Values Wattage and Load in Circuit Monitor are 400 (20*20) times smaller than Multimeter Block.
I think there is error in: electrodynamics.common.tile.electricitygrid.TileCircuitMonitor::getMonitoredValue():

case 0 -> network.getActiveTransmitted() / 20.0;

but in
electrodynamics.client.render.tile.RenderMultimeterBlock::render():

multimeter.joules.get() * 20.0