In message , Jonathan
writes
I remember those clever Kiwis use Ripple Control, whereby the grid load is
smoothed by being able to have some flexibility in the time that off-peak
heating is on.
IIRC, the way they do it is that the consumer is guaranteed a certain amount
of heater time during the night, but the time it comes on can be changed
during sudden demand or generator fall-off, and those that use daytime
electricity for heating can have the heating circuit switched out for a
certain amount of time.

Seeing as more and more people seem to have radio teleswitches these days to
turn off-peak on and off, I was wondering (as the frost hardened outside)
why we don't have this system here?

Prolly because most people have gas or oil central heating

hth

--
geoff