Mark Sullivan

About Mark

Mark Sullivan is an energy analyst and clean energy writer with over eight years of experience covering residential solar economics, federal incentive programmes, and electric vehicle adoption across the United States. He joined Green Energy Calculators to help homeowners cut through the complexity of clean energy decisions with accurate, data-driven guidance — without a sales pitch attached.

Before moving into energy journalism, Mark spent four years as an analyst at a Midwest regional utility, where he evaluated grid-scale renewable integration and residential distributed energy resource (DER) programmes. That background informs how he writes about net metering policy, time-of-use rate structures, and battery storage economics — topics where utility-side knowledge makes a practical difference for homeowners.

Mark holds a B.S. in Mechanical Engineering from the University of Michigan and a Certified Energy Auditor (CEA) credential from the Association of Energy Engineers. He has tracked every iteration of the federal Investment Tax Credit since the 2015 extension debate, and currently monitors DSIRE, IRS guidance and DOE programme updates to keep Green Energy Calculators's incentive content current.

When a reader asks whether solar panels are worth it in their state, whether a heat pump makes financial sense against their gas bill, or exactly what qualifies for the 30% ITC, Mark wants the answer to come from real data — not from someone who earns a commission on the outcome.