Energy Storage Funding Reaches $2.3 Billion In Q1 2026

A new Mercom report shows steady growth in energy storage funding, with M&A activity accelerating and smart grid financing surging

Energy storage attracted strong investor interest in Q1 2026, driven by rising electricity demand, renewable energy integration, and grid modernization needs, according to Mercom. (Photo Credit: Mercom Capital Group)

Published on:

Jun 01, 2026, 1:51 pm

Key Takeaways

Mercom says energy storage funding in Q1 2025 increased 5% YoY to $2.3 billion across 38 deals
Energy storage M&A activity accelerated during the quarter, with project acquisitions rising 227% to 7.2 GW
Smart grid funding also jumped 115% YoY to $1.1 billion, driven by growing investment in grid optimization and stability technologies

Corporate funding for energy storage companies rose 5% year-on-year (YoY) to $2.3 billion across 38 deals in Q1 of 2026, according to a new report by Mercom Capital Group.

The funding, which includes venture capital (VC), debt, and public market financing, increased from $2.2 billion raised through 31 deals in Q1 2025 as greater policy and incentive clarity emerged.

According to the report titled Q1 2026 Funding and M&A Report for Energy Storage, VC investments accounted for $1.2 billion across 26 deals, up 9% YoY, while deal volume jumped 44%. Downstream energy storage companies, like their counterparts in the solar space, attracted the highest VC funding, followed by firms focused on metal-hydrogen batteries, lithium-based batteries, energy storage systems (ESS), materials and components, and battery recycling.

The largest energy storage VC deals during the quarter included funding rounds by EnerVenue Holdings ($300 million), terralayr ($223 million), Liminal Energy ($200 million), Waaree Energy Storage Solutions ($111 million), and Lunar Energy ($102 million).

Mercom CEO Raj Prabhu also attributes the growth to rising demand for solar-plus-storage projects driven by AI, data centers, and energy security concerns stemming from the US-Iran conflict, which supported investor interest in the sector. “The quickest way to install power generation currently is through solar power, along with battery storage. So, there are strong demand factors recognized by investors, which are reflected in higher funding activity for storage, especially in Q1,” stated Prabhu.

Mergers and acquisitions (M&A) activity also strengthened, with 7 energy storage companies acquired in Q1 2026 compared to 1 a year earlier. Storage project acquisitions reached 7.2 GW, a 227% increase from 2.2 GW in Q1 2025, reflecting growing demand for advanced-stage and operational projects. Prabhu lists the US federal government’s July 4, 2026, deadline to qualify for clean electricity tax credits as boosting project funding and construction.

Announced debt and public-market financing for the sector totaled $1.1 billion across 12 deals, representing a 3% YoY decline.

The complete report can be purchased on Mercom’s website.

In a separate report on Smart Grid funding, Mercom estimates corporate funding to have surged 115% YoY to $1.1 billion across 16 deals. Prabhu said investor interest in smart grid technologies is expanding beyond EV charging to solutions that improve grid stability and integration of renewable energy. He expects the trend to continue as electricity demand from AI and data centers grows.

Battery Energy Storage Systems (BESS)