- Since 2004 Exelon has pursued an environmental strategy that builds on four fundamental elements:
- Regulatory Compliance
- Risk Management
- Resource Stewardship
- Leadership
Transitioning the energy supply system to one that minimizes environmental impacts will require profound changes, and Exelon’s efforts to supply clean energy and promote market-driven solutions supports America’s efforts to make this transformation as efficiently and effectively as possible.
Exelon 2020, which serves as our business strategy guide for investment decisions and as a framework for our public policy advocacy on climate change, is evolving to identify reliable, lower cost electricity supply options that can also achieve other key environmental objectives. From 2010 through 2015, we are investing nearly $5 billion in cost-effective, clean energy projects to support the objectives of Exelon 2020. We continuously assess our strategic options as we better understand the complex environmental, social and economic linkages that challenge our society, and adapt and refine our business strategy to build shareholder value.
Exelon 2020: Merger Factsheet [PDF | 270 KB]Both Exelon and Constellation understand the strategic importance of the environment to the business and appreciate that environmental performance and commitment are important to our customers, investors and employees. Together, the combined focus builds on Exelon 2020.
Low-carbon performance
Exelon placed an early focus on carbon emissions because we see our opportunity to make a real impact on this pressing issue.
As summarized in the chart above, Exelon 2020 performance is expressed as a measure of total annual GHG emissions. Click on image to enlarge.
We recognize that we hold an influential role as one of the largest electric wholesale and retail power generation companies in the US, as well as through our utility companies with over 5.4 million retail electricity customers.
Therefore, in 2008, Exelon launched Exelon 2020, an ambitious strategy to reduce, offset or displace more than 15 million metric tons of greenhouse gas (GHG) emissions per year by 2020. As of May 2011, we are more than halfway to our goal having abated 8.9 million tonnes of GHG emissions; a reduction equivalent to taking more than 1.5 million cars off the road every year.
We have achieved these reductions through:
Exelon 2020: 2011 Update [PDF | 8 MB]In 2011, Exelon made significant strides towards our goal to abate 15.7 million metric tonnes of GHG emissions per year, projecting reaching 75% by year end.
- Exelon joined The Climate Registry in 2011. The Climate Registry establishes consistent, transparent standards throughout North America for businesses and governments to calculate, verify and publicly report their carbon footprints in a single, unified registry.

Measuring Progress and Improvement
As GHG emissions accounting evolves, Exelon makes every effort to respond by updating and expanding its GHG inventory accordingly. With EPAs phase-out of the Climate Leaders program in 2011, Exelon is realigning its Inventory Management Plan to conform to the accounting guidance outlined by The Climate Registry (TCR). TCR’s protocols embody GHG accounting best practices as drawn from The World Resources Institute and the World Business Council for Sustainable Development (WRI/WBCSD) GHG Protocol and the International Organization for Standardization (ISO) 14064 standards, and builds upon the framework established by the Climate Leaders program.
We have integrated performance monitoring of our GHG inventory and Exelon 2020 efforts into Exelon’s quarterly management reporting process. Each of the operating companies documents their progress and results as part of the overall quarterly operational and financial review with the company’s senior leadership. Exelon has completed its transition to TCRs reporting protocols and plans to verify its 2011 GHG inventory in 2012.
Climate Leadership Recognition

Climate Leaders Program.
In 2009, the U.S. EPA’s Climate Leaders program accepted Exelon’s emissions reduction of more than 38% from 2001 levels, far surpassing the company’s voluntary goal of 8% set in 2005.

Carbon Disclosure Project
In 2011, Exelon again participated in the Carbon Disclosure Project (CDP), scoring among the top 10 top utilities in the S&P 500. The CDP collects data from more than 2,500 major corporations on their carbon emissions and climate change strategies. Exelon has participated in the CDP since 2005 and qualified for the Carbon Disclosure Leadership Index (CDLI) in four of the six years we have participated. Our responses document the maturity of Exelon’s climate change initiatives and achievement of related objectives. In 2011, Exelon also completed the CDP Water and Supply Chain Surveys, which are newer initiatives within the CDP to further expand the importance of environmental performance disclosure.
"For the sake of our businesses, our customers and our shareholders, we cannot wait for Washington to act [on climate change]. Businesses must lead the way to a low-carbon future.”
Market Solutions
- Competition and climate solutions go hand in hand. Over the last decade, organized competitive markets have been instrumental in improving the operating performance of the electricity sector, including the performance of the nation’s fleet of nuclear power plants and new investment in environmentally-preferred generation assets, including gas, wind and solar.
Climate Policy Engagement
Because appropriate public policies are crucial to addressing climate change in a meaningful way, Exelon has been an early and vocal advocate for mandatory, economy-wide climate regulation.
- United States Climate Action Partnership (USCAP). As a member of USCAP, we have joined a group of businesses and leading environmental organizations to collectively call on the federal government to quickly enact strong national legislation to require significant reductions of greenhouse gas emissions.
- World Resource Institute (WRI) GHG New Source Performance Standard (NSPS) Dialogue. Exelon participated in the WRI GHG NSPS Dialogue, along with other clean energy companies, national environmental organizations, state government agencies and other advisory organizations and think tanks, to develop a set of comments and recommendations related to issues and regulatory approaches that EPA should consider as it develops its upcoming proposed rulemaking to establish GHG NSPS requirements for existing fossil steam power plants by July 26, 2011. Exelon also advocates for sound policies at the local, state, regional and federal levels that help promote competition, protect our customers, and consistently provide incentives for effective and economically sensible climate change solutions. Most recently Exelon submitted its own GHG NSPS pre-proposal comments to U.S. EPA on March 18, 2011 and participated in the February 4, 2011 EPA-sponsored Electric Power Industry Listening session on this issue.
Environmental Performance Report [PDF | 2.6 MB] The purpose of this 2010 Exelon Corporation Environmental Performance Report is to provide our stakeholders with additional information regarding Exelon’s environmental metrics and performance in 2010 (and for significant events in the first quarter of 2011).