How Renewable Is Your Electricity Tariff? Greenwashing Risks 2026

How renewable is your electricity tariff? Consumers believe they’re doing the right thing – often they’re not. This is the core issue of greenwashing in the energy sector, where suppliers market '100% renewable' tariffs without actually purchasing equivalent renewable power. Understanding the mechanics behind these claims is essential for making truly sustainable energy choices.

The Greenwashing Problem in Energy Tariffs

Greenwashing isn’t limited to fashion or food; it’s rampant in the energy industry. Many UK suppliers label their tariffs as '100% renewable' based on accounting practices rather than actual electricity generation. Fran Woodward, managing director at Good Energy, highlights that this system misleads consumers into believing they’re supporting renewable energy when they may not be.

At the heart of this issue are Renewable Energy Guarantees of Origin (Regos). These certificates are meant to prove renewable generation, but they can be bought separately from the electricity itself. Suppliers purchase Regos when they’re cheapest—like solar in summer or wind in winter—to claim renewable status without matching their customers’ consumption patterns.

How Regos Enable Misleading Claims

Regos are tradable certificates that represent the environmental attributes of renewable energy. When a supplier buys a Rego, they can use it to offset their electricity mix, even if the actual power comes from fossil fuels. This creates a disconnect between what consumers pay for and what they receive.

The lack of transparency means consumers overestimate their tariff’s environmental impact. A study by the UK’s energy regulator found that 70% of consumers trust '100% renewable' labels, yet only 15% of tariffs actually match generation with consumption in real time.

What Consumers Can Do to Avoid Greenwashing

To ensure your electricity tariff is genuinely green, look for suppliers that offer time-matched renewable tariffs or direct power purchase agreements (PPAs). These align your consumption with renewable generation, providing real environmental benefits.

• Check if the supplier matches Regos to your hourly usage.
• Look for third-party certifications like EKOenergy or Green-e.
• Review the supplier’s fuel mix disclosure annually.
• Ask about their renewable investment strategy.

Good Energy, for example, offers a 100% renewable tariff that matches your electricity use with renewable generation on a half-hourly basis, ensuring you’re truly supporting green energy.

The Role of Regulation and Transparency

Regulators need to tighten rules around Rego trading to prevent misleading claims. The UK’s energy regulator, Ofgem, is currently consulting on stricter marketing guidelines. Until then, consumers must be vigilant and ask the right questions.

Transparency is key. Suppliers should clearly disclose their Rego procurement methods and whether they match your consumption in real time. If a supplier can’t answer these questions, it’s a red flag.

Key Takeaways for Choosing a Green Tariff

• Don’t trust '100% renewable' labels without verification.
• Seek suppliers that match your usage with renewable generation.
• Understand that Regos can be used to game the system.
• Support companies that invest in new renewable capacity.

FAQ

In conclusion, the renewable electricity tariff market is fraught with greenwashing. By understanding how Regos work and demanding transparency, consumers can make informed choices that genuinely support renewable energy. Don’t let marketing claims fool you—verify your tariff’s real impact today.