challenging it is for capital-intensive, hardware-first startups to stay solvent. For many investors, these failures were a stark reminder of the inherent risks tied to funding expensive manufacturing technologies.
Against that backdrop, investors are reassessing where—and how—they deploy money. “We’re taking execution risks, not technology risks or product-market fit risks,” said Bala Nagarajan, managing director on the energy investment team at S2G Investments, in an interview with ESS News. He noted that uncertain regulation and a slowdown in federal funding have made early-stage hardware bets even harder to justify, given the number of external variables that can derail commercialization.
Still, Nagarajan emphasized that strong companies with sound economics can attract capital even in a difficult environment. He said he has seen storage startups raise substantial funding rounds despite their high capital requirements. “There’s an incredible amount of dry powder waiting to be deployed across infrastructure,” he said. “There’s no dearth of capital.”
However, he was careful to draw a line around what traditional venture capital is equipped to handle. The VC model, he argued, is built to support low-CapEx companies capable of delivering outsized returns. Many hardware-centric storage businesses simply aren’t structured to fit that mold. High upfront costs extend timelines for commercialization, slowing the path to meaningful scale. In earlier years, government agencies helped bridge that gap with “first-of-a-kind” financing that absorbed some technology risk for novel energy storage solutions.
Today, the landscape looks different. While government support is still possible, Nagarajan said the first-money-in could just as easily come from philanthropic investors, corporate capital, or private funders willing to provide what he described as a form of concessionary capital. The challenge, he said, is that although many groups are interested in supporting breakthrough technologies, their ability to underwrite the underlying risks hasn’t kept pace.
For entrepreneurs, that means carefully matching their stage of development with the right investor base. According to Nagarajan, this helps explain why storage-related software companies—such as firms optimizing battery performance—have gained traction. Software has long delivered strong returns both inside and outside the climate sector, and its relatively light capital requirements make it a natural fit for venture investors.
“That’s not to say software is the only winning solution,” Nagarajan added. Hardware may take longer to scale, but the energy transition can’t happen without it. Even so, investment decisions remain deeply tied to cost and risk: “Risk is a function of the price you pay, and we’ve seen plenty of investment flow into software.”
The shift in investment behavior reflects a broader recalibration within the energy storage market—one that is increasingly influential across the Energy News landscape as capital providers balance ambition for breakthrough technology with the realities of scaling it.