Convention 6.05 - Electric HWS with and without Storage

Where an electric system has no storage then it should be entered as an ‘instantaneous system’ withgrid supplied electricity as its fuel and a seasonal efficiency of 1 (i.e. 100%).Where an electric system has some/any storage then ‘electric instantaneous system’ should NOT beused and ‘Stand-alone water heater’ should be used. Where such a system also has its losses or volumeand insulation details entered then the efficiency of the system should be 1 (i.e. 100%).