Understanding REGO and RGGO: A Complete Guide for Multi-Site Businesses

A REGO relates to renewable electricity generation. An RGGO relates to renewable gas under the relevant certificate scheme. For either type, ask for the scheme name, volume covered, period covered and evidence showing how the supplier allocated the certificates to your contract. Check any reporting claim against your chosen reporting rules. Check evidence for a renewable tariff.

Certification empowers decision-makers to:

• Check how much metered consumption is covered by certificates
• Streamline sustainability reporting across multiple locations
• Align procurement and operational strategy with long-term net-zero goals
• Enhance credibility with investors, clients, and regulatory bodies

Explore our broader overview of green energy solutions on the lead page: Green Energy & REGO Certification.

The Origins and Purpose of REGO and RGGO

The Renewable Energy Guarantees of Origin (REGO) scheme was introduced by the UK government to provide transparency for electricity generated from renewable sources. Similarly, the Renewable Gas Guarantees of Origin (RGGO) applies to biomethane and other renewable gases. Both schemes provide evidence of qualifying renewable generation or production, which buyers can compare against the coverage promised under their contracts.

REGO and RGGO serve multiple purposes:

• They provide independent verification that your energy consumption is renewable.
• They create a standardized system for tracking and reporting renewable energy in the UK market.
• They enable businesses to communicate sustainability achievements credibly to stakeholders.

Ofgem’s REGO scheme issues one certificate per megawatt hour (MWh) of eligible renewable electricity generated. The Green Gas Certification Scheme describes one RGGO per kilowatt hour (kWh) of green gas produced for its biomethane certificates.

How Certification Works: Step-by-Step

The schemes record eligible generation or production and allow certificate transfers to be tracked:

1. Generation and Registration

Eligible producers register and report output under the scheme’s rules. Each scheme uses its own register and unit of measurement.

2. Allocation to Businesses

Suppliers can use certificates to match some or all of a customer’s contractual consumption with eligible renewable output. The certificates document that matching. Electricity and gas are delivered through shared networks.

3. Verification and Auditing

Auditors and regulators periodically review certificate issuance and allocation to ensure integrity. For businesses, this means confidence that sustainability claims are backed by verifiable evidence.

Integrating REGO and RGGO Into Your Energy Strategy

For multi-site businesses, certification is not just a compliance exercise; it is a strategic tool. Integrating REGO and RGGO into your energy procurement strategy enables:

• Aligned purchasing across multiple locations
• Optimized contract flexibility while maintaining renewable sourcing
• Enhanced internal reporting and cross-site comparisons
• Clear mapping of energy usage to corporate sustainability goals

Consider linking certified energy to flexible procurement contracts to ensure that your energy strategy is both sustainable and operationally efficient: Flexible Energy Contracts Explained.

Benefits for Multi-Site Businesses

Implementing certified renewable energy across multiple sites delivers tangible benefits:

1. ESG and Compliance Advantages

Keep the certificate evidence with your consumption records and check what your reporting framework accepts.

2. Risk Reduction and Transparency

Transparent sourcing reduces exposure to claims of greenwashing and ensures that sustainability initiatives are verifiable and defensible.

3. Stakeholder Credibility

Investors, clients, and regulatory bodies increasingly expect verifiable sustainability claims. Certification communicates commitment and accountability across all corporate levels.

Debunking Common Misconceptions

Many businesses assume renewable energy is unreliable, expensive, or impractical for multi-site operations. Certification dispels these myths:

• Reliability: Certified renewable energy is fully integrated into national grids and consistent in supply.
• Cost: While premiums exist, the long-term benefits in ESG reporting, brand credibility, and risk reduction outweigh initial expenses.
• Practicality: Multi-site certification streamlines reporting and operational integration.

Technology and Data Integration

Modern energy management systems integrate REGO and RGGO data into analytics dashboards. This allows businesses to monitor renewable energy adoption in real time, identify savings opportunities, and optimize usage across sites. IoT devices, AI tools, and predictive analytics further enhance operational insight.

Reporting, ESG, and Net-Zero Alignment

Track the reporting period, sites, metered volumes and certificate allocation. Check the applicable reporting rules before using certificates in greenhouse gas accounts or public claims.

Implementation Best Practices

For effective adoption of REGO and RGGO certification across multi-site businesses:

• Audit current energy usage and contracts to identify gaps
• Partner with certified suppliers who provide flexibility and transparency
• Integrate certification data into your energy management and reporting systems
• Train staff and stakeholders to understand and leverage certification benefits
• Regularly review procurement strategy to align with sustainability objectives

Conclusion and Next Steps

REGO and RGGO certification is a strategic enabler for multi-site businesses committed to sustainability. By verifying renewable energy usage, simplifying reporting, and supporting ESG goals, certification ensures your business demonstrates genuine environmental leadership.

For further insights, explore related topics: Why Certification Matters or Flexible Energy Contracts Explained.