Global climate change presents one of the biggest energy and environmental policy challenges this country has ever faced.  member companies are committed to addressing the challenge of climate change and have undertaken a wide range of initiatives over the last 30 years to reduce, avoid or sequester  emissions. Policies to address climate change should seek to minimize impacts on consumers and avoid harm to  industry and the economy. As of the end of 2016, electric power sector  emissions had declined nearly 25 percent from 2005 levels, driven in part by low natural gas prices, increased deployment of renewable generation and customer demands.