County of San Diego
Climate Action Plan

The County of San Diego is committed to helping communities thrive while protecting the region’s unique and diverse natural resources. One of the County’s sustainability tools is the 2018 Climate Action Plan (2018 CAP), which contains a series of measures to reduce greenhouse gas emissions over the next 30 years. These measures are administered through multiple County departments and focus on activities that occur within the unincorporated area of the region, and within County-owned facilities, regardless of location.

The County is actively engaged in implementing the the 26 measures in the 2018 CAP to reduce greenhouse gas emissions.

On September 30, 2020, the County of San Diego Board of Supervisors voted to set aside its approval of the County’s 2018 Climate Action Plan (2018 CAP) and related actions because the Final Supplemental Environmental Impact Report (2018 CAP SEIR) was found to be out of compliance with the California Environmental Quality Act (CEQA). In response to this Board action, staff are preparing a Climate Action Plan Update (CAP Update) to revise the 2018 CAP and correct the items identified by the Court within the Final 2018 CAP SEIR that were not compliant. The 2018 CAP and EIR are being revised in partnership with residents, and business and environmental groups. The County continues implementing sustainability measures to effectively reduce greenhouse gases (GHGs) as part of its ongoing commitment to the environment. The court ruling struck down part of the 2018 CAP’s EIR but did not find fault with its 26 GHG reduction measures. Learn more about the CAP Update.


The County reduced 130,075 metric tons of carbon dioxide equivalent by implementing 2018 Climate Action Plan measures in 2019. Find status updates on all 26 measures on the 2018 CAP dashboard, and read the full 2019 Annual Monitoring Report to learn more. 


The 2018 CAP reduces greenhouse gas emissions through 26 enforceable, quantifiable, and achievable measures within five emissions sectors. Roll over and click on each button to learn more. 


Built Environment & Transportation


Solid Waste

Water & Waste Water

Agriculture & Conservation


County of San Diego climate action stories, news, and updates


Start the New Year Off with a Sustainable Resolution If you are still working on selecting your 2021 New Year’s Resolution, or looking to add another, consider incorporating sustainability into your daily life. To help you on this journey, here are a few New Year’s Resolutions you can use to live more sustainably. Continue Reading Article


Recycle Right for a Sustainable Holiday Season Did you know that Americans generate 25 percent more waste between Thanksgiving and New Year’s Day than during the rest of the year? The County is here to offer some simple tips on how to reduce your waste, Recycle Right, and create a more sustainable holiday season. Continue Reading Article


Implementing a Roadmap to Clean Transportation In its first year of Electric Vehicle Roadmap implementation, the County took steps to accelerate transportation electrification across the region with policy changes, EV infrastructure improvements, public outreach, and regional collaboration. See highlights of the County’s progress to electrify the roadway network. Continue Reading Article