Covanta Energy Corp. doesn't believe in wasting waste. Since 1995 the Covanta Onondaga waste-to-energy (WTE) plant has converted approximately 4 million tons of solid waste into 3 million MWh of clean electricity. Additionally, unlike power plants that use wind or solar energy, this 39-MWWTE facility operates 24/7, making it and similar WTE plants among the most continuously reliable sources of renewable electricity generation currently in operation.