Electric vehicles offer many opportunities to save money: on gas, on oil changes, on engine maintenance. But, it turns out, insurance isn’t one of them. In fact, the latest data shows that EVs typically cost $3,159 per year to insure — nearly $1,000 more than gas-powered cars. It’s an added burden that could make the payback period on EVs significantly longer.  On average, the insurance gap between electric and internal combustion engine, or ICE, vehicles was 42 percent, according to a report released today by the insurance-comparison marketplace Insurify. But it varies drastically by state and model. The most expensive locale was Washington, D.C., where coverage cost $6,394 versus $4,124 for ICE cars. Maine was the cheapest at $1,476, just $184 more than a conventional car. The difference was most pronounced in Rhode Island, which has a 73 percent spread.…