By Mark Hand for Think Progress - Utah’s largest electric utility company wants to place new charges on rooftop solar customers, a proposal that critics say would unfairly penalize the customers; in addition, they fear it could lead to a scenario similar to the one that recently played out in Nevada, with rooftop solar companies abandoning the state after policymakers weakened the net metering system. Rocky Mountain Power’s plan would nearly triple monthly customer charges and peak-time usage charges for rooftop solar customers, although the company says the new charges are necessary to create an equitable system between solar and non-solar customers. The Utah Public Service Commission is holding a hearing on Wednesday to get public input on the company’s controversial proposal. Next week, the commission plans to hold a multi-day hearing where Rocky Mountain Power, solar companies, and other official intervenors in the case will get to state their positions. Under Rocky Mountain Power’s proposal, new solar customers would pay a $15 per month service charge, compared to $6 per month now; a $9.02 per kilowatt demand charge for “on-peak” demand; and a 3.81 cents per kilowatt hour charge for electricity. From May to September, on-peak periods occur from 3 p.m. to 8 p.m. From October to April, on peak occurs from 8 a.m. to 10 a.m. and 3 p.m. to 8 p.m.