By Charles Hernick and Lisa Jacobsen, Opinion Contributors, The Hill.

The economic expansion since 2009 is historic not just for its duration, but for the role that America’s energy sector has played in creating jobs and reducing carbon emissions. Over the past 12 months this trend has solidified and brought our domestic energy sector to its cleanest place in history.

While the energy jobs of our forefathers still exist, the most dynamic growth is now occurring in clean energy generation, according to the 2018 Sustainable Energy in America Factbook, released this week. This includes natural gas, solar, wind, hydropower, biofuels, and waste-to-energy — and energy efficiency. Together, these sectors support 3 million jobs nationwide.