Fullmark Energy

Fullmark Energy

Overview

About Fullmark Energy

Simplify's Rating
Why Fullmark Energy is rated
C+
Rated C on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Industrial & Manufacturing

Energy

Company Size

11-50

Company Stage

Debt Financing

Total Funding

$223.9M

Headquarters

Chicago, Illinois

Founded

2018

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Simplify's Take

What believers are saying

  • On November 18, 2025, Fullmark sold a $46 million ITC transfer.
  • TWAICE signed a three-year partnership on August 27, 2025 across 290 MWh.
  • Fullmark claims a 4GW pipeline across California, Texas, and the Mid-Atlantic.

What critics are saying

  • California concentration exposes Fullmark to CAISO price swings and permitting delays.
  • A single safety incident would shut Redwood projects and freeze financing for years.
  • A wildfire-linked battery incident would destroy bankability for the platform.

What makes Fullmark Energy unique

  • Fullmark Energy, formerly Hecate Grid, focuses solely on utility-scale energy storage.
  • Its Redwood portfolio reached 125MW/290MWh commercial operations on November 7, 2025.
  • InfraRed Capital Partners backs Fullmark with institutional capital and a standalone structure.

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Funding

Total Funding

$223.9M

Above

Industry Average

Funded Over

2 Rounds

Debt funding comparison data is currently unavailable. We're working to provide this information soon!
Debt Funding Comparison
Coming Soon

Benefits

Health Insurance

401(k) Company Match

Commuter Benefits

Paid Vacation

Paid Sick Leave

Parental Leave

Hybrid Work Options

Growth & Insights and Company News

Headcount

6 month growth

-8%

1 year growth

-8%

2 year growth

-8%
Hecate Grid
Aug 23rd, 2024
Hecate Grid appoints Chris McKissack as Chief Executive Officer

Chicago - Aug. 23, 2024 - Hecate Grid today announces that it has appointed Chris McKissack as Chief Executive Officer (CEO), effective immediately.

Renewables Now Ltd
Jun 20th, 2024
Hecate Grid banks USD 125m to advance energy storage pipeline in US

US energy storage projects developer Hecate Grid announced on Tuesday that it has secured USD 125 million (EUR 116.6m) in loans to fund interconnection and offtake security for a portfolio of more than 30 standalone projects.

PR Newswire
Jun 18th, 2024
Hecate Grid Secures $125 Million Letter Of Credit Facility Package With Mufg

Financing advances Hecate Grid's U.S. energy storage pipelineCHICAGO, June 18, 2024 /PRNewswire/ -- Hecate Grid, a joint venture between an InfraRed Capital Partners managed fund ("InfraRed") and Hecate Energy, today announced the recent close of a 4-year $125 million Letter of Credit ("LC") facility with Mitsubishi UFJ Financial Group ("MUFG"). The facility will be used to finance interconnection and offtake security for Hecate Grid's portfolio of more than 30 standalone energy storage projects."Hecate Grid is committed to deploying energy storage that enables the transition to zero-carbon electricity while sustaining the reliability of the power grid," said John Bonner, Hecate Grid's Head of Finance. "The financial resources provided by MUFG will substantially augment Hecate Grid's ongoing growth program."Stephane Kofman, Partner and Head of Value-add funds at InfraRed, said: "Hecate Grid is playing an important role in accelerating America's renewable energy transition and this facility further reinforces our growth ambition for the company."Alberto Mihelcic Bazzana, Director at MUFG, said: "MUFG is pleased to partner with Hecate Grid as it deploys the energy storage resources needed to facilitate the effective and reliable integration of renewable resources into the electric system."Macquarie Capital served as financial advisor to Hecate Grid. Millbank acted as borrowers' legal counsel and Paul Hastings acted as lenders' counsel.About Hecate GridLaunched in 2018, Hecate Grid is an independent power producer focused on developing, building, owning, and operating stand-alone energy storage projects. Originally incubated within the renewable energy development firm Hecate Energy, Hecate Grid is now a stand-alone business jointly owned by a fund managed by international asset manager InfraRed Capital Partners Limited, which manages $13 billion of equity capital

Energy-Storage.news
Feb 8th, 2023
IPP Hecate Grid raises US$98.9 million for ‘laser-focused’ standalone energy storage deployment

Hecate Grid, an independent power producer (IPP) developing utility-scale battery storage assets, has raised US$98.9 million through lenders.

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