A wet year has filled dams and will deliver record earnings, but what comes next? (Image: NZME)The four listed electricity gentailers are about to report their strongest combined earnings on record, but the two major brokers covering the sector differ over how much momentum will carry into the year ahead.Forsyth Barr is forecasting combined earnings (ebitdaf) of $3.68 billion for Contact, Genesis, Mercury and Meridian for the year to June 30, up $1.08b, or 41%, on FY25.Contact, Mercury and Meridian are all expected to post record operating earnings. Genesis is forecast to come close but fall just short, with its growth concentrated...