By THE STAR STAFF LUMA Energy stated on Wednesday that the fuel cost adjustment on electricity bills is not a rate increase requested by the company, but rather a regulated mechanism that responds to changes in the energy market. “It is important to clarify that this does not constitute a request for a rate increase on the part of LUMA,” LUMA Energy said in a written statement. “The fuel cost adjustment is a regulated mechanism that reflects changes in the cost of energy generation.”  “This...