Alternatives to Fourth Power
The top Energy Storage companies similar to Fourth Power, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
Form Energy67BatteriesSomerville, United States$1.4B- LILion Storage61EnergySan Francisco, United States$350.0M
CarbonX52Battery TechnologyGroningen, Netherlands$22.4M
Sunfire64Clean EnergyDortmund, Germany$377.0M
Apollo63EnergyRamat Gan, Israel$65.0M
Amogy63Clean EnergyBrooklyn, United States$105.0M
Barrell63LithiumDenver, USA
Altilium62Battery RecyclingPlymouth, United Kingdom$39.2M
ArtIn Energy62EnergyTampa, United States$255.0M
Cylib62Battery RecyclingGermany, Germany$66.6M- GRGreen Flexibility61EnergyAmsterdam, Netherlands$400.0M
Electra57Climate TechTel Aviv, Israel$301.0M
Inertia Enterprises55ClimateLivermore, United States$550.0M
Greenlyte54Climate TechEssen, Germany$15.0M
Hadron Energy54EnergyHouston, United States$8.2M
H2Pro53WaterTel Aviv, Israel
Exowatt51Energy StoragePalo Alto, United States$40.0M
Proterra49Climate TechBurlingame, United States$250.0M- NONostromo Energy48Energy StorageTel Aviv, Israel$314.1M
General Fusion48Nuclear FusionVancouver, Canada$40.0M- FLFleetzero46Climate TechSan Francisco, United States
Silib46BatteryTel Aviv, Israel
SunHydrogen45Clean EnergySanta Barbara, United States$2.1M
Rodatherm Energy42Energy StorageTel Aviv, Israel$26.2M
FuelCell Energy36Clean EnergyDanbury, United States- RERemus Energy34Energy StorageSan Francisco, United States$10.0M
- FUFusion Energy Labs34Clean EnergySan Francisco, United States
- SISizable Energy30Energy StorageSomerville, United States$18.6M
CarboCode29Energy StoragePorto, Portugal
LG Energy Solution27Battery TechnologySeoul, South Korea
HydroLite25EnergyTel Aviv, Israel
Aemetis15Climate TechCupertino, United States
Arevon Energy85Energy & Climate TechWestlake Village, United States$350.0M
Silicon Ranch75Clean EnergyNashville, United States
Comerc Energia75EnergySão Paulo, Brazil$589.0M
TAE Technologies73Nuclear FusionFoothill Ranch, United States$100.0M
Esentia Energy Development70EnergyMexico City, Mexico$2.0B
Enpal70Climate TechBerlin, Germany$3.2B
Valar Atomics67Climate TechEl Segundo, United States$592.5M
SolarSquare64Renewable EnergyMumbai, India$67.5M
Rega Energy63Clean EnergyLisbon, Portugal$17.0M- MEMedway Grid Energy Storage System Project63EnergyMedway, USA$158.0M
Zap Energy62Clean EnergyEverett, USA$324.0M
Eavor Technologies Inc.62Clean EnergyCalgary, Canada$10.0M
Solar Landscape61Renewable EnergyAsbury Park, USA$775.9M
Envision61Renewable EnergyShanghai, China$710.0M- SISILA61Energy StoragePalo Alto, United States$188.0M
- CACarbonCount Holdings 160Sustainable Infrastructure$508.0M
Redwood Materials59Battery TechnologyCarson City, United States$1.8B
Crusoe Inc58Climate TechLouisville, United States$435.0M
GPS Renewables58Clean EnergyBengaluru, India$110.8M
Element Zero55Climate TechBoston, United States$10.0M
Voxel Energy54Renewable EnergySan Francisco, United States$12.0M- FOFonto Power54EnergySan Francisco, United States$15.0M
Exergy354CleantechEdinburgh, United Kingdom$25.5M
NT-Tao54EnergyTel Aviv, Israel$27.5M
TheStorage54CleantechTampere, Finland$6.8M
Voltify Inc.54Rail ElectrificationPhiladelphia, United States$30.0M
EnergyX54Energy & Climate TechAustin, United States$27.0M- CICircu Li-Ion54Climate TechMetz, France$19.0M
| Company | Sector | HQ | Funding | Score |
|---|---|---|---|---|
| Form Energy | Batteries | Somerville, United States | $1.4B | 67 |
| LILion Storage | Energy | San Francisco, United States | $350.0M | 61 |
| CarbonX | Battery Technology | Groningen, Netherlands | $22.4M | 52 |
| Sunfire | Clean Energy | Dortmund, Germany | $377.0M | 64 |
| Apollo | Energy | Ramat Gan, Israel | $65.0M | 63 |
| Amogy | Clean Energy | Brooklyn, United States | $105.0M | 63 |
