Well we are certainly getting 'real' old son as £900 energy bills for us isn't.
If your bills are that much then you may be justified in going eco friendly and getting a new condensing boiler. Its gonna cost a bit but with the new TRV's that have to be fitted and 'boiler interlock' Thats posh talk that means room stat
your bills will come down a bit.
Normally I say take whatever boiler you have and run it into the ground but the savings you could make do seem worth your while.
Try this
HOME ENERGY CHECK but dont forget to take money off the so called savings to cover the cost of the new boiler
Another important point before you lash out on a new boiler... How is your insulation? Theres no point in crying about bills if your insulation isn't up to scratch. Insulation pays for itself from day one and never stops. By far the best investment
Some people like to heat up their conservatory. Like minded people stand in the street and give money away. Trouble is I never seem to come across any of the latter
EDIT:-
I just came back to bounce some figures about
145 Kwh every 24hrs at the moment, say £11 or so each day.
I randomly selected green tariff from EDF. Whatever way you look at it Electric is 2 to 3 times more expensive
Electricity
Electricity unit costs
Than Band A rate will apply to a block of 900 kWh each year. This will be applied on a pro rata basis for each day covered by the bill and rounded to the nearest whole kWh. E.g. for a bill covering 90 days the first 222 kWh used in that billing period will be charged at the Band A rate. All other day kWh will be charged at the Band B rate.
Band A 20.61
Band B 10.22
Gas
Gas unit costs
The Band A rate will apply to a block of 2680 kWh each year. This will be applied on a pro rata basis for each day covered by the bill and rounded to the nearest whole kWh. E.g. for a bill covering 90 days, the first 661 kWh used in that billing period will be charged at the Band A rate. All other kWh will be charged at the Band B rate.
Band A 7.35
Band B 3.209
Hold on though Your boiler is maybe 65% efficient so you are only getting 65% of the 145KW and thats only 95KW
A modern boiler is 90% efficient so you would need 106KW giving you a saving of £3 a day
during winter months
Now if every day was winter that would be £1095 a year based on your current tariff. I reckon it would be fair to half that sum and call it your saving. A new boiler could pay for itself in say five or six years
One thing about electric is its 100% efficient so you would only need 95KW but at 20p a KW thats still £19 a day