About us

Our mission is to develop utility-scale energy storage projects
that reduce emissions contributing to climate change and environmental injustice.

Our core values
Excellence
01

We commit to achieving excellence in every aspect of our work, ensuring that no detail is overlooked and that every action reflects our high standards.

Respect
02

We respect and embrace our team's diversity, knowing it strengthens our company and fosters innovation, collaboration, and inclusivity.

Community
03

We dedicate ourselves to transforming the global energy ecosystem, enhancing local communities, and finding joy in our efforts, ensuring that our work benefits both people and the planet.

Character
04

We believe in maintaining transparency, fostering an unfailing curiosity, and continuously learning from our experiences, ensuring that our work remains innovative and effective.

Certified B Corp

We achieved B Corporation status by demonstrating high social and environmental performance and making a legal commitment to be accountable to all stakeholders, including our community members. Our performance, measured against B Lab’s standards, can be found on our B Corp profile.

our team

Get to know our management team

Join our dynamic, fast-growing team at Flatiron. Be part of our journey from startup to clean energy leader. See our job listings.

Jon Poor

Chief Operations Officer

Jon leads project operations at Flatiron. He previously held leadership roles in development, consulting, project management, and engineering at ENGIE, National Grid, and General Electric. Jon has 24 years of experience working in the energy industry and 9 years in standalone storage.

Brett Cullen

Chief Development Officer

Brett leads development efforts across the Flatiron portfolio. He previously held leadership roles in greenfield development, acquisitions, finance, and transmission modeling at ENGIE, Socore Energy, and Navigant. Brett has 13 years of experience working in the energy industry and 7 years in standalone storage.

Juliana Mandell

Chief Commercial Officer

Juliana leads commercial activities at Flatiron. She previously held leadership roles in greenfield development, acquisitions, market development, and regulatory affairs at ENGIE, Green Charge Networks, and General Electric. Juliana has 13 years of experience working in the energy industry and 10 years in standalone storage.

Robert Brink

Chief Financial Officer

Rob leads financial strategy and operations at Flatiron. He previously held leadership roles in acquisitions, financing, development, and battery optimization at ENGIE, Advanced Microgrid Solutions, and General Electric. Rob has 16 years of experience working in the energy, consulting, and finance industries and 10 years in standalone storage.

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.