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Over 1 million trees. And growing.

Our members with carbon-cutting upgrades have now helped us plant a whopping 1 million trees! That’s a whole lot of carbon fighting right there.


Trees. They’re not just nice to look at. These wooden wonders literally remove carbon dioxide from the atmosphere – and that’s why we love them. We’re on a journey with our members to reach zero carbon, and trees are helping us get there. On behalf of the great people out there with carbon-cutting upgrades, we’ve been planting them all over the UK since 2015.  

So thanks to all the folks who have come together to create greener spaces and cleaner air for us all to enjoy. See. Trees are powerful things.


Planting by numbers – what we’ve all achieved since 2015

Want to help us plant more trees?

Starting your journey to zero-carbon living and helping us plant more trees is easy. Simply add our OVO Beyond upgrade to your plan, and we’ll plant trees on your behalf every year you’re with us.

Upgrade now

More wins for the planet!


Planting 1 million trees isn’t the only thing we’re celebrating with our carbon-cutting upgrade members. They’ve also helped I Dig Trees win Charity Times Awards’ Corporate Social Responsibility Project of the Year for 2019.

Meet our tree planters 

Our tree planting efforts couldn't happen without the help of TCV and our wonderful volunteers. This year we celebrated National Tree Week with communities across London, coming together to make a difference.



Our inspiring partners

We're proud to be working with The Conservation Volunteers (TCV). Every day across the UK, TCV work to create greener spaces for everyone to enjoy – making a truly lasting impact on local people’s health, prospects and happiness.

The leafy lowdown

Year on year, we’ve certainly had a lot to shout about! Download our I Dig Trees reports to get to the root of our achievements.

I Dig Trees 2019-2020

Frequently Asked Questions

This upgrades your electricity from 50% renewables (on our standard plans) to 100% renewables.

This means that every unit of your electricity will come from a source like wind, solar, and hydro – so you’ll effectively give dirty fossil fuels the cold shoulder.

We also plant 3 trees a year on behalf of everyone who chooses the OVO Beyond upgrade. It’s part of our ‘I Dig Trees’ initiative that helps reduce carbon emissions even further.

Keen to learn more about our fuel mix? See a breakdown of exactly where your energy comes from in our ‘fuel mix disclosure’.

Ofgem won’t let any energy company call its plan ‘green’ unless it’s making a positive environmental impact. That’s something beyond buying renewable electricity certificates – the paperwork that proves we buy the equivalent amount of renewable electricity for every unit you use.

Instead of looking at this as an obligation, we see it as an opportunity to do something new and exciting. Something that adds value and impact for our customers who choose 100% renewables.

There are many ways to meet what the energy industry calls ‘the additionality requirement’. A few years ago we asked our members what else they’d like as part of their ‘green’ plan and they said they want positive impacts on people and the environment, right here in the UK.  

We then got to work designing a programme and finding partners to help support local organisations and local volunteers improve their local green spaces. The result? I Dig Trees.

The Conservation Volunteers (TCV) helps people reclaim local green places through environmental projects. And we’re working with them to deliver I Dig Trees.

TCV tells us that right now, one third of the UK's green places are in danger of being lost or degraded. And they’re on a mission to safeguard and improve theses spaces – that’s your local parks, school grounds, river banks and community areas.

So far, this brilliant organisation has helped hundreds of thousands of people each year to reclaim local green spaces. Through their own environmental projects and a network of over 2,000 community groups, TCV puts people back in the driving seat, taking responsibility for their own local environments right across the UK.

The green spaces we use and enjoy day-to-day are vulnerable. In fact, an estimated 10,000 playing fields were sold off between 1979 and 1997.

Places like these don’t have any kind of special protection – and the bad news is that they’re all under threat right now. Why? Because local councils are having to do more with less – which means cutting budgets for ‘non-essentials’ like caring for green spaces.

TCV believe that neglecting green spaces is a false economy. And we agree with them – it doesn't take long for a once-much-loved park, or other open space to change. By neglecting our green spaces, we risk letting them become magnets for anti-social behaviour and a cost to society and the environment. So spending a little on safeguarding, protecting and looking after these places now, might save our stretched councils much-needed ££££s in the longer term.

I Dig Trees, and the work of TCV in general, is about much more than just caring for nature. A looked-after green space is not only a ‘home for wild things’, including critical pollinators like bees; it’s also a sponge for CO2, an asset to local communities and an impactful project for local volunteers.

It depends on the tree, its location and its lifespan. UK native deciduous broadleaf trees – the varieties we’re planting – do a particularly good job. The carbon-counting professionals at Carbon Footprint say:

"The amount of CO2 a tree will offset depends on many factors, such as the type of tree, where it is planted and the amount of room it has to grow. On average, one broad leaf tree will absorb in the region of 1 tonne of carbon dioxide during its full life-time (approximately 100 years)."

We hope I Dig Trees will make a hugely positive impact, both in terms of society and CO2. But quantifying CO2 impact isn’t a simple equation, because trees make a positive difference over their entire lifetime and existing methodologies are designed for large forests.

The Conservation Volunteers (TCV) are experts when it comes to finding green spaces to plant in the UK – and urban spots are top of the list. That’s because these places make the greatest difference to local communities.

TCV put down roots in places like:

  • Local primary schools.  

  • Old people’s homes.

  • Housing association land.

  • Local secondary school or adult education colleges.

  • Parks, in partnership with local authorities and parish councils.

  • Private land with public access (like popular footpaths, with the landowner's consent).

  • The edges of sports’ grounds.

  • Roundabouts and traffic islands.

Absolutely. Volunteering is at the very heart of I Dig Trees because:

  • Local organisations know what’s best for their green spaces.

  • Doing good for others is also good for us.  

In fact, a research review published in BMC Public Health showed that people who volunteer have a 22% lower mortality rate than those who don’t. So it’s good news that we’re planning to create 37,000 volunteering hours this year.

Keen to join in? Become an I Dig Trees volunteer.

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