Heating

1. 4kw through-flow heater (single phase, 4.4kw): https://electraboiler.nl/products/copy-of-vaillant-doorstroom-boiler-vermogen-3-kw for shower/kitchen_sink ~300 
2.  Floor heating (electrical, 1800W) as a secondary system: https://www.vloerverwarmingstore.nl/p/verwarming-folie-aanvulset-10-m-1200-watt-aanvulset-2  ~500
3. Also, there will be a planar heater with Diesel as an emergency backup for heating for when the battery is empty, this will stop the water tank from freezing, etc etc