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Sam Mardell

Senior Associate
  • Carbon-Free Electricity

Sam is a senior associate with RMI’s Carbon Free Electricity practice, where he focuses on financial and policy tools to facilitate an equitable transition to clean energy. He joined RMI in June 2019.


Prior to joining RMI, Sam studied at the Yale School of Forestry & Environmental Studies where he specialized in clean energy policy and technology. In 2018, Sam interned at RMI with the Energy Web Foundation team where he helped develop use cases for blockchain technology in the energy sector. Before graduate school, Sam supported state efforts to promote local solar market development with Meister Consultants Group, and conducted demand response operations for EnerNOC.


Master of Environmental Management (M.E.M), Yale School of Forestry & Environmental Studies

BA, Science, Technology, and Society, University of Massachusetts Amherst


Boulder, CO

Authored Works

Utilities, Analysts, and Customers Agree: Transitioning from Coal Saves Money

Coal economics have eroded dramatically in recent years, so much so that the continued use of existing coal-fired power often imposes a cost burden on electricity customers that exceeds the cost of newer and cleaner sources of power. Resource planning analyses performed by utilities across the country—including PacifiCorp in…

Golden coils in soil with young plants

Financing Tools for an Equitable Transition to a Clean Economy

Meeting the United States’ NDC target of reducing emissions 50–52 percent below 2005 levels by 2030 will require rapid action from companies, governments, and other entities across the country. These actors must accelerate the retirement and clean replacement of long-lived assets and infrastructure that support carbon-intensive economic activity (or,…


How to Retire Early: Making Accelerated Coal Phaseout Feasible and Just

For over a century, growing presence of coal smokestacks worldwide signified economic development and progress. Coal supplied our homes with electricity and our factories with power. At the same time, this workhorse of the industrial era caused serious harm to our health and the environment. Today, the costs of continuing…