United States · 
Who invested in Mazama Energy?
Mazama Energy's investors include Khosla Ventures and US Department of Energy.
2026
$36MSeries A$135MSeries B
United States · Series B startup
Who invested in Mazama Energy
Funding summaryUpdated 26 Oct 2026
$171Mraised across 2 rounds since 2025, from 2 sources
$36MSeries A$135MSeries B
- Latest round
- Series B, $135MSept 2026
- Step-upi
- 3.8×
- Investors
- 2
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $36M Oct 2025
- Biggest round
- $135M Series B · Sept 2026
- Between rounds
- 11 months from the last two
The rounds
- Sept 2026
- Oct 2025
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.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Mazama Energy
How much has Mazama Energy raised?
Mazama Energy has raised $171M across 2 rounds since 2025.
When did Mazama Energy last raise?
Mazama Energy's most recent round was a Series B of $135M in Sept 2026.
What was Mazama Energy's biggest round?
Its most recent round, $135M in Sept 2026, is also its largest on record.
Who backed Mazama Energy first?
Mazama Energy's first round on record, in Oct 2025, was backed by Khosla Ventures and US Department of Energy.
What stage is Mazama Energy at?
Mazama Energy's latest named round is a Series B, in Sept 2026.
Where is Mazama Energy based?
Mazama Energy is based in the United States.
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