Energy storage, where it's needed.
Flatiron provides safe and reliable energy solutions to improve grid reliability, reduce ratepayer costs, and support communities as energy demand grows.

We develop and operate utility-scale energy storage projects that strengthen the electric grid and provide clean capacity where it is needed most.
For each of our projects, we’re guided by our mission to have a positive impact on the local communities we reach. Our mission drives everything we do, and we are proud to be a Certified B Corporation to show our commitment to all stakeholders.





We specialize in the installation of utility-scale energy storage solutions designed to efficiently serve entire communities.
We concentrate on urban environments in the Northeast and Mid-Atlantic U.S., addressing the need for flexible and adaptable generation solutions.
We source our products from top-tier vendors, ensuring that safety remains our highest priority at all times.
We bring 70 years of energy industry experience and 35 years of standalone energy storage experience to every project.
We specialize in the development of utility-scale energy storage solutions designed to efficiently serve entire communities.
We target high electricity demand areas across the Northeast and Mid-Atlantic, addressing the need for flexible and adaptable generation solutions in the U.S.
We work collaboratively with local agencies and governments to ensure our projects are built to the highest safety standards and source our products from top-tier suppliers.
Our leadership team brings over a decade of experience in utility-scale standalone energy storage to every project.
Flatiron makes communities stronger by improving grid reliability, increasing resource efficiency, lowering consumer energy costs and providing flexible generation to meet increasing demand.
Flatiron Energy has a far-reaching impact.
Flatiron is recognized for its strong commitment to excellence and empowering a transition to a secure energy future. We emphasize innovation and efficiency while maintaining high standards in environmental responsibility, leading the way towards an electrified future.





Flatiron Energy is a portfolio company of Hull Street Energy.
Hull Street Energy invests in companies that are strategically positioned for growth as North America transitions to a more sustainable future.