Berkeley’s Building Emissions Saving Ordinance (BESO) is a local policy designed to reduce greenhouse gas emissions from buildings — a sector responsible for approximately 47% of the city’s emissions, according to the latest Berkeley Climate Action Plan update.
The ordinance requires building owners to complete energy assessments that identify ways to reduce energy use, lower emissions, and improve building performance. These assessments are a key part of Berkeley Building Energy Benchmarking efforts.
The goal is to encourage energy efficiency, building electrification, and a shift away from fossil fuel dependence. Energy assessments must be performed by registered energy assessors, who provide property-specific recommendations and connect owners to local and state incentives for upgrades.
Through BESO, Berkeley continues its leadership in climate action by requiring buildings to report their energy performance and explore opportunities for improvement.
BESO compliance requirements vary by building type and size:
Annual benchmarking reports for applicable properties must be submitted by July 1st every year.
While energy efficiency improvements and electrification upgrades are not mandatory, they are strongly encouraged.
BESO compliance is required:
Benchmarking reports should be submitted through the EPA’s ENERGY STAR® Portfolio Manager, ensuring transparency and accountability in building energy performance.
You may be fined up to $1,000 per year for failing to comply with BESO requirements.