Fortress Power
Smart, Clean Energy Storage for Homes and Business - Lithium Batteries
61 employees · est. 2016 · Langhorne, United States
Parthian Energy
We are redefining how batteries are made and managed.
2 employees · est. 2017 · Pasadena, United States
Fortress Power is the older company (2016 vs 2017); Fortress Power is the larger of the two.
Side-by-Side Comparison
| Metric | Fortress Power | Parthian Energy |
|---|---|---|
| Founded | ||
| Founded | 2016 older | 2017 |
| Headquarters | ||
| Headquarters | Langhorne, United States | Pasadena, United States |
| Employees | ||
| Employees | 61 larger | 2 |
| Industry | ||
| Industry | Energy, Manufacturing, Energy Storage | IT, Manufacturing, Robotics |
| Funding Stage | ||
| Funding Stage | Growth | Non Equity Assistance |
| Total Funding | ||
| Total Funding | Not tracked yet | Not tracked yet |
| Funding Rounds | ||
| Funding Rounds | 1 | 1 |
| Services | ||
| Services | Energy Storage System Sales, Installer Training and Certification, Technical Support and Documentation, Residential and Commercial Energy Solutions, Rebates and Incentives Programs | Not tracked yet |
| Target Customers | ||
| Target Customers | Homeowners, Commercial Businesses, Industrial Facilities, Schools, Healthcare Centers, Government Facilities, Energy Installers and Distributors | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Clean Energy Storage, Lithium Iron Phosphate Batteries, Energy Storage Solutions, Battery Manufacturing, Compact Battery Systems, Reliable Energy Solutions, Home Energy Storage, Commercial Energy Storage, Solar Energy Storage, Energy Dependability, Affordable Energy Solutions, Battery Safety, Premium Energy Products, Sustainable Energy Systems | Battery Technology, Clean Energy, Renewable Energy, Electric Vehicles, Cleantech, Energy Storage, Innovation |
| Website | ||
| Website | fortresspower.com | parthianenergy.com |
About Fortress Power
Fortress Power is a prominent player in the rapidly growing energy storage sector, delivering smart, clean energy storage for homes and businesses through its specialization in Lithium Iron Phosphate batteries. Since its inception in 2016, this Pennsylvania-based company has successfully carved a ni...
About Parthian Energy
Parthian Energy is a cleantech startup founded in 2017 with the mission of advancing and commercializing groundbreaking battery technologies originating from Caltech. Their slogan, "We are redefining how batteries are made and managed," echoes their commitment to innovation in the realms of IT, Manu...
We will tell you when either one moves
BounceWatch watches Fortress Power and Parthian Energy for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Fortress Power and Parthian Energy — by email.
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Compiled from the BounceWatch company index. We last looked at Fortress Power on 14 May 2026, and Parthian Energy on 12 Sep 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
