United States · 
Who invested in Excelergy?
Excelergy's investors include Battery Ventures, Hummer Winblad Venture Partners, Nassau Capital and Portal Software.
United States · Series B startup
Who invested in Excelergy
Funding summaryUpdated 26 Oct 2026
$17Mraised across 1 round since 1999, from 1 source
- Latest round
- Series B, $17MNov 1999
- Investors
- 4
The rounds
- Nov 1999Series B$17M
From a historical funding record
Founders and team
From Excelergy's own website: 3 on the team.
- Jessalynn SelbyVice President, Customer Service and Support
- Julia WareingExecutive Vice President
- Robert HempstockVice President, Research and Development
The exit
ExitBuyerPriceWhen
AcquiredNexantundisclosedJan 2009
From historical deal records. Wrong? Tell us.
Everyone who backed them
Nassau CapitalInvestment firm1round
Portal SoftwareGrowth equity1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Excelergy
How much has Excelergy raised?
Excelergy has raised $17M across 1 round since 1999.
When did Excelergy last raise?
Excelergy's most recent round was a Series B of $17M in Nov 1999.
What was Excelergy's biggest round?
Its most recent round, $17M in Nov 1999, is also its largest on record.
Who backed Excelergy first?
Excelergy's first round on record, in Nov 1999, was backed by Battery Ventures, Hummer Winblad Venture Partners and Nassau Capital and 1 others.
What stage is Excelergy at?
Excelergy's latest named round is a Series B, in Nov 1999.
Where is Excelergy based?
Excelergy is based in the United States.
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