The Office of Sustainability & Environment (OSE) collaborates with a wide range of internal and external stakeholders to develop innovative environmental solutions that foster equity, vibrant communities and shared prosperity. Information on OSE's work as well as Seattle's citywide environmental programs is also included in this site.


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Energy Use of City Buildings
Seattle Municipal Buildings 2013 - 2014 Energy Performance Report lists the annual energy use per square foot of all City-owned buildings 10,000 square feet or larger and smaller public facilities such as libraries.

EBR Report Cover

Energy Use of  Private-Sector Buildings
Building Energy Benchmarking Analysis Report 2013  includes key findings from an analysis of 281 million square feet of Seattle's largest buildings required to annually report energy performance (buildings 20,000 square feet and larger). Seattle continues to raise the bar nationally, with 99% of required building owners now measuring their energy use and understanding their energy performance relative to similar buildings.

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New Energy Policy Development
To further energy efficiency action in the building sector, the Office of Sustainability & Environment is collaborating with City departments and the community to develop new incentives, programs and requirements that will help building owners achieve the energy savings needed for Seattle to meet our climate goals. More information on that work here. 

EBR Dashboard

New Energy Dashboard for Private-SectorSeattle is committed to helping building owners and managers create more efficient buildings.  Explore this new online tool that allows building owners to compare the efficiency of their facilities with local and national benchmarks.

The Office of Sustainability and Environment delivers cutting-edge policies and effective programs to address Seattle's environmental challenges while creating vibrant communities and building shared prosperity. Visit the Key Initiatives page to see a list of all the program focus areas for our office.

More examples for each area below can be found in our 2013 Accomplishments Report.


We develop and test forward-looking approaches. For example, following three years of focused effort by OSE, Seattle is poised to be one of the first cities in the United States to develop a district energy system that uses waste heat from sewer lines and data centers to heat buildings.


We deliver measurable results that advance the City's environmental goals. For example, OSE worked with its partners to launch the second year of Fresh Bucks, a program that doubles the purchasing power of low-income residents at Seattle farmers markets. In its second year, Fresh Bucks helped more than 2,500 low-income residents buy healthy produce at Seattle farmers markets.


We create bold and strategic action plans for achieving Seattle's environmental goals. OSE worked closely with Seattle Public Utilities to develop and adopt Seattle's first community-wide implementation goal for green stormwater infrastructure: managing 700 million gallons of stormwater runoff annually with green infrastructure by the year 2025.

2012-13 City Building Energy Performance Report

The City of Seattle released its second annual Municipal Buildings Energy Use Performance Report  which reports 2012-2013 energy use for 8.1 million square feet of City-owned buildings. Reducing energy use in City facilities is just one element of the City's larger Climate Action Plan, which aims to reduce the overall energy use in Seattle's building stock 45% for commercial buildings and 63% for residential buildings by 2050. 

Seattle recognized as the nation's most sustainable city by STAR Communities

STAR is a national organization which evaluates the livability and sustainability of U.S. communities; Seattle received a 5-STAR rating.

Comparison of the 2012 Seattle Energy Code with ASHRAE 90.1-2010

A strong energy code is one of Seattle's key tools for achieving significant reductions in energy use in the building sector and reaching the city's ambitious goal of carbon neutrality. This report, released June 30, 2014, shows that Seattle's buildings are, in aggregate, at least 11.3% more energy efficient than buildings constructed to the ASHRAE standard used by the US Green Building Council's LEED rating system.

Upcoming Environmental Events

Submit an event to the citywide calendar