Basic service charges will also go up 25 cents per month for a $6 monthly total. Ratepayers will also pay more for energy assistance programs. Each household will pay about $15 total per year. Avista and other parties reached a partial settlement in the case in September. Falling wholesale prices for natural gas prompted Avista to scale back its revenue requests, though the level approved by regulators Tuesday went even lower than that. Debbie Simock, an Avista spokeswoman, said utility officials were still reviewing the 148-page order and didn't have an immediate comment. State regulators allowed Avista's stockholders the chance to earn a 10.2 percent rate of return on their shares, instead of the 11 percent return that Avista requested. In addition, Avista wasn't allowed to recover costs associated with power purchases from the Lancaster generating plant in Rathdrum.