How green is my energy supplier?

Understanding the Green Credentials of Energy Suppliers

So Energy is proud to have been recognised by Matched in their Clean Power Index as having one of the best green tariffs in the market. You can see how we compare to other suppliers on the Matched Clean Power Index.

We're also the only supplier that lets you vote on what energy technologies we invest in. We commit to covering the energy source through our Power Purchase Agreements (direct contracts with renewable generators, PPAs) or by purchasing Renewable Energy Guarantees of Origin certificates (REGOs) for every customer that votes, using published Ofgem verage electricity consumption.

What Does it Mean for an Energy Supplier to Be Green?

A green energy supplier provides electricity from renewable sources like wind, solar, and hydro. It’s about more than just selling energy, it’s about reducing carbon emissions and supporting a cleaner future.

The biggest factor in being truly green is where the energy comes from. Renewable sources don’t rely on fossil fuels, which means lower carbon emissions and less impact on the planet.

A green supplier doesn’t stop at renewables. They set clear targets about how they reduce carbon emissions, invest in sustainable practices, and work towards a net-zero future.

Transparency in Energy Supply Chains

Honesty matters. A genuine green supplier will share their fuel mix so you can see exactly how your energy is generated. This is called their fuel mix disclosure.  

REGO (Renewable Energy Guarantees of Origin) certificates prove that the electricity supplied is backed by renewable generation. They’re key to verifying green credentials.

Avoid greenwashing: Watch out for vague promises. If a supplier claims to be “green” without showing their fuel mix or REGO-backed evidence, it could be greenwashing.

Metrics to Evaluate Green Energy Suppliers

What is the Matched Clean Power Index?

The Matched Clean Power Index measures how well suppliers match renewable energy generation with customer demand. It’s a trusted way to see who’s truly green.

It’s not just about buying renewable energy, it’s about timing. The index looks at whether clean power is generated when customers use it, making the match more meaningful.

Green supply scores show how suppliers stack up. The higher the score, the better the match between renewable generation and customer consumption.

How does So Energy perform in the Matched Clean Power Index?

Our Ranking
We’re proud to rank among the top suppliers for matched renewable energy. It shows our commitment to real, measurable sustainability. See how on their Clean Power Index.

How We Match Energy to You
We source 100% renewable electricity and work hard to align generation with demand, so your energy use supports a cleaner grid.

Why It Matters
Our performance isn’t just a number. It’s part of our bigger goal: helping the UK move towards a net-zero future.

Factors That Influence How Green an Energy Supplier Is

Energy Sources and Fuel Mix

Our Renewable Sources
We supply 100% renewable electricity from wind, solar, hydro, and biomass—clean power that helps cut carbon and protect the planet.

What About Fossil Fuels and Nuclear?
Fossil fuels like coal and gas still play a big role in UK energy generation, along with nuclear. That’s why fuel mix transparency matters, so you know exactly what you’re getting.

Why Fuel Mix Disclosures Matter
A green supplier should show their fuel mix clearly. It’s the easiest way to check if your energy is truly renewable.

Additionality and Renewable Energy Development

What Is Additionality?
Additionality means going beyond buying renewable energy, it’s about creating more of it. True green suppliers invest in projects that add new clean power to the grid.

You can see our Additionality Statement here, with details of the wind farms we support.

Investing in the Future
From wind farms to solar projects, investment in renewable infrastructure is key to building a sustainable energy system.

The Role of PPAs
Power Purchase Agreements (PPAs) help fund renewable projects by guaranteeing demand. They’re a vital part of supporting long-term green energy growth. You can see ours in our Additionality Statement.

Carbon Emissions and Environmental Impact

Measuring Carbon Footprint
Every energy supplier has a carbon footprint. Measuring greenhouse gas emissions shows how clean, or dirty, their electricity really is.

Reducing Carbon in Supply
Green suppliers work to cut carbon from the grid by sourcing renewables and supporting low-carbon generation.

Why It Matters Long-Term
Choosing green energy today helps slow climate change. It’s one of the most impactful choices you can make.

Choosing and Evaluating a Green Energy Supplier

3 Key Questions to Ask

1. What’s their electricity mix?
2. How much comes from renewables?
3. Do they have certifications to back it up?

Avoiding Greenwashing and Supporting Genuine Green Energy Providers

Spotting Red Flags
Vague claims like “eco-friendly” without proof? That’s a warning sign.

Transparency Is Key
Look for clear fuel mix disclosure data and REGO-backed evidence. Real green suppliers are open about their sources.

Support True Green Action
Choose suppliers investing in renewable projects and additionality—not just buying certificates.

In Summary: Be Green, Be Transparent

Choosing a truly green energy supplier isn’t just good for your bills, it’s good for the planet. By looking for transparency, renewable sourcing, and real investment in clean energy, you can make a choice that helps cut carbon and drive a sustainable future. At So Energy, we’re proud to lead the way with 100% renewable electricity and a commitment to building a greener tomorrow. Check out our renewable energy tariffs, and join us on the journey to net zero.

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