Dyson leads increased VC energy storage investment

LinkedIn
Twitter
Reddit
Facebook
Email

Mercom Capital has issued its findings from the battery and storage, smart grid and energy efficiency sectors. Image: Fraunhofer ISE.
Investment by UK tech entrepreneur and inventor James Dyson into battery company Sakti3 was among the biggest deals in the sector in the first quarter of this year, a new report has found.

Texas-headquartered consultancy Mercom Capital, this week issued the “Smart Grid, Battery/Storage, Efficiency Funding and M&A” report for Q1 2015.

Dyson is thought to have contributed a significant portion of Sakti3’s US$20 million March funding round, helping to drive venture capital (VC) investment into the battery and storage sector up by almost 50% on the final quarter of last year. In Q4 2014, Mercom reported, US$47 million was invested from VC sources, while the first quarter of 2015 saw US$69 million invested across seven VC deals, up by US$22 million, despite there being the same number of high profile deals in each quarter.

Sakti3 is looking to commercialise solid-state lithium-ion battery technology in a number of sectors, claiming its production processes can speed up the scaled manufacture of batteries. The Michigan start-up in which Dyson and others including Japan’s Itochu have taken a direct interest, appears to currently be focusing on batteries for EVs but according to various reports the company also sees potential for its products in stationary storage applications.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The other biggest VC deal in the sector last quarter was another US$20 million raised by Boston Power, another US company making lithium-ion batteries. Meanwhile EOS Energy Storage, which develops and makes zinc hybrid cathode energy storage systems, was the recipient of US$15 million.

Mercom Capital CEO Raj Prabhu told PV Tech Storage yesterday that among the few notable mergers and acquisitions (M&A) to be disclosed in the timescale covered by the report was the acquisition of Solar Grid Storage, a utility-scale storage start-up, by the world’s largest renewable energy developer, SunEdison. Solar Grid Storage is currently active in the noted frequency regulation market offered in the service area of mid-Western US utility company PJM. In essence, the PJM market recognises and rewards the value of fast-responding frequency regulation.

The sale of Polypore International, a maker of microporous membranes for energy storage, as well as membranes for filtration in other industries including healthcare, raised US$2.2 billion in one of the other disclosed M&A deals of the quarter.

Elsewhere, solid oxide fuel cell maker Bloom Energy raised US$130 million in the only debt and public market financing deal of the quarter.

Q1 2015’s top 5 VC-funded battery/storage companies, as highlighted by Mercom. Image: Mercom.

8 September 2026
Barcelona, Spain
Battery & Energy Storage Tech Europe (BESTE) is Europe’s industrial scaling platform for stationary and industrial battery applications — not EVs. Taking place 8–9 September 2026 at Fira de Barcelona, BESTE brings together utilities, IPPs, energy-intensive industries, data centres, ports, rail, maritime, defence and aerospace OEMs — all deploying or integrating battery storage at scale. Over 100 companies already confirmed — including EDP Renewables, Acciona, Endesa, Naturgy, Neoen, Galp, Basquevolt and Veolia — alongside 40+ expert speakers and international institutional support from BEPA, BVES, LDES and Volta Foundation. Where Europe’s battery & ES ecosystem turns projects into reality.
15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

July 20, 2026
Australia’s NEM connected 9.1GW of new generation and energy storage to full output in FY26, more than double the result achieved in FY25.
July 19, 2026
Australian Prime Minister Anthony Albanese has said that large-scale data centres will be legally required to put at least as much energy into the grid as they draw from it, and that this supply must be renewable energy.
July 17, 2026
Battery energy storage systems (BESS) operating in California’s grid left approximately US$98 million on the table due to suboptimal bidding strategies, according to a new analysis from Gridmatic.
July 17, 2026
Zinc hybrid cathode battery and storage system maker Eos Energy Enterprises has announced a strategic partnership with the US Department of Defense (DoD) to “enhance the resilience of national defence infrastructure.”
July 17, 2026
The Port of Newcastle has become the first port in New South Wales, Australia, to be approved to safely store grid-scale lithium-ion battery storage systems.