What are the funding trends in grid-scale battery storage?

All funding deals in the grid-scale battery storage market over the last years

Below is the table listing all the deals. You can find our methodology at the end of this page.

If you want a deeper understanding of the market and its current dynamics, get our report covering the grid-scale battery storage market.

Is grid-scale battery storage funding actually booming in 2026?

Grid-scale battery storage funding is up sharply in 2026, but fewer companies are getting funded than last year.

We recorded $2.15 billion in financing through September 22, compared with $740.83 million during the same period in 2025. That's a 189.8% increase. Yet the number of deals fell from 26 to 21, and the number of funded companies dropped from 26 to 20.

The real change is the size of the checks. The median financing jumped from $9.5 million to $40.95 million, more than quadrupling in a year. The average reached $107.36 million, compared with $35.28 million previously.

The 2024 comparison tells a similar story. That year saw 16 deals and $768.06 million in funding over the same period, with a median round of $18.3 million. The market has had years with fewer deals before, but the size of 2026's typical financing stands out.

These figures include certain infrastructure-equity investments alongside conventional venture rounds. We also separated fixed financing amounts from maximum commitments that might never be fully drawn. That distinction becomes particularly important when comparing this year's totals with 2025.

Metric	2026 YTD	2025 YTD	2024 YTD
Funding deals	21	26	16
Funded companies	20	26	16
Quantified capital	$2,147.14M	$740.83M	$768.06M
Median round	$40.95M	$9.50M	$18.30M
Average quantified round	$107.36M	$35.28M	$51.20M
Largest round	$750M	$411M	$308.15M
Rounds above $50M	8	3	3
Rounds above $100M	5	1	2
First-financing share	14.3%	34.6%	12.5%

Would battery storage funding still be growing without the biggest deals?

Yes, battery storage funding is still growing after removing the biggest rounds, although the increase becomes much smaller.

Excluding financings above $50 million leaves $208.44 million in 2026, versus $167.83 million in 2025. That's 24.2% growth, compared with 189.8% when all quantified rounds are included.

Removing only rounds above $100 million produces a similar result: $436.14 million this year versus $329.83 million last year, up 32.2%.

We also calculated how much capital went to the largest recipients. The top five financings accounted for 79.7% of all quantified funding in 2026. Interestingly, that's slightly less concentrated than in 2025, when the top five represented 82.8%.

Eight financings exceeded $50 million in 2026, compared with three a year earlier. So more companies are securing very large amounts, even though fewer companies are raising overall.

The smaller-deal market has grown in dollars, too. But the strongest growth is happening among companies able to raise tens or hundreds of millions at once.

Which battery storage companies are raising the most money?

Form Energy is the biggest battery storage fundraising winner in 2026, with several other established manufacturers and infrastructure businesses also securing nine-figure financings.

Form Energy announced a $750 million Series G led by T. Rowe Price. The company makes iron-air batteries designed to store electricity for multiple days, and the capital is intended to expand manufacturing and support commercial deployment.

EnerVenue raised $300 million through an extension of its Series B, led by Full Vision Capital. Frontier Power USA closed approximately $263 million backed by Cerberus Capital Management, Eos Energy Enterprises and Hudson Bay Capital Management. Its financing supports the development of storage projects, including the 800 MWh Blanquilla project.

European battery-storage operator terralayr also secured $130 million in growth capital.

SMT Energy announced a partnership worth up to $268 million with Climate Adaptive Infrastructure. That amount is a maximum equity commitment rather than a confirmed fully funded cash investment, which is why we treat it separately from quantified financing.

The companies have different business models. Form Energy and EnerVenue are scaling battery technology, while Frontier Power and SMT Energy are financing storage infrastructure. All require large amounts of capital to expand beyond the early stages of development.

Company	2026 financing	Main business
Form Energy	$750M	Long-duration battery manufacturing
EnerVenue	$300M	Battery technology and manufacturing
Frontier Power USA	$263M	Storage project development
terralayr	$130M	Storage asset ownership and operation
SMT Energy	Up to $268M	Storage development and asset ownership

SMT Energy's figure is shown for context but is excluded from the quantified-capital ranking because it represents a commitment ceiling.

