I've found that it helps to take a really long-term look at electricity rates before coming to conclusions over trends. The Bureau of Labor Statistics compiles electricity prices per kWh since the late 1970s until today as a part of the Consumer Price Index. Here's the chart for the Washington DC metro area from 1978 until a few months ago:
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Looking at the last decade, prices have actually fallen since the Great Recession, but there was a prolonged increase long before then. It's not enough evidence to say that prices will increase in the future, but it's enough to tell me that future prices are hard to predict.