The Nation's Oldest Net-Zero Home Belongs to One Green Ann Arbor Family


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f you want to find Matt and Kelly Grocoff’s carbon footprint, you’ll need to call in Sherlock Holmes.


Their imprint is so faint that it barely exists, thanks to their net-zero energy house in Ann Arbor and a lifestyle that’s greener than grass. A net-zero home is one that produces as much — or more — energy than it consumes. The Grocoffs’ Folk Victorian house is 110 years old, making it the nation’s oldest net-zero home and the first in a historic district. In January, USA Today named it one of the Top Seven Green Homes for 2010. Matt says they will “never pay another utility bill again” because excess energy produced by their solar panels goes back into the utility grid. So now, instead of writing a check to their utility company, DTE pays the Grocoffs.

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