Steph Speirs

Steph is a clean energy entrepreneur, strategic advisor, board member, and public speaker.

She most recently co-founded and was CEO of Solstice, an enterprise dedicated to radically expanding the number of American households that can take advantage of clean energy using community-shared solar farms (acquired by MyPower/Mitsui). Steph teaches climate tech at Yale School of Management and is a Resident Fellow at the Center for Business and the Environment. She serves on the Board of Directors of the Sierra Club Foundation, Vote Solar, and Clean Energy for America, and on the Credit Committee of the Community Investment Guarantee Pool. She advises philanthropists, investors, and companies and keynotes on the future of climate tech and clean energy, entrepreneurship, and community benefits.

She previously led sales and marketing innovation initiatives in India at d.light, a solar products company powering areas without reliable electricity; spearheaded Acumen's renewable energy impact investment strategy in Pakistan; developed Middle East policy at the White House National Security Council; and field organized in seven states for the first Obama presidential campaign.

Steph holds a B.A. from Yale, a Master in Public Affairs (MPA) with distinction from Princeton, and an MBA from MIT with a Certificate in Entrepreneurship and Innovation. She was selected as an EY New England Entrepreneur of the Year, US C3E Entrepreneurship Award Winner, Inc Magazine Female Founder 100, Echoing Green Climate Fellow, a Kia Revisionary, a Renewable Energy World 40 Under 40 in Solar, Elle Magazine/INCO’s US Impact Entrepreneur of the Year, and a Grist 50 Fixer.