![]() Special Power Sources Special Power Sources (formerly known as Atrex Energy) is a company providing power protection solutions. | ![]() Upstart Power Upstart Power Holdings is a developer and manufacturer of solid oxide fuel cell (SOFC) power systems for on-demand backup power and distributed generation. | ||
Founding Date | Founding Date 2019 | Founding Date 2018 | Founding Date 1914 |
Type | Type Private | Type Private | Type Private |
Tags | |||
Locations | Locations Alliance, US HQ | Locations Southborough, US HQ | Locations Brentwood, US HQ Charlotte, US Chattanooga, US Chesterfield, US Edmond, US Gardendale, US Greeneville, US see more |
Employees | Employees 9 | Employees 264% decrease | Employees 3451% increase |
Operating ⚠ | |||
Product Categories | Product Categories 2 (Aug, 2020) | Product Categories N/A | Product Categories 4 (Jul, 2020) |
Funding | |||
Latest funding round | Latest funding round N/A | Latest funding round $ 17m (over 3 years ago) | Latest funding round $ 3.2m (about 12 years ago) |
Total funding raised | Total funding raised N/A | Total funding raised $ 32.7m | Total funding raised $ 3.2m |

Upstart Power Holdings is a developer and manufacturer of solid oxide fuel cell (SOFC) power systems for on-demand backup power and distributed generation.
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