Nuclear energy

Nuclear energy generates around a quarter of the UK’s electricity. It works by super-heating steam to drive electricity-generating turbines.

Unlike coal, oil or gas-fired power stations it doesn’t produce large quantities of CO2.

But nuclear energy does has several associated problems, not least:

the limited supply of uranium that fuels the nuclear process
the huge amount of energy required to mine and process the uranium ore and then build the power station
the billions of pounds worth of government subsidy required to build, underwrite and de-commission the power stations
the so-far unsolved question of how – and where - to store the radio-active waste-product. Is nuclear energy really a clean-energy source?

Challenge 5

Keep the warmth in the areas where it’s wanted

Keep the warmth in the areas where it’s wanted. Certain parts of buildings – e.g. foyers, storerooms corridors - don’t need to be kept as warm as others. The trick is to keep the warm air where it is needed, and prevent it escaping into areas where it isn’t. Modern heating systems can heat various parts of a building differently, and shutting doors will also help.