A decision by the Nevada Public Utilities Commission could restore older, more favorable rates to about 32,000 customers who installed or applied for a rooftop solar system before this year. The Nevada PUC is scheduled to vote today on a settlement between NV Energy, SolarCity, the state Bureau of Consumer Protection and the commission's staff. Customers who signed up before a rate hike took effect this year would be "grandfathered" into lower rates for 20 years. Commissioners raised rates for rooftop solar customers this year, saying it corrected a subsidy that non-solar customers were paying for those who had panels.