About Alva Energy
Alva Energy is a Cambridge, MA-based nuclear technology company that productizes power uprates — standardized upgrades to existing U.S. nuclear reactors — adding 200–300 MWe of capacity per plant as a faster, lower-cost alternative to building new facilities. Its turnkey approach manages the full uprate lifecycle, from regulatory compliance and procurement to installation and commissioning, targeting a total of 10 gigawatts of new clean power from the existing U.S. reactor fleet.
Company details
Funding
Total raised
$33M
Last stage
Series A
Investors
Founders
W. Robb Stewart
CTO and Co-Founder of Alva Energy. Nuclear engineer specializing in nuclear construction, cost estimation, and power uprates.
LinkedIn
James Krellenstein
CEO and Co-Founder of Alva Energy. Previously founded PrEP4All (2018) and started Global Health Strategies' decarbonization practice focused on nuclear and renewable energy. Holds a BS in Physics from The City College of New York.
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