Renewable Energy for Business: A Complete UK Guide
Renewable Energy for Business: A Complete UK Guide
Renewable energy business procurement is one of the most impactful decarbonisation levers available to UK organisations. Whether you are planning a business energy switch renewable contract, evaluating solar panels business UK installations, or negotiating a power purchase agreement, the options have expanded significantly as the UK grid has decarbonised.
This guide compares green energy tariff business contracts, on-site generation, PPAs, and wind energy business applications — with practical guidance on REGO certificates, scope 2 reporting, costs, and greenwashing risks.
Last updated: 24 June 2026 | Reviewed by Sustainability Editor
Key takeaways
- Renewable energy for business addresses scope 2 emissions from purchased electricity — often 15–40% of a typical UK company’s footprint.
- A credible green energy tariff business contract must include retired REGO certificates matching your consumption.
- On-site solar panels business UK projects can reduce bills and provide long-term price certainty.
- Power purchase agreements (PPAs) suit larger consumers wanting direct generator relationships without up-front capital.
- Combine renewable procurement with energy efficiency — green power does not replace the need to reduce consumption.
- Align claims with the CMA Green Claims Code and DESNZ reporting guidance.
Why renewable energy matters for UK businesses
Climate impact
Electricity generation has been the fastest-decarbonising sector of the UK economy. The grid mix increasingly includes wind, solar, and nuclear — but your supplier contract determines whether your organisation can claim renewable electricity.
For most UK businesses, purchased electricity is a material scope 2 emission source. Switching to verified renewable supply is often the highest-impact action available in year one of a net zero strategy.
Commercial drivers
| Driver | Benefit |
|---|---|
| Cost stability | PPAs and on-site solar hedge against volatile wholesale prices |
| Bill reduction | Solar self-consumption reduces grid purchases |
| Customer requirements | Supply chain questionnaires ask about renewable electricity |
| SECR / reporting | Market-based scope 2 reporting with REGO evidence |
| Employee attraction | Credible sustainability programmes support recruitment |
The Carbon Trust advises businesses to combine renewable procurement with demand reduction for maximum impact.
UK renewable energy options compared
| Option | Upfront cost | Complexity | Scope 2 impact | Best for |
|---|---|---|---|---|
| Green tariff with REGOs | None | Low | Full (if REGOs retired) | All businesses |
| On-site solar PV | Medium–high | Medium | Partial to full | Building owners, warehouses |
| Corporate PPA | Low (off-balance sheet) | High | Full | Large consumers (>1 GWh/year) |
| On-site wind | High | High | Partial to full | Rural sites with space |
| Community energy | Low | Low | Varies | SMEs wanting local projects |
Option 1: Green energy tariffs and REGO certificates
How green tariffs work
A green energy tariff business contract supplies electricity through the grid while the supplier procures renewable generation and retires REGO certificates (Renewable Energy Guarantees of Origin) to match your consumption.
REGOs are issued by Ofgem to renewable generators for each megawatt-hour (MWh) produced. When your supplier retires REGOs on your behalf, you can report zero or reduced market-based scope 2 emissions.
What to verify
- REGO retirement — certificates retired annually matching your kWh consumption
- Fuel mix disclosure — supplier’s overall generation portfolio
- Contract documentation — explicit renewable backing, not just “green branding”
- Additionality — some buyers prefer tariffs that fund new renewable capacity (harder to verify on standard tariffs)
Business energy switch renewable: action steps
- Request current contract end date and annual kWh consumption
- Compare business green tariffs from multiple suppliers
- Ask each supplier: “Will you retire REGOs matching 100% of my consumption?”
- Obtain REGO retirement confirmation annually for scope 2 reporting
- Report using GHG Protocol market-based method
Limitations
- Green tariffs do not reduce scope 1 (gas, fleet) or scope 3
- “Greenwashing” risk if REGOs are not properly retired — verify documentation
- Standard tariffs may bundle REGOs from existing generation without funding new capacity
Option 2: On-site solar panels
Solar panels business UK: feasibility factors
| Factor | Consideration |
|---|---|
| Roof ownership | Freehold or long lease with landlord consent |
| Orientation and pitch | South-facing ideal; east/west viable |
| Structural integrity | Load assessment for roof-mounted systems |
| Consumption profile | Daytime operations maximise self-consumption |
| Grid connection | G99 application for systems >3.68 kW |
| Planning | Most commercial roof mounts permitted development |
Financial model
- System size: 50–500 kWp typical for commercial buildings
- Capital cost: approximately £800–£1,200 per kWp installed (indicative; obtain quotes)
- Payback: 5–12 years depending on self-consumption rate and electricity price
- Savings: Reduced grid purchases; Smart Export Guarantee (SEG) for exported surplus
Scope 2 reporting
Self-consumed solar reduces purchased electricity (scope 2). Exported electricity may generate REGOs for the offtaker. Document generation meter data for your carbon footprint calculator.
UK government support
Check DESNZ and local authority grants for commercial energy efficiency and renewable installation. Schemes change frequently — verify current availability.
Option 3: Power purchase agreements (PPAs)
What is a power purchase agreement?
A power purchase agreement is a long-term contract (typically 10–25 years) to buy electricity directly from a renewable generator at an agreed price — without owning the generation asset.
