Combined Heat and Power
Combined heat and power (CHP) technologies produce both electricity and steam from a single fuel at a facility located near the consumer. These efficient systems recover heat that normally would be wasted in an electricity generator, and save the fuel that would otherwise be used to produce heat or steam in a separate unit.
Currently, CHP systems:
• Produce almost 8% of U.S. electric power;
• Still save building and industry owners over $5 billion/year in energy costs;
• Decrease energy use by almost 1.3 trillion BTUs/year;
• Reduce NOx emissions by 0.4 million tons/year;
• Reduce SO2 emissions by over 0.9 million tons/year;
• Prevent release of over 35 million metric tons of carbon equivalent into the atmosphere.

More on CHP
What Is CHP?- the Basics

Recycled Energy
A variety of industrial waste energy streams can be recycled into useful heat and power. These include hot exhaust gases, low-grade fuels (some of which are typically flared), and high-pressure steam and gas. Proven technology can profitably convert the energy in hot exhaust (600 degrees F or higher) from any process into steam that drives turbine generators and produces electricity. Coke ovens, glass furnaces, silicon production, refineries, natural gas pipeline compressors, petrochemical processes, and many processes in the metals industry vent hot exhaust that can be profitably recycled to produce fuel-free power.

Another way to recycle waste energy is by burning flared gas from blast furnaces, refineries, or chemical processes to produce steam and electricity. In addition, the energy potential in pressurized gases also can be recycled into electricity.