This paper catalogs deep retrofit activities in existing buildings. Our review of completed ultra-low energy building (ULEB) retrofit projects in the residential and commercial sectors shows that d…
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This paper catalogs deep retrofit activities in existing buildings. Our review of completed ultra-low energy building (ULEB) retrofit projects in the residential and commercial sectors shows that deep energy savings are technically feasible. While some buildings need extensive interventions requiring significant investments of time and money, others can meet aggressive targets at relatively low cost. Projects can use either leading-edge technologies and techniques or tried-and-true weatherization methods. Some building owners and occupants are willing to adopt new behaviors and practices to meet energy efficiency goals. We identify opportunities to increase the number of existing ULEBs through market development, advanced technologies, and new retrofit techniques. Moving forward, further work is needed to develop the best models for delivering savings and standardized approaches that will work at scale.
The commonwealth spends almost $11 billion a year buying energy from out of state. Mass Save lowers bills and keeps money at home.
Utility energy efficiency programs have increased investment in low-income households, but significant gaps remain. This report examines spending and savings trends across 48 major U.S. utilities, identifies barriers to expanding low-income programs and highlights policies and program strategies that can improve energy affordability and equitable access to efficiency upgrades.
The United States faces interlocking energy challenges: rising home energy bills and gasoline prices; new demand for electricity from data centers and other loads; high greenhouse gas emissions from burning fossil fuels.
Now, a new era of energy efficiency progress in our buildings, transportation, and industry is needed to meet this moment. This wide-ranging study finds a massive opportunity.
Home energy report programs, in which utilities provide households with personalized insights into their energy use and tips to lower their bills, are a…
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