The Telegraph has taken a deeper look at some of the best ways to save energy in ways that you may not previously have thought of.

We all know we should consider switching supplier and turn the thermostat down a notch. But, now that energy companies including British Gas, npower, SSE and Scottish Power have announced price rises for the winter, here are 10 less well-known – but highly effective – ways to save money on gas and electricity.

1. Buy a halogen oven It can roast a chicken in 30 minutes. A halogen oven uses 75pc less electricity than a conventional electric oven. When you combine this lower use of power with the 50pc faster cooking time you are can see a big reduction in your electricity bill.

Cost: £70-£100. Savings: depend on use

2. Block your chimney An unblocked fireplace can mean money up the chimney – hundreds of pounds each year. You can cap your chimney or, if you use it occasionally, block the draught with an inflatable chimney balloon. Another alternative is the ingenious Heatsaver transparent perspex fireplace shield that lets you see your fireplace but seals it when not being used – and is easily removed when you want to light your fire.

Cost of fireplace Heatsaver: from £80. Savings: up to £153 a year

3. Install a voltage optimisation device The difference between the voltage fed into your home and what your appliances need could mean that a standard appliance takes more than 4pc more current and consumes almost 9pc more energy than necessary.

Evo Energy says the technology could save you up to 10pc on your electricity bills. A voltage optimisation device will need to be installed by a professional electrician. It won’t work on ovens, hobs, showers, immersion heaters and heaters, but it works well with washing machines, tumble driers, dishwashers, televisions and lighting. Savings for fridges and freezers could be more than 16pc.

Cost: typically £550 including installation. Savings: likely to be £50-£135 a year

4. Get shower savvy Modern high-power showers can use as much water in five minutes as it takes to fill a bath. Energy-efficient showerheads and faucet aerators can reduce the amount of water delivered from taps and shower heads by 50pc but still allow you to enjoy an invigorating shower. You save on your water bill (if you have a meter) and on the energy required to heat your water.

Tests by Which? show that a £25 water-saving shower head can pay for itself in a year. Manufacturers claim the savings can be so great in some homes that it pays for itself in three months.

Cost: £18-£45. Savings: could be around £70 a year

Please click here for the full list.