Clients across the U.S. trust CSE to provide the insight and operational expertise necessary to achieve their sustainable energy goals.
From tackling issues of national importance to smaller scale region-specific solutions, CSE’s clients appreciate our mission-focused approach.

National
Our current contracts range from partnering with Department of Energy national research laboratories to collaborating with auto manufacturers to track and analyze electric vehicle market data – with many past programs that have achieved high levels of success.
- Alliance of Automobile Manufacturers
- Department of Energy
- Building Performance Institute
- Concurrent Technologies Corp
- National Renewable Energy Laboratory (NREL)

Statewide
CSE regularly partners with state government agencies, utility regulators, air resource boards, utility service providers, academic institutions and others to provide renewable energy solutions for transportation and the built environment. We’re leaders in electric vehicle incentives, administrating the five largest statewide electric vehicle incentive programs in the nation, and experts in providing program support for advancing and managing distributed energy resources.
- Department of Energy
- Hawaii Gas
- Massachusetts Department of Energy Resources
- Massachusetts CEC
- Charge Up New Jersey

Regional
Throughout California, CSE is well-known as a trusted partner for local and regional programs to decarbonize transportation and the built environment. We specialize in creating engaging community-based projects and outreach focused on access, equity and transparency.
- Sonoma Clean Power Authority o Pacific Gas & Electric
- Tuolumne County Transportation Council
- City of Berkeley
- StopWaste
- City of Palo Alto
- Monterey Bay Community Power
- Bay Area Rapid Transit (BART)
- Monterey Bay Air Resources District
- Peninsula Clean Energy
- Sonoma County o Metropolitan Transportation Commission (MTC)
- City and County of San Francisco
- PacifiCorp
- Southern California Edison
- SoCalGas
- Pacific Gas & Electric
- San Joaquin Valley Air Pollution Control District
- UC Davis
- Sacramento Air Quality Management District
- Sacramento Municipal Utility District
- Kern Council of Governments
- Bear Valley Electric Service
- Los Angeles Department of Water & Power
- San Diego Gas & Electric
- Southern California Edison
- SoCalGas
- Southern California Public Power Authority (SCPPA)
- Port of Long Beach
- Renew Financial
- SoCalREN
- Los Angeles County
- San Bernardino Associated Governments (SANBAG)
- Port of San Diego
- County of San Diego
- San Diego Association of Governments (SANDAG)
- Department of Energy
- Cleantech San Diego
- City of Carlsbad
- City of Chula Vista
- City of Del Mar
- Pasadena Water & Power
- City of San Diego
- Groundwork San Diego
- Santa Ana Watershed Authority
- Poseidon Water
- The Charter Schools of San Diego
- The San Diego Foundation
- Alternative Energy Systems Consulting (AESC, Inc.)
- GRID Alternatives
- Prime Healthcare