United States · 
Who invested in eSolar?
eSolar's investors include Oak Investment Partners, Idealab, NRG Energy and ACME GROUP.
200820092010201120122013
$130MSeries B$40MSeries F$22MVenture
United States · Venture startup
Who invested in eSolar
Funding summaryUpdated 26 Oct 2026
$192Mraised across 3 rounds since 2008, from 3 sources
$130MSeries B$40MSeries F$22MVenture
- Latest round
- Venture, $22MSept 2013
- Biggest round
- $130MSeries B · Apr 2008
- Investors
- 4
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 B, $130M Apr 2008
- Biggest round
- $130M Series B · Apr 2008
- Usual gap between rounds
- 4.8 years the median of 2
The rounds
- Sept 2013
- Jan 2009Series F$40M2 new
Reported by media.corporate-ir.netSEC filing: $10.0M sold, first sale Mar 2009
- Apr 2008
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 eSolar
How much has eSolar raised?
eSolar has raised $192M across 3 rounds since 2008.
When did eSolar last raise?
eSolar's most recent round was a Venture of $22M in Sept 2013.
What was eSolar's biggest round?
eSolar's largest round on record is $130M (Series B), in Apr 2008.
Who backed eSolar first?
eSolar's first round on record, in Apr 2008, was backed by Oak Investment Partners and Idealab.
What stage is eSolar at?
eSolar's latest named round is a Venture, in Sept 2013.
Where is eSolar based?
eSolar is based in the United States.
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