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Electricity & Gas in London, Greater London in 2021

Finding the right energy supplier for your home in London

Last updated: September 2021.

Did you know that a majority of UK residents are actually overpaying for their energy supply?! Many energy consumers are very unaware of alternative options that they can use to get their energy for a lower rate. In fact, switching energy suppliers can actually reduce your energy costs by around £400 a year on the power that you need to keep your house running.

Each property has different energy requirements and now that you are living in London, Greater London, it is the perfect time to reevaluate your energy supply. No matter what type of property you are living in, finding the right energy supplier for your needs is important. In London there are 3,231,685 properties for 8,088,142 Londoners, and all of these properties have their own unique needs, so finding the right energy tariff and switching energy suppliers can have a significant impact on your budget.

In this article you will see that we've made the effort to break down the cheapest, the most reliable and even the most popular energy suppliers in London. Finding the right supplier can save you a lot of time, money and stress going forward so we suggest that you let us help you look over your options for energy in London.

Energy in your London district

The following pages give you specific information on the energy supply in your very own district of London.

How to get your energy supply set up for a new home in London

Welcome to London!

As a new resident of London you will now be one of 8,088,142 Londoners. Currently there are 3,231,685 households in London, with an average of 2.5 people per household. This makes London the / largest city in the UK. London may seem like a big or small city to you, depending on where you have moved from, but you will get familiarised with it quicker than you expect. In case you aren't familiar, London is part of Greater London, which has a population of 13176048. Now that you are getting settled in London, you will have to think about powering up your new home, and whether it be by transferring your old supplier over to your new property or switching to a new supplier, we can help!

Need assistance moving to London? Switch Plan can help with that!

If you are moving to London you will need to sort out your new energy supply as well as cancel the one you are currently on. There is the possibility to transfer it over but energy experts do not recommend this. Follow the steps below for settling your energy bills and setting up your new contracts.

  • Inform your current supplier of the day you are moving house. Forgotten your supplier name, visit the Ofgem website or call London’s distribution network operator, UK Power Networks at 0800 029 4285.
  • Meter reading of your current house, right before moving
  • Once at your new property, take a meter reading
  • Consider what factors are important to you when it comes to the energy supply in your new home.

We at Switch Plan are here to help you when moving to Greater London. We will deal with the switch to your new energy suppliers and it is completely a free service. All it takes is one 10 minute phone call with us and we can help you make significant savings on your new energy bills. Just inform us of what you are looking for in a supplier and tariff and we will advise you on the best options available specifically for you and your new property. Get in touch with us on the following number 0330 818 6224.

Can I keep my current energy supplier if I move to London?

While this may seem like the natural idea, it is not always the best option as switching suppliers during a move might save you a lot. Your new house will likely have different energy requirements and by transferring your current supply over it may be less efficient and as a result, you may be losing money. This is why it is always important to consider switching suppliers when moving home. There is a good chance that you will find an energy supplier that is the perfect fit for your new home. All it takes is one short phone call with one of our energy experts on the following number 0330 818 6224 to save you money and find you the best energy supplier for you. This service is free for all those that call and will save you a considerable amount of time compared to the effort it would take to research energy suppliers and tariff deals on your own.

If the potential savings don't interest you and. you are certain that you'd like to stay with the same supplier for your gas and electricity then you must be wondering how to transfer your energy supplier to your new home in London.

First thing you must check the following:

  • Whether or not your previous tariff is available in Greater London.
  • What kind of energy meter your new home has and whether it is compatible with your old tariff.
  • Whether your new home runs on both electricity and gas. This will affect whether you can get a dual fuel discount.

If this is all in check then contact your energy supplier in London or Switch Plan directly and we will deal with the process. Before calling them make sure you have your new address and postcode at hand.

Even if the house is supplied by your current supplier, make sure you do make the switch because you will automatically be switched to a tariff plan that may be different from the one you were previously using. The rates of these tariffs that they switch you to are usually less competitively priced than other available tariffs, so you may prefer to transfer over your previous rate or even switch suppliers altogether.

It is important to note that some suppliers and tariffs (generally fixed tariffs) have exit fees. You will be able to check this in the tariff details of your contract. If you want to learn more about exit fees be sure to check out our article on comparing energy plans, to make sure you aren't caught out by any surprise exit charges.

Who you'll need to notify before you move to Greater London

Before moving to your new home, or even if you have already moved, don’t forget to contact the following local places to inform them of your move and change of address. You don’t want all your mail being sent to your old address.

  • Broadband and phone providers
  • Bank
  • DVLA to change the address on your driving license.
  • Energy suppliers
  • TV licensing authority
  • Local council and electoral roll

It is also a good idea to get your mail forwarded to your new address. To do this, you can visit your local post office and ask them to forward your post to your new address in Greater London.

How do you connect to the energy grid in London?