Are smaller battery storage startups getting left behind?

Smaller battery storage financings have become noticeably less common, especially in the $5 million to $20 million range.

We counted just eight quantified rounds below $20 million in 2026, compared with 16 in 2025. Deals between $5 million and $20 million fell from 12 to five.

This middle range deserves attention because it can finance the expensive period between developing a working battery technology and building a larger commercial operation.

A $10 million round might be enough for engineering development, certifications, pilot installations or a small manufacturing expansion. It generally cannot finance the kind of industrial scale-up Form Energy and EnerVenue are pursuing.

Meanwhile, the number of financings above $50 million rose from three to eight.

We can't establish from these figures alone whether smaller companies faced more rejections, postponed fundraising or found other ways to finance themselves. What we can establish is that the recorded market completed substantially fewer moderate-sized rounds.

Why are battery storage companies suddenly raising hundreds of millions?

Battery storage companies are raising much larger amounts because manufacturing and deploying grid-scale batteries requires serious infrastructure investment, and commercial demand is growing.

Form Energy offers a concrete example. Its latest equity round supports the expansion of iron-air battery manufacturing and commercial deployments. The company also announced a separate $270 million credit facility to finance working capital and production growth.

That credit facility is debt, so we don't add it to the equity funding total. But it shows how much financing an industrial battery business can need.

There's also a substantial demand backdrop. The U.S. Energy Information Administration projected in February 2026 that developers would add 24 GW of utility-scale battery storage capacity during the year, compared with 15 GW added in 2025. Texas, California and Arizona accounted for approximately 80% of the planned additions.

Globally, the International Energy Agency reported that 108 GW of new battery capacity was deployed in 2025, up 40% from 2024. Falling battery costs, expanding renewable generation and growing demand for grid flexibility are helping storage become a mainstream electricity infrastructure category.

Those trends don't explain every investment decision, but they provide context for the size of the latest rounds. Building factories and developing utility-scale storage projects takes hundreds of millions, sometimes before the assets start generating revenue.

Is battery manufacturing becoming the hottest part of grid storage?

Battery manufacturing has made a strong comeback in fundraising activity, although one company accounts for most of its dollar growth.

Battery Cells & Modules recorded seven deals in 2026, compared with just three in 2025. Its share of all funding transactions rose from 11.5% to 33.3%, making it the busiest category in our current sample.

Funding increased from $30 million to $424.64 million. EnerVenue alone contributed $300 million, or approximately 70.6% of the category's quantified total. The other six recorded rounds accounted for $124.64 million in quantified financing.

Form Energy's $750 million round is classified separately under Containerized BESS Systems in our database, rather than Battery Cells & Modules. The categories reflect each financing's assigned primary business category, even when the companies operate across several parts of the battery value chain.

The historical comparison is useful here: battery cells also recorded seven deals in 2024. The current recovery brings the number of financings back to that level, but at much larger dollar amounts.

There's a commercial reason investors continue exploring alternative battery technologies. The IEA's 2026 electricity analysis describes expanding utility-scale storage installations and growing demand for batteries with longer discharge durations. Technologies designed for different durations, operating conditions and cost structures have opportunities to serve different parts of that demand.

The recovery in deal activity is broader than EnerVenue, although that one financing still dominates the category's dollar growth.

Are investors getting more interested in owning battery storage assets?

Yes, companies that own and operate battery storage assets are attracting more funding, and this is one of the clearest multi-year trends in the market.

Asset Ownership & Operation recorded one financing in 2024, three in 2025 and five in 2026. Its share of deals increased from 11.5% last year to 23.8% this year.

Quantified funding reached $541.4 million, compared with $109.6 million in the previous comparable period.

The appeal comes from the way storage businesses can make money. Once batteries are operating, their owners can generate revenue through electricity trading, grid-balancing services and other energy-market arrangements. Investors can evaluate potential cash flows from physical assets rather than relying entirely on future technology sales.

SMT Energy shows how this can work. Its partnership with Climate Adaptive Infrastructure is intended to finance a portfolio of U.S. storage projects using a combination of corporate equity, project-level debt and other capital sources. Its maximum $268 million commitment is not treated as fully invested cash in our quantified totals.

