# Proof Energy funding: rounds and investors

> Proof Energy has raised $12M across 1 round since 2022. Investors include Cleantech Open. Every round with its source.

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

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

# Who invested in *Proof Energy*

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

**$12M** raised across 1 round since 2022, from 1 source

- **Latest round:** Growth, $12M Jul 2022
- **Investors:** 1

See who backed them

## The rounds

- **Jul 2022** Growth **$12M** [Cleantech Open](https://millionrounds.com/fund/cleantech-open) Source recorded

## Founders and team

From Proof Energy's own website: 1 founder, 1 on the team.

**Vlad Kalika** Founder & CEO

- **Tim Dummer** President

## Everyone who backed them

[Cleantech Open](https://millionrounds.com/fund/cleantech-open) Accelerator **1** round

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

## Also claim to have backed them

This firm lists Proof Energy as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Halliburton Labs](https://millionrounds.com/fund/haliburton-labs) Accelerator Per its own site

## Quick answers about Proof Energy

### Who invested in Proof Energy?

Proof Energy's investors include Cleantech Open.

### How much has Proof Energy raised?

Proof Energy has raised $12M across 1 round since 2022.

### When did Proof Energy last raise?

Proof Energy's most recent round was a Growth of $12M in Jul 2022.

### What was Proof Energy's biggest round?

Its most recent round, $12M in Jul 2022, is also its largest on record.

### Who backed Proof Energy first?

Proof Energy's first round on record, in Jul 2022, was backed by Cleantech Open.

### What stage is Proof Energy at?

Proof Energy's latest named round is a Growth, in Jul 2022.

### Where is Proof Energy based?

Proof Energy is based in the United States.

## Companies like Proof Energy

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

[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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