It is probable that your new home is already connected to the grid in Greater London, however, if you are moving into a new build you need to ensure that it has been connected to the grid in order to get an energy connection.

  • Contact National Grid Energy Transmission (NGET) 0800 688 588 to arrange a pre-application meeting. This will be about workload, timeline and cost.
  • Filling in application forms and submitting them to the Electricity Systems Operator (ESO). Don’t be surprised about the application cost.
  • A team will visit your house and give you a quote 1 to 3 working weeks later.
  • Thorough time for construction necessary to set up the connection to the grid.
  • Reach out to either your energy supplier or your regional DNO, $distribution_network_operator, to ensure energy is flowing properly to your new address.

As you can see it is quite a timely process to get a connection to the grid, so try not to leave it until the days before moving in. It’s best to organise it alongside the build of your new property.

Which energy providers are active in London?

London has several energy suppliers to choose from, but it may be difficult to decide which one is the right fit for you. You could be looking for the cheapest energy supplier in London or maybe you're looking for the most popular supplier in London. Either way, we have you covered!

Below you'll find information on the cheapest, most popular and even the most reliable energy suppliers in the city of London.

Who is the main energy supplier providing energy to Londoners?

The most popular energy provider in Greater London is British Gas, and indeed in most of Greater London notably in the county's biggest cities such as London, New Addington and Redbridge. However just because British Gas is the most popular provider in London, does not mean that they are the most suitable supplier for you given your needs. It is important to remember that you are free to change your energy supplier at any time and if you have been supplied energy by British Gas for a long time now, it is likely that you are overpaying. Comparing energy plans and providers can help you make some considerable savings on your energy bills. At Switch Plan our experts can help you find a better deal by switching providers and as a Londoner you could save up to £400 pounds by switching with us. It is completely free and just takes a quick phone call to get started. tens of thousands of households in London are able to switch from one energy plan to a cheaper one in order to start to make impactful savings.

To discover the tariffs of some of the main suppliers in London, visit our dedicated pages by clicking on the links below:

Cheapest energy suppliers for London

"There are a number of energy suppliers in London to choose from, but if you're interested in saving as much as possible then it may be stressful to sort through all of the options. To make this process easier for you, we've developed a list of the UK's cheapest standard variable tariff plans, which have a great chance of being available in London. While there is always more to consider than just price, it is an important factor to consider when choosing your energy supplier.

See the pricing comparison below, which consists of the yearly electricity and gas costs as well as the annual average total costs for each supplier's standard variable tariff:

Supplier Name Standard Variable Tariff Name Electricity Average Annual Cost Gas Average Annual Cost Annual Average Total Costs
AVRO Simple Energy #REF! #REF! #REF!
Outfox the Market One Green Flex #REF! #REF! #REF!
Orbit Energy 5% OFF 4 LIFE #REF! #REF! #REF!
Igloo Energy Igloo Pioneer #REF! #REF! #REF!

With so many energy suppliers to choose from, make sure you decide one based on your needs and requirements. Don’t hesitate to give us a call if you have any queries related to your current or future energy supply. Our experts will be glad to help you! You can reach them at 0330 818 6224.

What are the best electricity companies in London?

It is impossible to give a universal answer as to who is the best energy provider in London because that can be interpreted in so many different ways. Not to mention that every customer has their own unique experiences when dealing with the company that provides their electricity or gas. However, when enough customers repeatedly seem to have the same experiences with a particular company, it's fair to us to use this a reliable rating system.

As a result we believe that proper due diligence and current customer insights are an enourmous part of seperating the great suppliers from the good ones. These suppliers tend to go the extra mile for their customers and a result seems to consistently leave them satisfied. While there are a tremendous amount of factors that can go into a customer's opinion of their energy providers, such as reliability, price, responsiveness, or professionalism, as a result, we find that some of the most insightful customer feedback can be found on professional review websites, such as Trustpilot.

Below, you can find a list of the five most highly rated energy suppliers available throughout the UK on Trustpilot:

How to make your energy bill cheaper in London

Now that you've moved to London you may be wondering how you can keep costs down, after all, moving can be quite costly. One of the easiest ways that you can cut costs is through some energy-saving tips and tricks that could lead to significant savings over time.

For your convenience, we've developed a shortlist of our favourite life hacks for reducing your bill.

  • Convert to an Economy 7 Meter: E7 Meters offer cheaper electricity rates at off-peak times like at night, so if that's when you use the most power you could save a lot!
  • Check your new home's EPC rating. This will tell you how energy efficient your home is, if it is low, then you could consider installing additional insulation or double-paned windows which allow less heat to escape.
  • Cut down on your consumption; if you can hang dry clothes rather than use the dryer, only turn on the aircon when you need it, and unplug items when you aren't using them.
  • Confirm that you are using energy-efficient home appliances, regularly used items like refrigerators, washers and dryers should have a high-efficiency rating. Upgrading these appliances may be expensive, but the savings will be noticeable over time.
  • Install energy-saving lightbulbs.
  • Don't crank up the heat, even if it is cold outside.

