Owain wrote:
Dave Liquorice wrote:
Why woulndn't you just store the E7 heated water?
My telly doesn't run on hot water...

A small one might run on some Peltier cells.

but yes splitting the E7 across a water based heat bank and a battery
bank probably does drop the required invertor size to sub 10kW. How
ever add up the breakfast routine, kettle (3kW), toaster (1 or 2kW),
hob (1kW) for porridge

A stored heat cooker could help there.

Ah. like an Aga.

6 grand of heatbank and cooker combined. ;-)


plus lights and fridges/freezers, breakfast/kids telly. The peak demand
of a single house can be surprisingly high, if short lived, even if
24hr average is less than 1kW.

If you don't use a lot of cooking appliances, and stagger the washing
machine and dishwasher (or operate them on E7), 5kW would probably cover
most things. People on barges manage with sporadic mains electricity and
gas/diesel heating, and they're restricted by the space available for
batteries.

Yup. Cooking uses surprisingly little power. Its just that rapid heating
demands a high peak output. Batteries CAN do that. They are rather good
at it.


Owain