How Renewable Is Your Electricity Tariff? Avoid Greenwashing 2026

How renewable is your electricity tariff? Many UK consumers believe they’re doing the right thing by choosing a 100% renewable tariff, but often they’re not. This guide uncovers the hidden truth behind green energy claims and helps you make informed choices.

What Is Greenwashing in the Energy Industry?

Greenwashing occurs when companies exaggerate their environmental efforts to appear more sustainable than they are. In the energy sector, this often involves marketing tariffs as “100% renewable” without actually purchasing equivalent renewable electricity. Fran Woodward, managing director at Good Energy, says this system misleads consumers into thinking they’re making a difference when they’re not.

The Role of Renewable Energy Guarantees of Origin (Regos)

Regos are certificates that prove electricity was generated from renewable sources like wind, solar, or hydro. However, these certificates can be sold separately from the actual power. Suppliers may buy cheap Regos (e.g., solar in summer) to claim their customers’ usage is renewable, even if the electricity supplied came from fossil fuels. This creates a lack of transparency and overstates environmental impact.

How to Verify Your Tariff’s True Green Credentials

To avoid falling for greenwashing, you need to look beyond the marketing label. Check if your supplier directly invests in renewable generation or purchases power through power purchase agreements (PPAs). Ask for details about their Regos sourcing and whether they match your consumption in real-time.

Comparison: Traditional vs. Genuine Renewable Tariffs

Key Takeaways for Consumers

• Always ask your supplier for proof of Regos and how they match your usage.
• Look for suppliers that invest in new renewable capacity, not just buy certificates.
• Check if your tariff is certified by schemes like the Renewable Energy Guarantee of Origin (REGO) or Green Energy UK’s 100% green gas.
• Be wary of vague terms like “green” or “eco” without specific data.

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