Mainspring Energy
Accelerating the transition to the affordable, reliable, net-zero carbon grid of the future.
454 employees · est. 2010 · Menlo Park, United States
WattAnyWhere
Renewable, Off-grid Energy – Available Anywhere, Anytime
10 employees · est. 2021 · Sion, Switzerland
Mainspring Energy is the older company (2010 vs 2021); Mainspring Energy is the larger of the two.
Side-by-Side Comparison
| Metric | Mainspring Energy | WattAnyWhere |
|---|---|---|
| Founded | ||
| Founded | 2010 older | 2021 |
| Headquarters | ||
| Headquarters | Menlo Park, United States | Sion, Switzerland |
| Employees | ||
| Employees | 454 larger | 10 |
| Industry | ||
| Industry | Energy, Clean Energy, Oil and Gas | Industrial, Renewable Energy, Clean Energy |
| Funding Stage | ||
| Funding Stage | Grant | Debt Financing |
| Total Funding | ||
| Total Funding | $468.00M | Not tracked yet |
| Funding Rounds | ||
| Funding Rounds | 6 | 6 |
| Services | ||
| Services | Not tracked yet | Not tracked yet |
| Target Customers | ||
| Target Customers | Not tracked yet | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Power Generation, Climate Change, Clean Technology, Energy Innovation, Engineering, Startup, Technology, Innovation, Grid Modernization, Fuel-flexible Power, Net-zero Carbon, Prototype Development, Stanford Engineers | Off-grid Solutions, Power Generation, Fuel-cell Technology, Energy Autonomy, Decarbonization, Micro-grids, Renewable Fuel Technology, Energy Independence, Clean Electricity, High-power Solutions |
| Website | ||
| Website | mainspringenergy.com | wattanywhere.com |
About Mainspring Energy
Mainspring Energy is an energy startup founded in 2010 and headquartered in the United States, with a mission to accelerate the transition to the future grid. The company's slogan, "Accelerating the transition to the affordable, reliable, net-zero carbon grid of the future," encapsulates its focus o...
About WattAnyWhere
WattAnyWhere is a Swiss startup focusing on renewable, off-grid energy solutions. The company's innovative fuel-cell generator, developed in collaboration with Swiss-French academic and industrial partners, is designed to provide a sustainable and efficient alternative to accessing the power grid fo...
We will tell you when either one moves
BounceWatch watches Mainspring Energy and WattAnyWhere 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 Mainspring Energy and WattAnyWhere — by email.
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Compiled from the BounceWatch company index. We last looked at Mainspring Energy on 12 Sep 2024, and WattAnyWhere on 26 Feb 2025. 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.
