Credit U.S. Agency for International Development - Pakistan / Wikimedia Commons Environmentalists hope the state will extend net metering rates for solar before time runs out. Net metering gives people with solar panels credits for any excess energy that they deliver to the grid. That was the topic of Friday’s Renewable Energy Day event. Four years ago, Indiana passed a law to slowly decrease the amount solar customers get for energy they generate — from the higher retail rate to the lower wholesale rate. Solar advocates say the law makes solar less affordable for homeowners and stifles job growth in the state’s solar industry.