Save up to £220* on our competitive green tariffs plus a £50 donation to Sustrans and a free boiler service (usually £84)!
We are proud to be the energy partner for Sustrans, helping people switch to green energy that leads to cleaner air - and better overall health - for everyone. Not only that, but we’re donating £50 to Sustrans for each and every person who switches their energy supply to us. Either start your quote below or give us a ring and mention Sustrans.
A journey towards clean air: sign up to our renewable energy and help save the planet.
Sustrans is the charity making it easier for people to walk and cycle. They are custodians of the National Cycle Network. A UK-wide network of signed paths and routes for walking, cycling and exploring outdoors. It connects people and places across the UK and provides traffic-free spaces for everyone to enjoy.
Sustrans works with volunteers, partners, and supporters to care for the National Cycle Network and encourage active travel choices (walking, cycling and scooting) for the school run and commute. They work with local authorities, policy-makers and communities to make walking and cycling a more attractive choice and to create healthier places that benefit us all.
* Savings are compared to standard variable tariffs offered by Big Six Energy Suppliers for an average customer as defined by Ofgem. £25 donation per fuel when the supply goes live
Here’s how it pays to join Tonik...
When you switch your energy supply to Tonik, our award-winning customer service and sustainably priced green energy come as standard, but there’s more – we reward our members for each step they take to help rid our skies of dirty, fossil fuel emissions.
Switch to green energy with us and we'll donate £50 as thanks!
Refer your friends. You get £25 off your bill. They get £25 too.
Get a free gas boiler service through HomeServe usually £84
Switch to green energy in just two minutes
Get a quote
Choose your renewable energy tariff and then we'll take a few quick details.
Leave the rest to us
Sit back. Relax. Feel good about the good you've done for the planet.