My contribution is halving our domestic energy consumption, and more, without moving house and buying my electricity from EDF, 100 % of whose electricity comes from low carbon sources. 95% of France's electricity is produced from low-carbon sources, most of it nuclear, the rest wind and hydro power. and it comes to Britain through the inter-connector cable running under the channel.
I recently visited the tidal barrage at Rances, which has been in operation since 1966. This has reversible turbines that can produce power 24/7. Over 50 years later Britain is only starting to play with this reliable form of low carbon energy source, having turned down the Severn Barrage and now toying with the possibility of tidal barrages along the South Wales coast, as ever against strong opposition.
There are many problems with being too dependent on wind power, especially from offshore sources, the power from these is not regular and when the wind is blowing sudden guests the rise in electricity supply suddenly feeding into the grid can be close to uncontrollable. Danish grid controllers, who have had such problems, the country has had to impose a moratorium on further wind power, describe controlling their grid as like riding a bucking bronco. What happens if there is a sudden surge into the grid? It can cause a shut down of the grid and a partial or total blackout. Fortunately there is a network of diesel fuelled' black start' power systems, and 'black' really does describe their emissions, to get the system up and running again.
Fracking? I am quite happy with fracking, even under my house, under properly controlled conditions. DH is currently involved in the installation of offshore wind turbines. He thinks there is too much optimism about both their durability and reliability and we conveniently forget the huge amount of energy used to build them and install them.