How does the electricity grid work? 

How does electricity get from where it’s generated to your house 

How does electricity get from where it’s generated to your house?  And what happens when you switch to a renewable electricity supplierWatch the video and read on to find out more. 

How is electricity generated? 

Most types of electricity generation rely on energy being used to turn a turbine and spin a generator. Within the generator, loops of conductive wire are rotated within a magnetic field, which generates electricity. 

At Good Energy, we buy 100% renewable electricity from four types of generator, all over Britain. Click on each link below to find out how they work.

Electricity is also generated from non-renewable sources including nuclear, gas and coal (although coal is less commonly used nowadays because it causes a lot of carbon emissions).  

How is electricity supplied to my house? 

The electricity network is made up of two main parts:

The transmission network 

This network is made up of high voltage electricity wires and pylons that transport electricity from large power stations. Before it enters the transmission network, electricity passes through a transformer to be stepped up to a higher voltage to prevent it losing too much energy along the way. 

The distribution network 

This network transports lower voltage electricity on local networks and connects to peoples’ homes. Electricity from the transmission network passes through another transformer to be stepped back down to a lower voltage before it enters the distribution network. 

Due to their smaller size, many of the generators that Good Energy buys 100% renewable electricity from are connected directly to the distribution network, rather than the transmission network.  

Good Energy customers are on average never more than 5 miles away from their nearest renewable generator. This means you’re supporting independent generators who are helping make your local community greener. 

Will my electricity supply be interrupted when I switch supplier? 

No, your electricity supply doesn’t need to be disconnected and reconnected when you switch supplier. Your new supplier simply takes over the details of your electricity supply, such as your electricity meter number, so that you’re registered with them as a customer. 

Does your electricity supply change when you switch to a renewable supplier? 

No - electricity will still reach you through the grid, which includes power from a mix of renewable and non-renewable sources. The difference is that a renewable supplier like Good Energy makes sure that they supply the grid with enough 100% renewable electricity to balance out the amount that you use at home. 

How does Good Energy make sure my electricity is renewable? 

Good Energy owns two wind farms and six solar farms. We also buy power directly from over 1,600 local renewable generators across Britain. Altogether, we make sure that we supply enough 100% renewable electricity to the grid to match what you use at home.  

The more customers we get, the more renewable power we have to buy. This helps increase demand for renewable electricity and encourage new generators into the market, helping make the whole grid greener.   

Unfortunately, many other suppliers that claim to offer green tariffs don’t buy electricity directly from renewable generators. Learn about greenwashing to find out why this is a problem. 

Can I help make the electricity grid greener? 

Yes! You can help to make the grid greener by switching to a genuinely green supplier, like Good Energy. Another way you can help is by getting a smart meter. By providing the grid operator and energy suppliers with more detailed information on how much energy homes use throughout the day, smart meters lay the foundation for a smarter, more efficient grid that’s better able to make the most of power from renewable sources.  


If you’re a Good Energy customer, we will contact you when we are installing smart meters in your area. 

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