Camden County needs a backup plan for future storms. Clean energy can be the solution, developer says. Updated Mar 08, 2021; Posted Mar 06, 2021 Dramatic rain clouds hover over the Covanta Camden Energy Recovery Center and its smokestack last May, viewed from I-295. (Michael Mancuso | NJ Advance Media for NJ.com)Michael Mancuso | NJ Advance Media for NJ.com Facebook Share When a powerful derecho slammed South Jersey with 93 mph winds last June and a round of intense thunderstorms followed just hours later, Camden County found itself with a sewage problem. The storms managed to knock out the two independent power lines that connect the Camden County Municipal Utilities Authority’s sewage treatment plant to the main power grid. Then, the plant’s backup generator failed.