United States · 
Who invested in Enerpulse?
Enerpulse's investors include Altira Group, Robeco, SAIL Capital Partners LLC and SAIL Venture Partners.
20042005200620072008
$2.3MVenture$5.5MSeries B$5.0MSeries E
United States · Series E startup
Who invested in Enerpulse
Funding summaryUpdated 26 Oct 2026
$13Mraised across 3 rounds since 2004, from 3 sources
$2.3MVenture$5.5MSeries B$5.0MSeries E
- Latest round
- Series E, $5.0MApr 2008
- Biggest round
- $5.5MSeries B · Jul 2007
- 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
- Venture, $2.3M Feb 2004
- Biggest round
- $5.5M Series B · Jul 2007
- Usual gap between rounds
- 3.4 years the median of 2
The rounds
- Apr 2008
- Jul 2007
- Feb 2004
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
SAIL Venture PartnersVC firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Enerpulse
How much has Enerpulse raised?
Enerpulse has raised $13M across 3 rounds since 2004.
When did Enerpulse last raise?
Enerpulse's most recent round was a Series E of $5.0M in Apr 2008.
What was Enerpulse's biggest round?
Enerpulse's largest round on record is $5.5M (Series B), in Jul 2007.
Who backed Enerpulse first?
Enerpulse's first round on record, in Feb 2004, was backed by Altira Group.
What stage is Enerpulse at?
Enerpulse's latest named round is a Series E, in Apr 2008.
Where is Enerpulse based?
Enerpulse is based in the United States.
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