# Stronghold Energy II funding: rounds and investors

> Stronghold Energy II has raised $150M across 1 round since 2018. Investors include Warburg Pincus. Every round with its source.

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

[Growth startup](https://millionrounds.com/companies)

# Who invested in *Stronghold Energy II*

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.

Energy

Funding summary Updated 26 Oct 2026

**$150M** raised across 1 round since 2018, from 1 source

- **Latest round:** Growth, $150M Jan 2018
- **Investors:** 1

See who backed them

## The rounds

- **Jan 2018** Growth **$150M** [Warburg Pincus](https://millionrounds.com/fund/warburg-pincus) Source recorded

## Everyone who backed them

[Warburg Pincus](https://millionrounds.com/fund/warburg-pincus) Private equity **1** round

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

## Quick answers about Stronghold Energy II

### Who invested in Stronghold Energy II?

Stronghold Energy II's investors include Warburg Pincus.

### How much has Stronghold Energy II raised?

Stronghold Energy II has raised $150M across 1 round since 2018.

### When did Stronghold Energy II last raise?

Stronghold Energy II's most recent round was a Growth of $150M in Jan 2018.

### What was Stronghold Energy II's biggest round?

Its most recent round, $150M in Jan 2018, is also its largest on record.

### Who backed Stronghold Energy II first?

Stronghold Energy II's first round on record, in Jan 2018, was backed by Warburg Pincus.

### What stage is Stronghold Energy II at?

Stronghold Energy II's latest named round is a Growth, in Jan 2018.

## Companies like Stronghold Energy II

In the same sector, and raised in the last eighteen months.

[**os.energy** $1.2M · Aug 2026](https://millionrounds.com/company/os-energy)[**CleanMax** $165M · Feb 2026](https://millionrounds.com/company/cleanmax)[**Radiance Renewables** $100M · Feb 2026](https://millionrounds.com/company/radiance-renewables)[**Turno** $4.7M · Feb 2026](https://millionrounds.com/company/turno)[**e-TRNL Energy** $3.0M · Feb 2026](https://millionrounds.com/company/e-trnl-energy)[**PolyCycl** $2.9M · Jan 2026](https://millionrounds.com/company/polycycl)

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