CEDAR RAPIDS, Iowa (AP) — Electricity bills for Alliant Energy customers will increase in February as the utility passes along higher rates it’s paying to a transmission provider. Utility spokesman Scott Drzycimski says the increase in the transmission rates will result in about a one-quarter percent increase to a customer’s overall bill. That amounts to about a $1 a month increase for residential customers. Drzycimski says the increase could be partly offset by falling costs for natural gas to generate electricity.