# Vesper Energy funding: rounds and investors

> Vesper Energy has raised $286M across 2 rounds since 2024. Investors include Y Combinator and Polychain. Every round with its source.

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

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

# Who invested in *Vesper Energy*

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Energy

Raised 5 months ago

Funding summary Updated 26 Oct 2026

**$286M** raised across 2 rounds since 2024, from 2 sources

**$50M** Debt **$236M** Debt

- **Latest round:** Debt, $236M Jun 2026
- **Step-up i:** 4.7×
- **Investors:** 2

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2025 2026

**$50M** Debt

**$236M** Debt

- **First round:** Debt, $50M
- **Biggest round:** $236M
- **Between rounds:** 19 months

## The rounds

- **Jun 2026** Debt **$236M** *2 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Polychain](https://millionrounds.com/fund/polychain) Source recorded
- **Nov 2024** Debt **$50M** *2 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Polychain](https://millionrounds.com/fund/polychain) Source recorded

## Founders and team

From Vesper Energy's own website: 5 on the team.

- **Juan Suarez** Chief Executive Officer
- **Krish Koomar** Chief Financial Officer
- **Monica Opderbeck** Chief Commercial Officer
- **M. Chad Richwine** VP and General Counsel
- **Craig Carson** Chairman of the Board of Managers

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Debt** 2024 **Debt** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Polychain](https://millionrounds.com/fund/polychain)

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds

[Polychain](https://millionrounds.com/fund/polychain) VC firm **2** rounds

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

## Quick answers about Vesper Energy

### Who invested in Vesper Energy?

Vesper Energy's investors include Y Combinator and Polychain.

### How much has Vesper Energy raised?

Vesper Energy has raised $286M across 2 rounds since 2024.

### When did Vesper Energy last raise?

Vesper Energy's most recent round was a Debt of $236M in Jun 2026.

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

Its most recent round, $236M in Jun 2026, is also its largest on record.

### Who backed Vesper Energy first?

Vesper Energy's first round on record, in Nov 2024, was backed by Y Combinator and Polychain.

### What stage is Vesper Energy at?

Vesper Energy's latest named round is a Debt, in Jun 2026.

### Where is Vesper Energy based?

Vesper Energy is based in the United States.

## Companies like Vesper 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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