King County-Cities carbon wedge

50x30 Carbon Reduction: What Would It Take?

In early 2014, the King County-Cities Climate Collaboration (K4C) asked New Energy Cities to analyze what it would take to achieve meaningful carbon reduction goals at community scale in the near term. As a voluntary partnership of nine cities in King County that share expertise and best practices on carbon reduction, the K4C offers a unique opportunity for the County and partner cities to map individual and shared carbon reduction strategies together.

The bar is high: King County has set a goal of reducing carbon emissions 80 percent below 2007 levels by 2050 (80x50), with an intermediate goal of 50 percent reduction by 2030 (50x30). Five King County cities have adopted the 80x50 and 50x30 goals; Seattle has an even bolder goal of carbon neutrality by 2050.  In July 2014, the King County Growth Management Planning Council, the formal body of elected officials charged with planning for economic and population growth in King County, will consider setting shared near-term regional targets. This is a pivotal moment when local political leadership has stepped forward, and regional targets are on the table for adoption.

To develop a shared carbon reduction work program to achieve meaningful reductions, the K4C first commissioned analysis for the County as a whole, and the contract made New Energy Cities’ services available at a discounted rate for individual member cities. (A slide deck with highlights of the King County work described below is available here.)

To start, New Energy Cities created an Energy Map that depicts a snapshot of community-wide energy consumption and greenhouse gas emissions for a defined base year. This graphic is similar to one we created for other partner cities in the past, including Issaquah, WA, and is based on the national energy flow charts that Lawrence Livermore National Lab creates annually.

New Energy Cities then conducted a Carbon Wedge analysis to outline potential pathways of strategies to achieve the 50x30 goal. Inspired by Princeton University’s Carbon Mitigation Initiative, we developed this community-level framework in conjunction with the City of Issaquah, WA, and later revised it with the City of Beaverton, OR.

First, we estimated the combined reductions from three existing laws—federal Corporate Average Fuel Economy standards, Washington’s renewable energy standard, and the state’s energy code. These would help to bring reductions to approximately the current level. To paraphrase Climate Solutions’ KC Golden: stop making the problem worse.

Second, we calculated the carbon reduction associated with strategies in transportation, building energy efficiency, and renewable energy supply, consistent with national best practices. We looked at achieving the 50x30 target through three different pathway scenarios—one with greater emphasis on reducing vehicle miles traveled (VMT), one with greater emphasis on increased building energy efficiency, and one with a balance of the two.

Based on a range of sources, including Stockholm Environment Institute’s Getting to Zero report for Seattle and Nelson\Nygaard’s transportation analysis for the Seattle Climate Action Plan, and in consultation with local subject matter experts, we identified the following combination of ambitious but feasible targets that would add up to meet the 50x30 goal:

  • 15 percent reduction in GHG emissions intensity of cars and light trucks, 10 percent of which could be achieved through passage of a statewide clean fuels standard that Governor Inslee has proposed. The remaining five percent could be met through partnership to expand use of electric vehicles, for example.
  • 20 percent reduction in vehicle miles traveled (VMT). Achieving this target requires not only typical mode-shift and land use strategies, but also, in New Energy Cities’ view, financial signals such as pay-as-you-drive insurance, which is already available in Washington.
  • 25 percent energy use reduction from existing buildings (including heating) and no net carbon emissions from new buildings. This would entail a much more robust regional retrofit economy than we currently have, and an energy code on par with Massachusetts and California. (Vancouver, WA-based New Buildings Institute, which has advised both MA and CA, is helping the Regional Code Collaboration to chart this course.)
  • 20 percent increase in renewable electricity countywide, with no coal in the energy portfolio and limited new natural gas-based electricity sources. As Seattle City Light is already virtually carbon-neutral, determining how to collaborate more deeply with Puget Sound Energy and partner organizations like Northwest SEED will be crucial.

The solutions are mathematically straightforward, but they do require hard work and deep partnership among the County, cities, energy utilities, transportation agencies, building community, and nonprofit service organizations.

Leading the way, Issaquah and Shoreline city staff are already in the process of prioritizing and selecting strategies for near-term implementation, and other K4C members are not far behind. The bottom line is that the 50x30 goal is ambitious but achievable, with sufficient community engagement, business support, political will, and staff commitment.

Elizabeth Willmott's picture

former New Energy Cities Program Manager

, Climate Solutions

Elizabeth served Climate Solutions as program manager for the New Energy Cities program, working with cities to help them meet their carbon reduction goals through innovative programs and policies. She most recently authored The Urban Clean Energy Revolution, a detailed compendium of urban climate solutions worldwide (also published in segments as the Low-Carbon Cities blog series), and Breaking Down Barriers to Deep Energy Efficiency in King County, a briefing paper on how to overcome obstacles to deep home energy efficiency. She also co-authored Powering the New Energy Future from the Ground Up, a July 2012 report on small and medium-sized cities around the U.S. that are demonstrating leadership in local clean energy innovation.

Elizabeth knows and loves local government. As lead author of the World Bank’s 2011 climate change adaptation guide for cities in developing countries, co-author of King County’s 2007 adaptation guidebook with ICLEI and the University of Washington, climate change aide to former King County Executive Ron Sims, and project manager of the first King County Climate Plan in 2007, Elizabeth brings a deep and wide background in community climate planning to the New Energy Cities team.

The program’s focus on "carbon math" also bears Elizabeth’s signature. She first found religion in Excel spreadsheets as the Recovery Act performance and accountability lead for the U.S. Department of Housing and Urban Development, overseeing the results of $13.6 billion in grants to cities and communities around the U.S.  Today her data-driven approach is most obvious in New Energy Cities’ energy maps and carbon wedge graphics.

Outside of work Elizabeth leaves ample time for gardening, biking, and movie-watching with her husband Andy. She holds a double degree in biology and Chinese language from Williams College and a master’s degree in public policy from Harvard Kennedy School.