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By Inside ICF
Energy expert Duncan Rotherham named top sustainability consultant
Clean50 recognizes leader for contributions to Canada’s low-carbon economy
Driving emission reductions and energy rate payer benefits through the implementation of effective energy and environmental policy and program delivery is no small task, but Duncan Rotherham, vice president with ICF Canada—and part of one of North America’s largest energy and environment strategic consultancies—manages it all very well.

Duncan has led ICF’s energy and utility business in Canada for more than two decades, providing strategic advisory and planning, data analysis, and energy efficiency and decarbonization program implementation services across Canada. Helping government, industry, utility, and financial services clients meet—and exceed—their sustainability goals and energy reduction targets.
And that’s why Duncan was named to Canada's Clean50 list for 2021 in the Consultants & Enablers category. Clean 50 recognizes the top 50 leaders who have done the most to advance sustainability and clean capitalism in Canada over the previous two years.
And that’s why Duncan was named to Canada's Clean50 list for 2021 in the Consultants & Enablers category. Clean 50 recognizes the top 50 leaders who have done the most to advance sustainability and clean capitalism in Canada over the previous two years.
The future of sustainability
A gas and electric utility resource planning and regulatory support specialist and jack-of-all-energy trades, Duncan supports governments in the design and deployment of climate and energy policy and manages our decarbonization analysis and corporate strategy development and implementation work with electric and gas utilities and a broad spectrum of heavy industrials.
Our programs have resulted in over $50 million in rebates distributed to commercial and industrial customers and 2 million tons in GHG emissions reductions in Canada, for organizations such as Energy Efficiency Alberta and the Independent Electricity System Operator of Ontario.
He also guides strategy and sales for our electrification advisory and programmatic businesses, helping utilities and local governments grow load, attract new customers, and reinforce the grid while enhancing revenue, reducing emissions, and strengthening relationships with stakeholders and customers. He’s currently designing and managing beneficial electrification programs for buildings, on- and off-road vehicles, and industries across North America.