The IEA has also highlighted growing utility-scale battery deployment, while warning that grid connections, permitting delays and uncertain revenue streams remain obstacles.

Asset ownership's steady increase in deal count is particularly interesting because it has continued across all three comparable periods, unlike several other categories where activity has fluctuated.

Which battery storage businesses are losing investors?

Battery storage project developers and system integrators are receiving fewer recorded financings in 2026, while manufacturers and asset owners are taking a larger share.

Project Development fell from six deals in 2025 to just one this year. BESS System Integration dropped from six deals to three.

The project-development decline is striking because this category previously attracted some very large commitments. Eelpower's 2025 arrangement was worth up to $675 million, and Fidra's was worth up to $603 million. Neither maximum was included in our quantified-capital baseline.

That makes the reduction in deal count easier to establish than a decline in actual investment dollars.

Containerized BESS Systems shows the opposite pattern. Its deal count dropped from four to one, yet quantified funding reached $750 million because of Form Energy. Looking only at dollars would suggest explosive growth in a category with just one recorded financing.

Market Trading & Optimization remained comparatively stable, with three deals in 2026 against four in 2025. Its funding increased from $28.13 million to $86.1 million.

The categories below are mutually exclusive primary classifications. Together, the seven categories account for all 21 recorded 2026 deals and $2,147.14 million in quantified financing.

Category	Deals 2026	Deals 2025	Deals 2024	2026 capital
Battery Cells & Modules	7	3	7	$424.64M
Asset Ownership & Operation	5	3	1	$541.40M
Market Trading & Optimization	3	4	2	$86.10M
BESS System Integration	3	6	1	$75.00M
Project Development	1	6	3	$263.00M
Containerized BESS Systems	1	4	2	$750.00M
Energy Management Software	1	0	0	$7.00M
Total	21	26	16	$2,147.14M

The decline in project-development and system-integration fundraising is clear in the deal counts. Whether it reflects weaker investor demand, different financing structures or a temporary gap between large transactions is harder to determine.

Are early-stage battery storage startups having a harder time raising money?

Early-stage battery storage startups are getting fewer rounds than last year, while later-stage companies are holding up much better.

Seed and Series A financings declined from 17 to 12. Their combined share of the market fell from 65.4% to 57.1%, below the 62.5% recorded in 2024.

Seed rounds decreased from eight to six, while Series A dropped from nine to six.

Later-stage deal volume, meanwhile, stayed at seven in both 2025 and 2026. Its market share increased because fewer early-stage financings took place.

We also examined company ages. The median funded business was four years old in 2026, compared with three years in 2025. Seed-funded companies were older on average by this measure, with a median age of 3.5 years versus 1.5 years previously. However, Series A recipients were younger, so the age data doesn't show a uniform trend toward later fundraising.

Early-stage activity has contracted, while established companies continue securing large amounts of money. That's the clearest split in the current financing market.

Are battery storage investors abandoning new startups for existing winners?

Battery storage investors are putting much more money into companies they've already financed, and first-time funding recipients have become less common.

Only three companies received their first recorded financing in 2026, compared with nine in 2025. Follow-on rounds accounted for 18 of the year's 21 transactions.

Those follow-ons represented approximately $1.87 billion in quantified funding. First financings accounted for $273.5 million.

The longer history prevents us from calling this a permanent retreat from new businesses.

In 2024, first financings accounted for just 12.5% of recorded deals, compared with 14.3% in 2026. The unusually high 34.6% share in 2025 may have represented a temporary increase in newly financed companies.

Our first-financing classification is based on identifiable funding history rather than exhaustive records of every earlier investment. Some businesses may have obtained capital through sources that weren't publicly reported.

Still, the amount going into follow-on rounds is striking. Most of the money is reaching businesses that have already passed at least one fundraising milestone.

Is North America taking over battery storage funding?

North America now attracts most of the recorded grid-scale battery storage funding, although European companies still complete more deals.

North American businesses secured approximately $1.69 billion in 2026, or 78.5% of quantified capital. The region accounted for seven transactions.

Europe recorded 11 financings, representing 52.4% of the market, but attracted $387.39 million. Asia-Pacific accounted for three deals and $73.75 million in quantified funding.

