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Ocean Springs resident Matt Campbell explains how a bi-directional meter measures electricity flow in two directions. Campbell and his wife, Lea, are able to sell the excess energy that their solar panels produce to their utility company.
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Ocean Springs resident Matt Campbell explains how a bi-directional meter measures electricity flow in two directions. Campbell and his wife, Lea, are able to sell the excess energy that their solar panels produce to their utility company.

Sammy Fretwell has written about the environment for more than 20 years. Among the matters he covers are climate change, wildlife issues, nuclear policy, pollution, land protection, coastal development, energy and state environmental policy. Fretwell, who grew up in Anderson County, is a University of South Carolina graduate. Reach him at 803 771 8537.