If you think it’s expensive to hire a professional to do the job, wait until you hire an amateur.
— Red Adair, oil well firefighter

Sam Brooks
Managing Director 


Sam Brooks is a national clean tech leader with a track record of reducing energy costs and risks. Sam was the U.S. Environmental Protection Agency's (EPA) 2014 Individual Climate Leadership Award Winner, and his work has been featured as "leading in energy efficiency" (Greentech Media) and a "climate powerhouse" (Association of Climate Change Officers).

Sam previously served as Director of the Energy Division for DC's Department of General Services (DGS), where Sam led a team that developed and executed a new model to reduce costs and carbon for buildings. Highlights included: onsite distributed solar (13MW) and utility-scale offsite wind (46MW) Power Purchase Agreements (PPAs); advanced energy procurement with site-level forecasts, risk management, and complex power supply contracts for 450k megawatt-hours; a data-driven program, ‘Game Change,’ that acquired and leveraged 15-minute interval data to analyze, design, and scope energy efficiency opportunities. Prior to the DC Government, Sam was an entrepreneur in the energy efficiency space, starting one of the leading efficiency contracting firms in the Mid-Atlantic region. Before that, he was an advocate and leader of green jobs training and economic development initiatives. Sam also spent nearly a decade in political campaign management.

Sam Brooks has created a series of innovative and collaborative efforts that have helped dramatically reduce GHG emissions in D.C., which will serve as models for other cities nationwide.
— U.S Environmental Protection Agency (EPA), Climate Leadership Award, Feb 2014

Harry Warren

Harry Warren is one of the Mid-Atlantic area's preeminent energy experts —including a prominent run leading one of the largest retail energy suppliers in the Mid-Atlantic. Harry served as President of Washington Gas Energy Services (WGES) for 17 years, building it from a 10-person startup to a leading competitive supplier of electricity and natural gas. When he left in 2014, the firm had over 340,000 customers and $1.3 billion in revenues. During his tenure with WGES, the firm received the Green Power Supplier of the Year award from the U.S. Department of Energy in 2011, and Harry was given the Solar Leader – Industry award by the DC-area chapter of the Solar Energy Industries Association (SEIA) in 2013. He is also the past President of the DC Chapter of the Association of Professional Energy Managers, and the current Chair Emeritus - Executive Committee of the Board of Directors for the National Energy Marketers Association.

Harry's work in renewable energy dates back to 1981, when, as an engineer, he designed solar hot water systems for residential and commercial buildings. He later worked on NYSERDA-funded renewable energy and thermal storage research and development, and he contributed to structural engineering projects for NASA. 

Mishal Thadani

Mish has a wide array of experiences in the renewable energy industry including Renewable Energy Credit market research, operation of anaerobic digesters, environmental permitting for dozens of wind farms, and most recently, two years of business process development and analytics for Direct Energy Solar. Mish holds a BS in Civil and Environmental Engineering with Rice University with a Minor in Energy and Water Sustainability, and helps train a new generation of young energy leaders through the Clean Energy Leadership Institute.

Mish is also the co-founder (along with Sam Brooks) of District Solar, a firm that helps District residents obtain unprecedented deals for rooftop solar.

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