A credit MidAmerican electricity customers were to get late in the spring will show up on January or February bills instead. MidAmerican vice president Jim Howard says they’re doing it because bills are so high now.He hopes this will provide some relief for electricity customers who are also consumers of natural gas. The average Iowa household will get a 20-dollar credit. The utility is urging Iowans who can afford it to pass the credit on to a low-income Iowan who’s having trouble paying their bills.Howard says the credit comes from “efficiencies” in the company’s operations that are passed along to consumers rather than shareholders.Tomorrow the utility will file papers asking the Iowa Utilities Board for permission to move up the date the credits are issued.