Florida Power and Light filed a request today with the state for its first increase in base rates in 20 years.
The company says it needs to invest money in expanding facilities to meet the state's dramatic population growth.
The increase would have to be approved by the Public Service Commission. The average residential customer would see rates go up by $3 to $4 a month starting in 2006. Business customers would also see increases.
While FPL hasn't got an increase in basic rates since 1985, customers' bills have gone up in that time because the company is allowed to pass higher fuel costs on to consumers.
The company is also passing on to customers some of the cost of responding to last year's hurricanes.
FPL is the state's biggest electric power company.