Hmmm... How many batteries could you charge in 8 hours?

[tabbypurr]

Homemade batteries can make a huge difference to the cost.

NT

[mcp]

it would be easier to insist on a meter in the car or just base it on the mileage.

[harry]

I 'spect you'll pay more than the norm for electricity the rest of the time. Doesn't seem very useful. Now a couple of hours every night would be more useful.

[Weatherlawyer]

When the offer ends and the price goes up so you can pay for it, he may tell you about an alternative provider. Plus he may notice when the offer ends, so you can change suppliers straight away.

[spuorgelgoog]

1 kilowatt hour of electricity can split about 270 grams of water and produce about 350 litres of hydrogen and 175 litres of oxygen.

I don't know how useful a largish quantitiy of free hydrogen would be.

Owain