Energy sector vulnerabilities assessed by DOE

The U.S. Department of Energy (DOE) is taking a closer look at how climate change and the severe weather associated with it could potentially impact critical power generation and delivery infrastructure in the U.S.

The U.S. Energy Sector Vulnerabilities to Climate Change and Extreme Weather report, which was called for in President Barack Obama’s Climate Action Plan, notes that 2012 was both the warmest year on record in the contiguous U.S. and saw the hottest month since the country started keeping records in 1895. The implications for America’s energy infrastructure include:

·      Risks to energy infrastructure located along the coast from sea level rise, increasing intensity of storms, and higher storm surge and flooding — potentially disrupting power generation and distribution.

·      Increasing risks of physical damage to power lines, transformers and electricity distribution systems from hurricanes, storms and wildfires that are growing more intense and more frequent.

·      Increased risk of temporary partial or full shutdowns at thermoelectric (coal, natural gas, and nuclear) power plants because of decreased water availability for cooling and higher ambient and air water temperatures. Thermoelectric power plants require water cooling in order to operate. A study of coal plants, for example, found that roughly 60 percent of the current fleet is located in areas of water stress.

·      Reduced power generation from hydroelectric power plants in some regions and seasons due to drought and declining snowpack. For example, earlier spring snowmelts could decrease summer water availability leading to potential hydropower shortages when energy demand for cooling is greatest.

·      Higher air conditioning costs and risks of blackouts and brownouts in some regions if the capacity of existing power plants does not keep pace with the growth in peak electricity demand due to increasing temperatures and heat waves. An Argonne National Laboratory study found that higher peak electricity demand as a result of climate change related temperature increases will require an additional 34 GW of new power generation capacity in the western U.S. alone by 2050, costing consumers $45 billion. This is roughly equivalent to more than 100 new power plants, and doesn’t include new power plants that will be needed to accommodate growth in population or other factors.

In addition to identifying critical areas at risk from climate change and extreme weather, the report also identifies activities already underway to address these challenges, and discusses potential opportunities to make the energy sector more resilient. Potential future opportunities for federal, state, and local governments could include innovative policies that broaden the suite of available climate-resilient energy technologies and encourage their deployment, improved data collection and models to better inform researchers and lawmakers of energy sector vulnerabilities and response opportunities, and enhanced stakeholder engagement. These activities will increase the resilience of our energy infrastructure by “hardening” existing facilities and structures to better withstand severe droughts, floods, storms or wildfires and by contributing to smarter development of new facilities.

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