FPL residential customers using 1,000 kilowatt-hours will receive a credit of $44.46 on their January electric bills.

Armando Olivera, president and CEO of FPL, said: “Customers are seeing the benefit not only of lower fuel prices but also our investments in modern, more fuel-efficient power plants.”

FPL said that the 2010 bill would be lower than the 2009 bill once the company’s pending base rate request is resolved.

The company has asked for an increase in the base rate, which will be more than offset by the efficiency of its power plants and by lower fuel costs. As a result, with approval of the base rate request, the typical 1,000 kilowatt-hour residential customer bill would be about $6 less per month, going from $110.72 currently to $104.76 under the company’s proposal. New rates are currently expected to be in place by March 2010.

FPL said that, since 2002, the company’s investments in making its power plants efficient have saved customers an estimated $3 billion in fuel charges. If such investments are continued, the company estimates that annual fuel charge savings would reach $1 billion a year starting in 2014.