Berkeley Building Emissions Savings Ordinance

The building owner of a commercial property over 15,000 square feet must report the total energy and water used annually using the ENERGY STAR Portfolio Manager. These benchmark reports are due each year by June 1st.

Pegasus is Your Trusted Partner for BESO “Compliance”

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Pegasus is Your Trusted Partner for BESO “Compliance” 〰️

Ensure seamless Berkeley BESO compliance for your properties with Pegasus. We proactively explore “Beyond Benchmarking” requirements, seeking exemptions to save you time and money. Should an audit be necessary, our team delivers a clear, ROI-focused report.

Join our growing list of satisfied clients. Talk to an experienced professional today:

The BESO Ordinance

Energy Benchmark Report - Due Annually

The Berkeley Building Emissions Savings Ordinance (BESO) requires annual energy and water benchmarks for commercial buildings over 15,000 square feet.

Energy Audit - Due Every 5 Years*

The owner of a non-residential building over 50,000 square feet must ensure the building receives an energy audit by an architect or licensed engineer every five years. Licensed professionals will conduct energy and water audits to find energy-saving opportunities. Our audit offers the building owner a detailed list of specific opportunities for saving energy and money, showing payback and ROI.

*Exemptions and Deferrals

High-performance buildings relieve the Building Owner of the requirement to submit an Energy Assessment for the current reporting period. High-performance buildings are defined as buildings with an Energy Star score of 75 or better for the year preceding the audit due date. Deferrals from reporting requirements are also available under certain conditions. See section 1.5 of the BESO Administrative Regulations PDF for definitions and details.

Energy Assessments – Due upon sale

Energy and water “Assessments” (walk-through audits) are required for commercial buildings 850 to 50,000 square feet.  (Pegasus is not licensed for residential properties)

Berkeley BESO FAQs

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Benchmarking or Beyond —
Start Here and We’ll Guide You.

Not sure what applies to your building? Click below to get in touch — we’ll guide you.

🟦 Benchmarking

Annual compliance for AB 802, EBEWE, BPO, and other ordinances.

🟩 Beyond Benchmarking

Audits, exemptions, retro-commissioning, and ENERGY STAR certification.