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Page last updated icon Page last updated on 9th July 2025

Understanding energy

Energy price cap? Demand flexibility? Time-of-use tariffs? It can all get a bit complicated, but we're here to help.

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Using energy flexibly
Pylons against a blue sky
The Demand Flexibility Service
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What is the energy price cap?
A row of rouses with a blue sky hanging over them.
What are the benefits of time-of-use tariffs?
Image of a sunset or sunrise behind a couple of wind turbines on a green field – the rest of the sky is blue or slightly cloudy.
Energy flexibility: what is peak and off-peak energy?
Pylons in a field at sunset
How smart meters could support Britain’s energy security in the future
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Low-to-no cost numbers or textphone to contact suppliers
An older man holds his phone in one hand and plugs it in to charge with the other.
What to do if you think you need help with energy bills
A young girl reaches up to switch off a lamp.
What is Economy 7?
An older couple using a desktop computer.
How to calculate your energy bill
A cat sitting on a windowsill in an unlit room.
What to do if your power goes out?
The base of wind turbine, with people in high-vis jackets, in the foreground, with more wind turbines and a city in the background.
What is the energy crisis in Great Britain?
Multiple wind turbines in the distance, with a field and flowers in the foreground.
What does net zero mean?
A scenic view from a grassy hill of a park with the London skyline in the background.
How can I reduce my carbon footprint?
Cars on a motorway.
What is global warming and what can I do about it?
An air source heat pump installed outside of a home.
How do heat pumps work?
Wind turbines in a field against a sunny sky.
What are wind farms?
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What is hydropower and how does it work?
A wood-burning stove, with a lit fire and chunks of wood sitting in front of it.
What is biomass energy?
Turbines in a tidal barrage.
How does tidal energy work?
Field of solar panels with sunset sky
How do solar panels work?

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