The American funding advantage is closely tied to Form Energy, EnerVenue and Frontier Power USA, all of which completed exceptionally large rounds.

Europe's position looks different when measured by activity rather than dollar totals. Its deal share declined by only 1.5 percentage points from 2025, despite a sharp decrease in its share of measured capital.

Asia-Pacific's deal count fell from eight to three, a more noticeable decline. Some financing amounts in the region were also undisclosed, which limits the reliability of capital comparisons.

The unusual European commitments recorded in 2025 also affect the apparent regional shift. Including their maximum announced values would produce a very different comparison, even though it wouldn't represent confirmed funded cash.

For now, North America is where the largest battery storage financings are concentrated, while Europe continues to support more individual transactions.

Are corporate investors becoming more active in battery storage?

Corporate investors are appearing in a larger share of grid-scale battery storage deals, particularly around industrial battery technologies.

We identified named strategic investors in eight of 21 financings in 2026, compared with seven of 26 in 2025. Their participation rate increased from 26.9% to 38.1%.

GE Vernova participated in Form Energy's financing. Samsung Ventures and STRABAG were among the investors associated with CMBlu, while Centrica and Ceres Power appeared at Certain Energy. LG Technology Ventures was also recorded at Powerline.

These investors have business interests connected to power generation, industrial equipment, battery manufacturing or energy infrastructure. They have commercial reasons to follow storage technology beyond the potential financial return.

The broader lead-investor picture has also changed. T. Rowe Price, Full Vision Capital, Cerberus Capital Management and Heartcore Capital were among the prominent investors in recorded 2026 transactions.

Sixteen deals disclosed a lead investor in both 2025 and 2026, even though the total number of transactions declined. The number of identifiable lead-backed deals therefore remained stable.

A corporate investment alone doesn't establish a customer relationship or commercial agreement. But the growing proportion of deals involving industrial investors is worth watching, particularly as battery companies move into manufacturing and deployment.

Has 2026 already broken the battery storage funding record?

Grid-scale battery storage has already surpassed the previous two full-year totals in quantified funding, even though the current comparison ends in September.

The $2.15 billion recorded in 2026 is equivalent to 151.6% of the $1.42 billion raised throughout 2025. It also exceeds the $1.30 billion recorded across all of 2024.

Deal volume is less impressive. The market recorded 21 transactions during the current partial year, compared with 37 throughout 2025 and 25 throughout 2024.

There is also an accounting issue that affects the size of the funding record.

Eelpower and Fidra announced arrangements with maximum values of $675 million and $603 million in 2025. Adding those two ceilings to the quantified 2025 comparable-period total would produce approximately $2.02 billion, much closer to 2026's $2.15 billion.

That wouldn't be a fair comparison of funded cash, since maximum commitments aren't necessarily fully deployed. It does show how much the apparent record depends on the financing instruments included.

The current year has clearly been exceptional for the size of recorded transactions. A claim that almost three times as much cash has actually entered the industry would go beyond what the available figures establish.

Is battery storage funding becoming a winner-takes-most market?

Battery storage funding is favoring established companies capable of building factories, financing assets and deploying projects at scale. But the concentration figures tell a more complicated story.

The median financing has more than quadrupled, large rounds have become much more common, and follow-on recipients account for most of the money raised. Smaller financings and first-time funding recipients are both less common.

Yet the five largest rounds accounted for 79.7% of quantified capital, slightly below last year's 82.8%. Asset ownership is also attracting funding across a growing number of businesses. The market is becoming more selective without becoming more concentrated by every measure.

The biggest divide is between companies financing early battery development and those already raising industrial-scale capital. Form Energy and EnerVenue illustrate just how large that gap has become.

What is actually changing in funding?

The biggest development is the move toward financing industrial businesses and operating electricity infrastructure. Battery manufacturers and asset owners are raising much larger amounts, while smaller technology rounds and first-time financings have lost ground.

That shift could accelerate commercial deployment, but the amount raised is only one part of the story. The next useful measures will be factories brought into production, megawatt-hours of batteries commissioned and revenue generated by operating storage assets.

2026 has established a new benchmark for the size of quantified battery storage financings. Whether it also marks a lasting change in the industry's commercial scale remains to be seen.