Best energy suppliers: keep costs down in 2020

Find the best energy supplier for your home with our expert guide

Best energy supplier: Tado smart thermostat on wall in living room
(Image credit: tado°)

Looking for the best energy supplier for your home? There are a whole lot of companies vying for your business, including both the big six names – British Gas, EDF Energy, E.on, Npower, Scottish Power and SSE –  and smaller companies, some of which you may not have come across before. Our guide will help you find a supplier that ticks the boxes for cost, and customer service, too. And if going for a green supplier is part of your criteria, you’ll find our top choice listed as well.

Want a good energy deal right now? Our energy comparison tool will help you find the best offer for your home.

What is the best energy supplier?

Our top pick of energy suppliers is Bulb Energy. The company wins plaudits for its customer service as well as offering money-saving deals. It’s actually a green energy supplier, but it stands out against all-comers. Prefer to get your energy from one of the big six? Our selection is E.on, which offers a wide range of tariffs and competitive deals. No time to read down? Here are all our category champs at a glance.

The best energy suppliers

Best energy supplier: Bulb

(Image credit: Bulb Energy)

1. Bulb Energy

Best energy supplier

Specifications
App?: Yes
Renewable electricity?: Yes
100% Carbon offset programme?: Yes
Single tariff or range: Single
Exit fees: No
Reasons to buy
+Highly rated for customer service+Consistently good value
Reasons to avoid
-None!

What they’re good at
Bulb Energy makes things easy with just one tariff on offer, so you can save yourself the chore of comparing the pros and cons of various deals. There are no exit fees either, meaning if you find a better deal somewhere down the line, you won’t pay. Even better, if your current supplier charges you an exit fee, Bulb will refund it. It’s usually among the best deals available.

What else you need to know
Bulb Energy is a green energy supplier: electricity is 100% renewable from solar, wind and hydro sources, while gas is 100% carbon neutral and some of the gas the company buys comes from renewable sources.

Be aware that the tariff offered by Bulb Energy is variable. In other words, if you’re after a price you can be sure about for a fixed period of time, this isn’t the energy supplier for you. However, if you can accommodate change in what you pay, there is the advantage that if wholesale prices go down, you’ll save.

eon energy logo

(Image credit: eon)

2. E.on

Best big six energy supplier

Specifications
App?: Yes
Renewable electricity?: Yes
100% Carbon offset programme?: Yes
Single tariff or range: Range
Exit fees: Possibly
Reasons to buy
+Security of large energy supplier+100% renewable electricity
Reasons to avoid
-Likely to be beaten on price by non big-name suppliers

What they’re good at
There’s a good range of tariffs offered by E.on – both fixed over a specified period and variable versions, so there should be a deal to suit your current situation. All residential customers get 100% renewable electricity so you can feel the green glow when you use the company as your supplier.

What else you need to know
Be aware that E.on’s fixed tariffs require you to have smart meters (one for gas and one for electricity) installed. You don’t pay for this, however, and if the company can’t install the meter you still get the tariff you signed up for.

There’s a tariff available for the drivers of electric vehicles and plug-in hybrids.

Green Network Energy

(Image credit: Green Network Energy)

3. Green Network Energy

Best value energy supplier

Specifications
App?: Yes
Renewable electricity?: Percentage varies according to tariff
Carbon offset programme?: No
Single tariff or range: Range
Exit Fees: Possibly
Reasons to buy
+Good customer feedback+Fixed and variable tariffs
Reasons to avoid
-Not 100% renewable electricity on all tariffs

What they’re good at
With frequent appearances near the top of price comparison sites, Green Network Energy can help you get value for your money. There is a choice of tariffs, but not an overwhelming amount to consider, which can make things simpler. If you generate renewable energy and export it to the grid, the SEG (smart export guarantee) tariff will pay you.  

What else you need to know
The company – which started in Italy – invests in renewable energy technology, with wind, solar, biomass and biogas projects. Feedback from customers is rated as great on Trustpilot, although some have reported confusion over reporting readings from Economy 7 meters.

Best green energy supplier: Octopus

(Image credit: Octopus Energy)

4. Octopus Energy

Best green energy supplier

Specifications
App?: Yes
Renewable electricity?: Yes
100% Carbon offset programme?: Yes
Single tariff or range: Range
Exit fees: No
Reasons to buy
+Great customer feedback+Green tariff offers full carbon offsetting for gas+Among cheapest tariffs
Reasons to avoid
-None!

What they’re good at
Octopus Energy is our number one green energy supplier, but highly competitive prices and glowing customer reviews have made the company – which only launched in 2016 – a popular supplier choice even when the green part isn’t factored in. It was Uswitch energy supplier of the year 2020, and garners five star ratings. There are both fixed rate and variable tariffs to choose from, and all the electricity is 100% green, while you can opt to carbon offset the gas you use.

What else you need to know
There’s a smart export tariff available for those who can feed excess renewable energy they’ve generated back into the grid. There’s also a tariff for electric vehicle drivers, and a tracker tariff where prices change daily based on wholesale energy costs, which is the price available to all suppliers.

Tonik Energy logo

(Image credit: Tonik Energy)

5. Tonik Energy

Best customer-friendly energy supplier

Specifications
App? : No
Renewable electricity?: Yes, 100%
100% Carbon offset programme?: Yes
Single tariff or range:: Range
Exit fees: Yes
Reasons to buy
+High customer ratings+Competitive pricing+Commitment to renewables
Reasons to avoid
-Not the most user-friendly website

What they’re good at
Tonik Energy says it’s committed to supplying green energy at an affordable price, and customer feedback shows it’s achieving this and keeping them happy while it does so. It has both fixed and variable tariffs to select from if you sign up. You can earn interest of 3% on the first £1,000 of credit balances on some tariffs.

What else you need to know
It can be hard to track down the information you need on the website. Some customers report issues receiving closing credit refunds and final bills.

The company isn’t just an energy supplier. It also sells solar panels, electric vehicle chargers and the Tesla Powerwall home battery storage.

Find the best energy deal for your home

Find the best energy deal for your home | Real Homes and MoneySuperMarket
Use our energy comparison tool to find the best green energy deal for your household in minutes. Simply filter your results to show green energy suppliers, choose your tariff, and we'll take care of the switch for you. Plus, because we’ve partnered with leading comparison site MoneySuperMarket, you'll get access to exclusive energy deals that you won’t find elsewhere.View Deal

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