My plant has experienced a drop off in power output over the last few months. I have compared all relevant data from different time periods. Compressor is not fouled etc. The only difference in all relevant parameters is reduced current output, which has resulted in a net loss of MW production. (P=V*I) the I variable is significantly lower. Everything else is the same. I am not an I&E Tech, I am a Control Room Operator... just trying to figure out what is wrong with our unit?