I created a PV collector field consisting of three fields (type 94a) for 3 incident directions (east, south, west) all 94a- modules are connected tot o a type109 weather generator. The total incident radiation for the three directions seems to be calculated correctly (output of type109 for three different surfaces). But the power output of the PV modules seems to be always the same, which is not correct. Do you have a solution for that ? It seems to be the used input variable in type 94a is always the same, so that only the last value is used for the calculation. Olaf |