By Elisa Wood
September 28, 2011
I hesitate to start this blog with the words “combined heat and power.” You might stop reading.
Okay, so it’s not the Brad and Jen of energy. (That would be solar and wind.) But what it lacks in glamour, it makes up for in constancy and results. It’s an old guy, been around for about a century. And while its name might not sound green, it offers an extraordinarily efficient way to energize buildings.
About once a year, the American Council for an Energy Efficient Economy issues findings that raise the profile of combined heat and power, or CHP, for at least a couple of days.
Why bother? Because despite its ponderous name, CHP is a “Wow” approach to energy, one that people should talk about at parties as much as they do solar these days.
CHP units, often used at universities, hospitals and factories, put to good use the waste heat created in producing electricity. Usually, we just let this heat vanish into the sky. But CHP, a form of distributed generation, reuses the byproduct to heat and cool buildings or assist in industrial processes. CHP can produce energy twice as efficiently as a typical centralized power plant because it provides two energy sources from one fuel. We know it works because, as ACEEE points out, CHP “has been cleanly and quietly providing over 12% of U.S. electricity.”
If it’s so good, why don’t we use more of it? The US is trying – at least some areas of the country.
“CHP markets differ considerably among states,” said Anna Chittum, ACEEE senior policy analyst and lead author of ACEEE’s September 28 report ‘Challenges Facing Combined Heat and Power Today: A State-by-State Assessment.’
Do you live in a pro-CHP state? Not if you’re in Alabama, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Nebraska, Nevada, New Hampshire, North Dakota, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, West Virginia and Wyoming.
You do, if you’re in California, Connecticut, Illinois, Maryland, Massachusetts, New Jersey, New York, North Carolina, Oregon, Pennsylvania South Dakota, Texas, Washington and Wisconsin.
(You can find an analysis of your state’s CHP markets and policies here.)