2026 Annual Sustainability Report
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Climate Change Mitigation
City Objective: Transition to 100% renewable energy and maintain an efficient, reliable, and affordable energy system that achieves net-negative carbon emissions no later than 2045.
◀️ City staff and community members gathered at a Climate Action Plan Community Workshop in Kalihi to share manaʻo and help shape Oʻahu’s climate future through the 2025-2030 Climate Action Plan update.
Credit: Office of Climate Change, Sustainability and Resiliency
A clean energy future for Oʻahu is not just about reducing emissions—it’s about creating a system that is more affordable, equitable, and resilient for every household.
In 2025, the City took a major step toward that vision by advancing a planning effort to update the City’s Climate Action Plan (CAP) for 2025–2030 on the pathway to a 100% clean economy by 2045. The City conducted comprehensive community outreach and engagement to ensure this next phase of climate action work centers on community-driven solutions that reduce carbon pollution while also lowering costs of living and improving quality of life for residents.
Through 10 island-wide community workshops, dozens of engagement events, surveys, and guidance from a community-based volunteer advisory committee, O‘ahu residents helped to shape a plan that reflects the diverse needs and priorities of our island communities.
At the same time, the City is already putting these principles into action. The inaugural allocations from the City’s new Climate Resiliency Fund—approved in 2025—are supporting projects that bring energy efficiency and resilience improvements directly into homes. This includes energy audits for City affordable and elderly housing facilities to identify cost-saving upgrades for residents, as well as a pilot program to support multi- and single-family homes in identifying energy-saving opportunities and accessing financial assistance to implement upgrades.
Together, these efforts demonstrate how the City is aligning planning with investment to deliver meaningful results by reducing emissions and making the benefits of clean energy and energy efficiency more accessible and affordable.
Key Performance Indicators
Greenhouse Gas Emissions Inventory
City Target: Net-negative carbon economy by 2045
Total Emissions by Category, in Metric Tons of CO2 Equivalent (MTCO2e)
Climate Action Plan Implementation
Number of Climate Action Plan Actions by Implementation Status, as of December 31, 2025
The City’s Climate Action Plan (CAP) is a science-based, community-driven strategy with 47 actions to reduce carbon pollution and achieve net negative emissions by 2045. The plan was adopted by City Council in June 2021 [Resolution 21-105]. The City is currently updating the plan for 2025–2030—learn more on the
CAP Community Platform.
Electricity Cost Burdens
The Percentage of Household Income Spent on Electricity, on Average on Oahu
Census Tracts on O‘ahu with Highest Electricity Burdens
Electricity cost burden refers to the share of gross household income spent on electricity bills. A household’s electricity burden is considered high when more than 6% of income is spent on electricity. An electricity burden above 10% is considered severe.
Renewable Energy Generation
City Target: 100% renewable energy by 2045
Percent Share of Renewable Energy Generation on O‘ahu, by Energy Source
Renewable Energy Tax Credits
Number of Renewable Energy Technologies Income Tax Credits Claimed, by Income Class
While the total number PV tax credit claims by O‘ahu households increased in 2023, the distribution of those credits continues to skew toward higher-income households. Households earning over $100,000 claimed more than half of all credits—an increase from 2022—while lower-income groups saw a decline in their share, highlighting ongoing gaps in access to the financial benefits of rooftop solar.
Commercial & Multifamily Buildings Benchmarking
Percent of Buildings in Compliance with Better Buildings Benchmarking Program, by Status
The City’s Better Buildings Benchmarking Program established in 2022 requires large commercial and multi-family buildings to annually report energy and water use [Ordinance 22-17]. Buildings’ reported data is available on the Buildings Transparency Map. Reported data includes metrics such as Energy Use Intensity (EUI), which measures a building’s total annual energy use per square foot.