Electric power line operator Oncor has reached a settlement with the cities it serves to raise the rates for delivering electricity by a total of $136.7 million a year.

That amounts to an average of about $2.35 a month for residential electricity customers using 1,300 kilowatt-hours of juice.

That’s less than half of what Oncor had proposed. When Oncor asked for higher rates in January, officials said the increase reflected higher investments in the electricity grid.