Serving the southwestern United States in solving complex energy, air pollution, and decarbonization challenges since 2001 by leading the effort to advance energy efficiency in the utilities, buildings, transportation, and industrial sectors.

Latest News

May 26 , 2026 · by SWEEP

What CDOT’s 10‑Year Plan budget says about Colorado’s transportation priorities

May 26, 2026 | Matt Frommer & Chandler Sanchez ———————————————————- On May 21, the Colorado Department of Transportation (CDOT)...

May 14 , 2026 · by SWEEP

Colorado makes progress on affordability, housing, and transportation in 2026 legislative session

Misses key opportunities to manage the impact of data centers, expand access to efficiency upgrades, and fund public transportation.

May 07 , 2026 · by SWEEP

Safe buildings as sovereignty: How Southwestern tribal nations are shaping their own building codes

May 7, 2026Jim Meyers, Building Efficiency Specialist ———————————————————- For most Americans, building codes are background noise: the permits, inspections,...

SWEEP Programs

SWEEP promotes the improvement of utility energy efficiency programs, beneficial electrification, sustainable building codes and regulations, and the advancement of clean transportation in the Southwest. In addition, we advocate for energy equity in vulnerable communities and cost savings for homeowners and commuters through data driven decarbonization solutions.

Resources & Publications

Publications, reports, fact sheets, white papers, bill explainers, and other resources authored by SWEEP experts.

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About SWEEP

The Southwest Energy Efficiency Project (SWEEP) is a public-interest organization promoting greater energy efficiency and clean transportation in Arizona, Colorado, Nevada, New Mexico, Utah, and Wyoming. For over two decades, SWEEP’s work has dictated and supported the Southwest region’s forward-thinking progress in advancing energy efficiency and electric vehicles.