Sustainable and renewable energy in London

Nowadays, consumers actively seek out ways to help the environment, and as a result are happy to pay a certain premium to ensure that the product or service they are using is sustainable or responsibly sourced. In regards to renewable energy in London, we go into detail about average energy use, and what suppliers you can opt for to ensure that you are powering your home in an environmentally friendly way.

London’s greenest energy providers

There are a number of suppliers throughout the UK that claim to offer green, renewable or sustainable energy but few of them can actually back up their claims. As a result of green and renewable becoming major buzzwords within the energy market, every supplier is racing to slap the title of sustainable on their energy supply. However, because of REGO certificates suppliers can essentially pay their into claiming their energy is green, all the while they are actually using harmful sources like fossil fuels to generate their power supply. A few genuinely sustainable energy suppliers currently trading in the UK include:

How to reduce your carbon footprint while living in London

Reducing your carbon footprint in London might sound like a big undertaking but it actually isn't, and by doing so you can actually decrease your energy considerably depending on how much you cut back your consumption. Below we've made a shortlist of low effort actions you can take to help the environment and lower your energy costs at the same time.

  • Light your home with energy-efficient LED or CFL bulbs.
  • Replace your LCD TV with an LED TV that offers superior picture quality but uses less energy.
  • Turn down your electric heating a notch. Even a change of a single degree could save up to £80 on your annual energy bill.
  • Install a smart thermostat that allows you to reduce the amount you spend on heating without compromising comfort. These cost around £220 but can save you over £350 per year on your heating bills.
  • Unplug your TV, set-top boxes, games consoles etc. when not in use, these electronics can still be using energy when they are in standby mode.
  • Do your washing at night; washing machines, dryers and dishwashers can require a lot of power to operate. Using these appliances at night tends to cost less and limiting the time you use them could lead to less energy consumption.
  • A A+++ rated fridge/freezer, for instance, will save over £300 on your energy bills throughout the product's lifetime.
  • If you can, layer up while relaxing at home rather than cranking up the heat.

Frequently asked questions about energy in Greater London

Does it cost money to switch energy suppliers in London?

It may depend on the contract that you are in with your current supplier in London, because some tariff contracts include exit fees that you will have to pay if you want to switch suppliers before the contract is close to expiring. If you are not in a fixed contract that has an exit fee, you can switch for free whenever you'd like.

Why is my energy bill different after moving to London?

The total of your energy bill in London is made up of a combination of variables, not just the amount of energy that you use there are other factors such as your location that can actually drive up the cost of your energy. As a result, even if every other variable regarding your energy use is consistent, simply moving to certain regions of the UK could see your energy bill rise because simply of its location.

Can I generate my own electricity if I live in London?

The answer to this question will depend on the type of home that you have London, some homes are capable of equipping solar panels on the roof and some can even install personal wind turbines. These systems can generate power on your own in tandem with the power you are supplier by your energy provider. However, not all homes can generate their own power so it will depend on the property, for instance living in an apartment complex may limit your ability to generate your own energy.

What do you need to know about your gas & electricity distribution network operators in London?

Distribution network operators (DNOs) for gas and electricity provide the necessary maintenance on the energy infrastructure throughout the UK. These are the people that respond to ensure gas lines are appropriately maintained and ensure that powerlines are supported with the right amount of care. Knowing who the DNOs in London can be very helpful in a pinch.

How to contact London’s energy distributors

Londoners can reach out to Greater London's local gas or electricity distributors to discuss the following topics:

  • Power shortage
  • Connections
  • Safety regulations
  • Job opportunities
  • Innovations

If you want to contact your energy distributors by phone, below is a table with their opening hours and telephone numbers in case of an emergency related to your energy supply.

Distributor Number opening hours Telephone number
Greater London UK Power Networks Emergency Number 24/7 0800 31 63 105
Greater London UK Power Networks Non-Emergency Number Monday to Friday 9.00am to 5.00pm 0800 029 4285
Greater London Cadent Gas Emergency Number 24/7 0800 111 999
Greater London Cadent Gas Non-Emergency Number Monday to Friday 9.00am to 5.00pm 0345 835 1111

What to do if you experience a power cut in London

If you are experiencing a power cut in London the first thing you should do is check your fuse box to see if a fuse has tripped in your home's electrical circuit. If so you should be able to switch it back on quite easily. If this is not the case it is likely that there is a power cut in your area, so speak to your neighbours or have a look outside your window to see if other houses in London are experiencing the same issue. If your area is experiencing a power cut you should call your local Distribution Network Operator at 0800 029 4285 and let them know. In London, your local DNO is UK Power Networks. They will send a team out to resolve the issue. Generally, this does not take very long, however, it depends completely on the circumstances and the reason for the power cut. Be sure to have a flashlight in your home in case of a power outage.

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