E-3 Energy Advisors is proud to be a certified Service-Disabled Veteran-Owned Small Business (SDVOSB). This designation is more than a certification, it’s a reflection of the values that guide our work: service, accountability, mission focus, and a commitment to excellence.
SDVOSB-certified firms are verified by the U.S. Department of Veterans Affairs or Small Business Administration and must be at least 51% owned and controlled by one or more service-disabled veterans. This certification qualifies E-3 to support federal energy contracts, meet diversity procurement goals for commercial partners, and serve as a trusted vendor for public sector energy and infrastructure projects.
But beyond eligibility, our team lives the ethos of service in every client engagement.
Meet Our Marine Leadership
Our leadership combines technical energy insight with business and operational excellence that is rooted in financial clarity, technical execution, and a relentless focus on client outcomes.
Peter Schmitt, President & CEO
Peter Schmitt earned a bachelor’s degree in finance from the Rochester Institute of Technology following eight years of honorable service in the United States Marine Corps. Peter’s leadership is rooted in the discipline and teamwork instilled through his military background. His post-service career has centered around operational leadership and energy infrastructure strategy. Peter leads E-3 with an emphasis on clear communication, high-performance delivery, and long-term trust with clients and partners.
Seth Mansur, Energy Asset Intelligence & Deployment Strategist
Seth Mansur was born in Greenfield, Massachusetts and currently resides in Sturbridge. He enlisted in the U.S. Marine Corps in February 2003 and shipped to Marine Recruit Depot, Parris Island on the same day as his high school graduation. After completing Marine Combat Training and MOS instruction as an Intelligence Specialist at NAS Oceana Dam Neck Annex, he served with the 25th Marine Regimental Headquarters Company in Worcester.
His active-duty service included multinational training exercises like Operation Talisman Saber in Australia and a 2008 combat deployment to Al Asad, Iraq with HQ CO 2nd Battalion, 25th Marines. During deployment, he earned his Green Belt in Marine Corps Martial Arts and continues to train in Brazilian Jiu-jitsu today.
Seth was honorably discharged at the rank of Sergeant in 2011. Since then, he has carried the Marine Corps values of Honor, Courage, and Commitment into every client relationship and energy strategy. His leadership at E-3 reflects a relentless commitment to serve with integrity, move fast without cutting corners, and deliver more than expected.
Seth also serves as the Department Finance Officer for the Marine Corps League in Massachusetts and is the Senior Vice Commandant and Adjutant of Detachment #1094.
Why It Matters
Our military experience informs how we lead, how we serve, and how we deliver.
We operate with precision, clarity, and purpose.
We remain calm in complexity and deliver under pressure.
We believe the mission is never complete until the job is done right.
Whether you’re a public agency, private portfolio manager, or mission-driven institution, working with E-3 means working with a team that brings more than energy expertise — we bring Marine Corps discipline and a service-first mindset to everything we do.