Malta Funding, Investors & Competitors

Malta has raised $133M across 4 funding rounds, most recently a $24M undisclosed-stage round in January 2026.

See full Malta profile

Last Malta funding round

$24M

Undisclosed stage · Jan 2026

Cumulative funding Malta raised

$133M

across 4 funding rounds

Key investors in Malta

  • Breakthrough Energy Ventures
  • Alfa Laval
  • Chevron Technology Ventures
  • Piva Capital
  • Proman
  • Dustin Moskovitz
  • Siemens Energy Ventures
  • Concord New Energy Group

Malta Overview

About Malta

Malta is an energy storage company headquartered in Cambridge, Massachusetts, and incubated at Alphabet's X lab. The firm deploys grid-scale systems using thermochemical salt technology to store renewable and off-peak fossil energy for dispatch during peaks. Malta's pods hold 1,000 megawatt-hours each, with pilots connected to PJM Interconnection grid. Backed by Breakthrough Energy Ventures and Mitsui, the company targets utilities for baseload power balancing with 98 percent round-trip efficiency.


Founded

2018

HQ

United StatesUnited States

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Malta Funding History

Malta has raised a total of $133M across 4 funding rounds.

Malta's first fundraising round was a $26M Series A in December 2018. The most recent completed round was a $24M undisclosed-stage round in January 2026.

Malta funding rounds

Malta funding rounds
DateStageInvestorsRaisedDeal Summary
Jan 2026Undisclosed stage-$24M-
Nov 2023Undisclosed stageBreakthrough Energy Ventures; Proman; Chevron Technology Ventures; Alfa Laval; Piva Capital; Siemens Energy Ventures$22M-
Feb 2021Series BProman (lead); Breakthrough Energy Ventures; Chevron Technology Ventures; Dustin Moskovitz; Alfa Laval; Piva Capital$61MMalta Inc. develops long-duration energy storage technology using a pumped heat energy storage (PHES) system that leverages well-established technologies and materials to store days of electricity, enabling renewables to become fully dispatchable and supporting grid stability. The company raised $50 million in its Series B round on February 24, 2021, led by Proman, with participation from new investor Dustin Moskovitz and existing investors Alfa Laval and Breakthrough Energy Ventures. The funding aims to advance commercialization of Malta's scalable storage solution to accelerate renewable energy expansion. The round later expanded to approximately $60.9 million by August 2021, with additional investments from Chevron Technology Ventures and Piva Capital, as tranche payments closed. Malta's CEO Ramya Swaminathan highlighted the investors' confidence in executing the next phase, while Proman committed engineering expertise for commercial-scale plants. Investors like Breakthrough Energy Ventures' Carmichael Roberts and Dustin Moskovitz emphasized the technology's potential to reduce carbon emissions and support the transition to dispatchable renewables. This Series B followed a $26 million Series A in 2018 led by Breakthrough Energy Ventures with Alfa Laval and others. A subsequent Series C round in December 2023 raised $21.6 million at a $183 million post-money valuation from similar investors including Siemens Energy Ventures.
Dec 2018Series ABreakthrough Energy Ventures (lead); Concord New Energy Group; Alfa Laval$26MMalta Inc., a pioneer in electro-thermal long-duration energy storage, spun out from Alphabet's X moonshot factory on December 19, 2018, raising $26 million in a Series A round led by Breakthrough Energy Ventures, with participation from Alfa Laval and Concord New Energy Group. The technology stores energy as heat in molten salt and cold in antifreeze liquid using a heat pump and heat engine, enabling storage for days or weeks to support grid-scale renewable energy integration, outperforming lithium-ion batteries in duration and cost scalability. The funding supports transitioning detailed designs from X into industrial-grade machinery for a first pilot system, partnering with industry leaders. Investors highlighted Malta's potential to address renewable intermittency using existing components for cost-effective scaling. Breakthrough Energy Ventures, backed by figures like Bill Gates, focuses on clean energy breakthroughs across key emission sectors. Subsequent rounds included a $50M Series B in 2021 led by Proman with existing investors, expanded to ~$60M, and later investments from Chevron, Piva Capital, Trafigura, Siemens Energy Ventures, and Cox Group, alongside partnerships for commercial deployment.

Who has invested in Malta?

8 investors have backed Malta across its funding rounds, including Breakthrough Energy Ventures, Alfa Laval, Chevron Technology Ventures, Piva Capital, Proman and Dustin Moskovitz.

Lead investors include Proman and Breakthrough Energy Ventures.


Malta Investors

Investors in Malta by funding rounds participated
InvestorHQRoundsRoleFirst check
Breakthrough Energy VenturesFranceParis3LeadDec 2018
Alfa LavalSwedenLund3ParticipantDec 2018
PromanSwitzerlandWollerau2LeadFeb 2021
Chevron Technology VenturesUnited StatesHouston, TX2ParticipantFeb 2021
Piva CapitalUnited StatesSan Francisco, CA2ParticipantFeb 2021
Concord New Energy GroupChinaHong Kong1ParticipantDec 2018

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Malta Competitors

Malta competitors include listed companies like Vistra, Enlight Renewable Energy and Sunwoda Electronic Co, and private ones like Base Power, Northvolt and Farasis Energy.

Public and private companies comparable to Malta
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
VistraUnited StatesUnited StatesPublicly listed$18B$5B$48B3.3x
Base PowerUnited StatesAustin, TXPrivate--$13B-
NorthvoltSwedenStockholmPrivate--$12B-
Enlight Renewable EnergyIsraelIsraelPublicly listed$582M$461M$11B-
Sunwoda Electronic CoChinaChinaPublicly listed$9.4B$388M$5.6B0.8x
Farasis EnergyChinaGanzhouPrivate--$4.2B-

Malta Public Comps

Malta is still privately-owned, but its public comps include Tesla, GE Vernova, CATL, Iberdrola, China Yangtze Power, Constellation Energy, LG Energy Solution, Vistra, ACWA Power and Vestas.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Tesla$95B$10B15.0x13.8x140.8x97.4x
GE Vernova$38B$3.2B6.2x5.4x73.5x43.5x
CATL$63B$16B2.8x2.1x11.0x9.2x
Iberdrola$51B$17B4.4x4.3x13.2x11.8x
China Yangtze Power$13B$11B11.4x11.3x13.9x14.4x
Constellation Energy$26B$5B4.6x3.8x23.5x15.3x
LG Energy Solution$17B$3.4B4.8x3.9x24.1x22.2x
Vistra$18B$5B4.0x3.3x13.9x10.2x

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Common questions about Malta

When was Malta founded?Malta was founded in 2018.
Where is Malta headquartered?Malta is headquartered in United States.
Is Malta publicly listed?No, Malta is a private, VC-backed company.
How much funding has Malta raised?Malta has raised $133M across 4 funding rounds.
What was Malta's last funding round?Malta's last funding round was a $24M undisclosed-stage round in January 2026.
Who are Malta's investors?Malta's investors include Breakthrough Energy Ventures, Alfa Laval, Proman, Chevron Technology Ventures, Piva Capital, Concord New Energy Group, Dustin Moskovitz and Siemens Energy Ventures.
Which companies are comparable to Malta?Companies comparable to Malta include Vistra, Base Power, Northvolt, Enlight Renewable Energy, Sunwoda Electronic Co and Farasis Energy.

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