It's probably stupid idealistic naiveity but I've often wondered why
renewables can't eventually produce 100% of the world's energy requirements.

Enough pump storage systems could surely buffer the demands of the
'Eastenders' broadcast on a cold Boxing day.
Enough tidal power systems would surely provide an entirely predictable
power generation source most of the time.
Enough investment into Hydrogen fuel systems for our automobile usage etc
would mean zero CO2 outputs in the long term.

Leaving the oil for making children's toys.

Ross

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I think some 20% of Scotland's energy is from 'alternative' sources, and
given
that Scotland produces several times more energy than it uses, it is a
good
model for viable alternatives. However, electricity is of less use if the
oil
runs out as many electrical devices are made from oil products.

Gianna