When things get tight with power and the sun she isn’t shining as much as you’d like, its the nights that are the killer.
We find, usually during the day we can break even at worse but of course there is no sunshine during the night, evenings and early mornings. So we often focus on how to remove power we don’t need overnight, whilst we are asleep,
There are a number of candidates but the obvious ones are:
- Your inverter – will consume, usually around 30W just to be ready and running. If you don’t need Mains Voltage over night, turn it off (30W = circa 2a which times a 15 hour night of no sunshine = 30Ah)
- We have a separate inverter just for the TV. Smaller but still consumes about 1A or circa 15Ah
- 4G router, Network routers, Iridium GO, Tv in standby, wifi, Radios etc. can all be turned off overnight.
Essential load draws seem to be limited to bilge pumps, anchor watch and significantly the fridges.
We have three fridge/freezers, each of which draw about 2A on average (much higher during compressor load but averages out at about 2A per hour so circa 30AH each or 90AH.
We have found with prudent pruning we can get our over night power consumption from a normal draw of around 300AH down to only 100-150AH or about what the fridges would need + essential systems.