/Companies

Malta Inc

Cambridge, US · Founded 2018 · Delaware corporation · 516 employees on LinkedIn · 6 known investors

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Malta Inc. develops a steam-based ultra-high temperature heat pump that delivers 300–550°C process heat for industrial decarbonization and serves as the core technology for its utility-scale long-duration energy storage system. It targets heavy industry and energy infrastructure, including chemicals, iron and steel, refining, and power generation.

Founders & leadership

PDPhil Delleville
Phil DellevillePresident and CEOPhil Delleville is Executive Officer and Director at Malta Inc., which develops steam-based ultra-high temperature heat pumps for industrial decarbonization and long-duration energy storage. He brings experience in general management, manufacturing, operations, business restructuring, and international expansion across energy services and heavy industry sectors.
RS
Ramya SwaminathanBoard Member, Senior Advisor2024–2025Ramya Swaminathan led the spin-out of Malta Inc from X, Alphabet's Moonshot Factory in 2018 and serves as the company's CEO. Prior to Malta, she was CEO of Rye Development, a hydropower company, and spent over a decade as an investment banker at UBS and Merrill Lynch.
JSJeannine Sargent
Jeannine SargentMember Board Of Directors2021–2026Advisor at Colle Capital Partners
AS
Alex SyedNamed on SEC filing
SHSteve Hirsh
Steve HirshBoard Member2021–2024President & CFO at ION Clean Energy

Board

JS
Jesus Santos EgeaBoard director
GZ
Gonzalo ZubiriaBoard director

Investors · 6

Also in the syndicate · 3

Alfa LavalBreakthrough Energy Ventures (BEV)leadConcord New Energy Group

Funding

SEC filings, press & company announcements

$106.5M disclosed across 3 of 5 rounds · 2018–2025

  • Undisclosed amountSeries ADec 2018

    Breakthrough Energy Ventures (BEV) (lead), Alfa Laval, Concord New Energy Group

    Source ↗
▶$24MraisedJan 2026 · 2 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Jesus Santos EgeaDirector
  • Gonzalo ZubiriaDirector
  • Phil DellevilleExecutive Officer, Director
Offering amount
$24M
Amount sold
$24M
First sale
Dec 2025
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$21.6MraisedDec 2023 · 5 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Ramya SwaminathanExecutive Officer, Director
  • Steve HirshDirector
  • Alexandra PrunerDirector
  • Jeannine SargentDirector
  • Alex SyedDirector
Offering amount
$75M
Amount sold
$21.6M
First sale
Nov 2023
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶Undisclosed amountofferedJan 2022 · 1 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Alex SyedDirector
  • Ramya SwaminathanExecutive Officer, Director
  • Steven HirshDirector
  • Jeannine SargentDirector
First sale
Dec 2021
Incorporated
Corporation, Delaware, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$60.9MraisedAug 2021 · 6 investors · Other Energy
Rule 506(b)
Officers, directors & promoters on the filing
  • Jeannine SargentDirector
  • Ramya SwaminathanExecutive Officer, Director
  • Alex SyedDirector
  • Steve HirshDirector
Offering amount
$60.9M
Amount sold
$60.9M
First sale
Feb 2021
Incorporated
Corporation, Delaware, 2018
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Founder mafia

2 people who came through Malta Inc went on to found or lead other companies.

Related companies · 3

Companies working in the same space as Malta Inc.

In the news

Frequently asked questions

What does Malta Inc do?
Malta Inc. develops a steam-based ultra-high temperature heat pump that delivers 300–550°C process heat for industrial decarbonization and serves as the core technology for its utility-scale long-duration energy storage system. It targets heavy industry and energy infrastructure, including chemicals, iron and steel, refining, and power generation.
Who are Malta Inc's investors?
Malta Inc's investors include Breakthrough Energy Ventures, Piva Capital, PETRONAS Ventures.
How much funding has Malta Inc raised?
Malta Inc has disclosed $106.5M raised across 3 of its 5 known rounds.
Where is Malta Inc headquartered?
Malta Inc is headquartered in Cambridge, US.