| Barrell | Lithium | Denver, USA | — | 63 |
| Altilium | Battery Recycling | Plymouth, United Kingdom | $39.2M | 62 |
| ArtIn Energy | Energy | Tampa, United States | $255.0M | 62 |
| Cylib | Battery Recycling | Germany, Germany | $66.6M | 62 |
| GRGreen Flexibility | Energy | Amsterdam, Netherlands | $400.0M | 61 |
| Electra | Climate Tech | Tel Aviv, Israel | $301.0M | 57 |
| Inertia Enterprises | Climate | Livermore, United States | $550.0M | 55 |
| Greenlyte | Climate Tech | Essen, Germany | $15.0M | 54 |
| Hadron Energy | Energy | Houston, United States | $8.2M | 54 |
| H2Pro | Water | Tel Aviv, Israel | — | 53 |
| Exowatt | Energy Storage | Palo Alto, United States | $40.0M | 51 |
| Proterra | Climate Tech | Burlingame, United States | $250.0M | 49 |
| NONostromo Energy | Energy Storage | Tel Aviv, Israel | $314.1M | 48 |
| General Fusion | Nuclear Fusion | Vancouver, Canada | $40.0M | 48 |
| FLFleetzero | Climate Tech | San Francisco, United States | — | 46 |
| Silib | Battery | Tel Aviv, Israel | — | 46 |
| SunHydrogen | Clean Energy | Santa Barbara, United States | $2.1M | 45 |
| Rodatherm Energy | Energy Storage | Tel Aviv, Israel | $26.2M | 42 |
| FuelCell Energy | Clean Energy | Danbury, United States | — | 36 |
| RERemus Energy | Energy Storage | San Francisco, United States | $10.0M | 34 |
| FUFusion Energy Labs | Clean Energy | San Francisco, United States | — | 34 |
| SISizable Energy | Energy Storage | Somerville, United States | $18.6M | 30 |
| CarboCode | Energy Storage | Porto, Portugal | — | 29 |
| LG Energy Solution | Battery Technology | Seoul, South Korea | — | 27 |
| HydroLite | Energy | Tel Aviv, Israel | — | 25 |
| Aemetis | Climate Tech | Cupertino, United States | — | 15 |
| Arevon Energy | Energy & Climate Tech | Westlake Village, United States | $350.0M | 85 |
| Silicon Ranch | Clean Energy | Nashville, United States | — | 75 |
| Comerc Energia | Energy | São Paulo, Brazil | $589.0M | 75 |
| TAE Technologies | Nuclear Fusion | Foothill Ranch, United States | $100.0M | 73 |
| Esentia Energy Development | Energy | Mexico City, Mexico | $2.0B | 70 |
| Enpal | Climate Tech | Berlin, Germany | $3.2B | 70 |
| Valar Atomics | Climate Tech | El Segundo, United States | $592.5M | 67 |
| SolarSquare | Renewable Energy | Mumbai, India | $67.5M | 64 |
| Rega Energy | Clean Energy | Lisbon, Portugal | $17.0M | 63 |
| MEMedway Grid Energy Storage System Project | Energy | Medway, USA | $158.0M | 63 |
| Zap Energy | Clean Energy | Everett, USA | $324.0M | 62 |
| Eavor Technologies Inc. | Clean Energy | Calgary, Canada | $10.0M | 62 |
| Solar Landscape | Renewable Energy | Asbury Park, USA | $775.9M | 61 |
| Envision | Renewable Energy | Shanghai, China | $710.0M | 61 |
| SISILA | Energy Storage | Palo Alto, United States | $188.0M | 61 |
| CACarbonCount Holdings 1 | Sustainable Infrastructure | — | $508.0M | 60 |
| Redwood Materials | Battery Technology | Carson City, United States | $1.8B | 59 |
| Crusoe Inc | Climate Tech | Louisville, United States | $435.0M | 58 |
| GPS Renewables | Clean Energy | Bengaluru, India | $110.8M | 58 |
| Element Zero | Climate Tech | Boston, United States | $10.0M | 55 |
| Voxel Energy | Renewable Energy | San Francisco, United States | $12.0M | 54 |
| FOFonto Power | Energy | San Francisco, United States | $15.0M | 54 |
| Exergy3 | Cleantech | Edinburgh, United Kingdom | $25.5M | 54 |
| NT-Tao | Energy | Tel Aviv, Israel | $27.5M | 54 |
| TheStorage | Cleantech | Tampere, Finland | $6.8M | 54 |
| Voltify Inc. | Rail Electrification | Philadelphia, United States | $30.0M | 54 |
| EnergyX | Energy & Climate Tech | Austin, United States | $27.0M | 54 |
| CICircu Li-Ion | Climate Tech | Metz, France | $19.0M | 54 |