There is no doubt that we are always looking for ways to save some money.
So it might be a shock to find out that there is something really simple to massively reduce your energy bill.
Retired electrical engineer Rodney Birks has revealed his simple trick to lower the lighting costs in his home - and you want to be stupid when you realize what a big difference a small change can actually make.
The 72-year-old from Swindon betrayed The Guardian at the weekend his "hack".
And are you ready for that?
To save money, you only have to change one light bulb.
Replace the bulbs you currently use for energy-saving LEDs.
In addition to cutting his annual lighting bill from a whopping £ 133 to just £ 14, Rodney was able to reduce the amount of CO2 entering the atmosphere.
He claims to have paid about 92 pence for the bulbs - a small investment to save long-term cargoes.
"I probably have more lights in my house than most," he admitted. "LEDs used to be expensive, but have evolved and are now cheaper than most people think.
"The payback period is 10 weeks if you use lamps four hours a day.
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"The lighting accounted for 18% of my electricity bill, now it is only 1.8%."
Rodney, who has spent his life developing tools for automobiles, adds, "Converting your fridge or freezer into an A +++ appliance is likely to add 20% energy efficiency.
"But if you change your lighting, the new LEDs are ten times more efficient than the bulbs they replace, and there's nothing like that in terms of electrical efficiency."
According to LEDBulbs.co.uk, LEDs last up to 50 times longer than incandescent bulbs and provide up to 50,000 hours of illumination.