According to the conventional wisdom, if you install solar panels on your roof you can zero out your electric bill and save pot loads of money. This is actually true if you live in certain states, particularly California. The catch is that everyone that does not have solar panels on their roof is paying for your benefits. For the homeowner that’s a not a problem. It’s a feature. Solar only works during the day and best in the middle of the day. But residential electricity consumption tends to peak in the evening. A scheme called net metering fixes this problem...