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Fourth Power

Fourth Power provides renewable energy an on-demand energy source through utility-scale thermal storage.
2021
7
Massachusetts, United States
Energy StorageRenewable EnergyThermal Storage

Innovation

Industry Problem

Grid-scale, long-duration batteries must have flexible discharge rates and reaction times to give grid operators complete control over how and when the stored energy is used

R&D Focus

utility-scale thermal storage

Innovative Solution

Fourth Power’s modular battery can provide 5 to 10 hours of storage to meet needs now and scale with renewable deployment for needs up to 500 hours and any increment in between

Solution Effectiveness

Fourth Power is among the highest energy density options, enabling to store electricity at the lowest cost — less than $25/kWh-e — 10x cheaper than lithium-ion batteries.

Investment Funding

Last Funding Stage

Series A

Total Funding Amount

$19M

Last Funding Amount

$19M

Last Funding Date

December 13, 2023

Startup Stage

Growth Stage

Lead Investors

DCVC, Breakthrough Energy Ventures and Black Venture Capital

People

Founders

Board Members

CEO

Products

Demo Product or Complete Product?

Prototype

Awards and Recognitions

Awards

2024 World Economic Forum (WEF) Technology Pioneer

Media Apperance

Utility Dive, Fast Company, World Economic Forum, Techcrunch