Policy

AB 802 - Moving Towards an Era of Energy Use Disclosure and Benchmarking

With the passage of Assembly Bill 802 earlier in 2015, California became the first state in the nation with the mandate to provide energy use data to users so they can measure or benchmark the energy use of building for operational, behavioral, and explore retro-commissioning activities to reach energy efficiency goals.  

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What's the Dirtiest Time of Day to Use Electricity?

Are there "dirty" hours when the California electric grid is producing a lot of CO2 per kWh, and "clean" hours with low CO2 output? It seems that midday should have lower CO2/kWh compared to other hours, if a large fraction of power across the state is generated by solar photovoltaics (PV) during these hours. Looking at data, Beyond Efficiency did in fact find a midday reduction in CO2 emissions per kWh generated for 2014 onward.

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