# Capstone Green Energy Holdings, Inc. funding: rounds and investors

> Capstone Green Energy Holdings, Inc. has raised $113M across 1 round since 2026. Investors include Monarch Alternative Capital LP. Every round with its source.

Source: https://millionrounds.com/company/capstone-green-energy-holdings-inc (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *Capstone Green Energy Holdings, Inc.*

One round we have observed, with the one investor named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Cloud Energy

Raised 8 months ago

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Funding summary Updated 15 Nov 2026

**$113M** raised across 1 round since 2026, from 1 source

- **Latest round:** Round, $113M Mar 2026
- **Led by:** Monarch Alternative Capital LP
- **Investors:** 1 (1 led)

See who backed them

## The rounds

- **Mar 2026** Round **$113M** [Monarch Alternative Capital LP](https://millionrounds.com/fund/monarch-alternative-capital-lp) Lead Reported by Ventureburn SEC filing: $15M sold, first sale Nov 2025

## Funding filed with regulators

Capstone Green Energy Holdings, Inc. filed 2 raises, $128M in all. Filings say how much was sold and to how many investors; they never name the investors.

- Apr 2026 **$113M** 15 investors SEC Form D
- Nov 2025 **$15M** 14 investors SEC Form D

## Everyone who backed them

[Monarch Alternative Capital LP](https://millionrounds.com/fund/monarch-alternative-capital-lp) Investment firm **1** round, led 1

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=capstone-green-energy-holdings-inc).

## Quick answers about Capstone Green Energy Holdings, Inc.

### Who invested in Capstone Green Energy Holdings, Inc.?

Capstone Green Energy Holdings, Inc.'s investors include Monarch Alternative Capital LP. Monarch Alternative Capital LP led its latest round.

### How much has Capstone Green Energy Holdings, Inc. raised?

Capstone Green Energy Holdings, Inc. has raised $113M across 1 round since 2026.

### When did Capstone Green Energy Holdings, Inc. last raise?

Capstone Green Energy Holdings, Inc.'s most recent round was an Undisclosed round of $113M in Mar 2026, led by Monarch Alternative Capital LP.

### What was Capstone Green Energy Holdings, Inc.'s biggest round?

Its most recent round, $113M in Mar 2026, is also its largest on record.

### Who backed Capstone Green Energy Holdings, Inc. first?

Capstone Green Energy Holdings, Inc.'s first round on record, in Mar 2026, was backed by Monarch Alternative Capital LP.

### What stage is Capstone Green Energy Holdings, Inc. at?

Capstone Green Energy Holdings, Inc.'s latest named round is an Undisclosed round, in Mar 2026.

### Where is Capstone Green Energy Holdings, Inc. based?

Capstone Green Energy Holdings, Inc. is based in the United States.

### Who led Capstone Green Energy Holdings, Inc.'s rounds?

Monarch Alternative Capital LP led the Undisclosed round in 2026.

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