PPA structures
| Type | Description |
|---|---|
| On-site PPA | Developer installs solar on your roof; you buy the output |
| Off-site PPA (sleeved) | Electricity from a remote wind/solar farm delivered via grid with contractual matching |
| Virtual PPA (VPPA) | Financial contract — difference between agreed and market price settled financially |
Who PPAs suit
- Large consumers (>1 GWh annual electricity)
- Organisations with multi-site portfolios
- Businesses wanting price certainty without capital expenditure
- Companies seeking additionality narratives (new-build renewable projects)
Considerations
- Legal and negotiation complexity — engage energy brokers or solicitors
- Contract length — long commitment required
- Grid matching for off-site arrangements
- REGO allocation must be specified in contract
Option 4: Wind energy for business
On-site wind
Wind energy business applications in the UK are typically limited to:
- Rural manufacturing sites with adequate land
- Agricultural businesses
- Large distribution centres in exposed locations
Small wind turbines (50–500 kW) require planning permission, noise assessment, and grid connection approval. Feasibility depends heavily on local wind resource.
Off-site wind via PPA
Most businesses access wind energy through off-site PPAs linked to UK wind farms rather than on-site turbines. This is the dominant route for corporate wind procurement.
UK context
The UK is one of the world’s largest offshore wind markets. Corporate PPAs with UK wind projects support the national net zero 2050 target while providing businesses with large-scale renewable supply.
REGO certificates: what UK businesses need to know
How REGOs work
- Renewable generator produces 1 MWh of electricity
- Ofgem issues 1 REGO to the generator
- REGO is traded or sold to a supplier or end consumer
- REGO is retired when claimed against consumption
- Retirement prevents double counting
REGOs and scope 2 reporting
The GHG Protocol Scope 2 Guidance requires dual reporting:
- Location-based: grid average emission factor (DESNZ)
- Market-based: supplier-specific or residual mix factor — zero if REGOs retired for 100% of consumption
Retain REGO retirement certificates for audit and SECR reporting.
REGOs vs carbon offsets
REGOs prove renewable electricity origin. They are not carbon offsets — they address scope 2 market-based reporting, not compensation for scope 1 or 3 emissions. Do not conflate renewable tariffs with carbon offsetting.
Combining renewable energy with efficiency
Renewable procurement without efficiency wastes money. The Carbon Trust recommends:
- Reduce demand — LED, BMS, insulation, equipment upgrades
- Switch supply — green tariff, PPA, or on-site generation
- Monitor — track kWh and tCO₂e annually
See 15 proven reduction strategies for the full efficiency playbook.
Contracting and switching: practical steps
Switching business energy supplier
- Note your contract end date — exit fees may apply before renewal window
- Gather 12 months of bills — total kWh, unit rates, standing charges
- Request quotes from business energy brokers or directly from suppliers
- Specify REGO requirement — 100% renewable backing with certificate retirement
- Compare total contract cost — not just unit rate (standing charges vary)
- Sign and schedule switch — typically 2–4 weeks for transfer
- Obtain REGO retirement confirmation at year end for scope 2 reporting
Solar installation process
- Desktop feasibility assessment (roof area, orientation, shading)
- Structural survey
- Obtain quotes from MCS-certified installers
- Submit G99 grid connection application (if >3.68 kW)
- Install and commission
- Register for Smart Export Guarantee with an energy supplier
- Monitor generation via inverter portal; integrate data into carbon reporting
PPA negotiation
- Appoint energy advisor or broker with PPA experience
- Define requirements: volume, duration, technology preference, additionality
- Issue request for proposal to developers
- Evaluate bids on price, project location, REGO allocation, and credit rating
- Legal review of contract (sleeved or virtual structure)
- Board approval and execution
Energy storage and flexibility
Battery storage paired with on-site solar can increase self-consumption and provide grid services revenue. For renewable energy business strategies, storage adds:
- Peak shaving — reducing grid demand during expensive periods
- Resilience — backup power for critical operations
- Higher solar utilisation — storing midday generation for evening use
Commercial battery economics are improving but remain site-specific. Model payback including potential grid flexibility revenues under UK market arrangements.
Costs, payback, and decision framework
Decision matrix
| Annual electricity use | Recommended starting point |
|---|---|
| Under 100,000 kWh | Green REGO-backed tariff |
| 100,000–1,000,000 kWh | Green tariff + efficiency; assess solar |
| Over 1,000,000 kWh | PPA evaluation; on-site solar if suitable |
Cost comparison (indicative)
| Option | Typical annual cost impact | Notes |
|---|---|---|
| Green tariff | 0–5% premium over standard | Often cost-neutral in competitive markets |
| On-site solar (owned) | Capital outlay; then reduced bills | SEG income for exports |
| On-site PPA | Per-kWh rate below grid (varies) | No capital required |
| Off-site PPA | Negotiated strike price | Legal costs upfront |
Obtain current quotes — energy markets change frequently.
Greenwashing risks and compliant claims
Avoid these pitfalls:
- “100% renewable” without REGO evidence — verify retirement certificates
- Claiming net zero from green tariff alone — scope 1 and 3 remain
- Bundling REGOs from existing hydro without transparency — legal but may not meet stakeholder additionality expectations
- Marketing “green energy” while gas heating dominates — address scope 1 separately
Comply with the CMA Green Claims Code. Be specific: “100% of our purchased electricity is backed by retired REGO certificates” is stronger than “we use green energy.”
Landlord vs tenant: who procures renewable energy?
Many UK businesses lease their premises. Renewable energy responsibility depends on who holds the electricity contract:
| Arrangement | Who contracts | Tenant action |
|---|---|---|
| Tenant-held electricity contract | Tenant | Switch to green tariff directly |
| Landlord-held (included in service charge) | Landlord | Negotiate green supply via green lease clause |
| Sub-metered | Tenant pays landlord | Request REGO-backed supply from landlord |
| Owner-occupied | Owner | Full control — tariff, solar, or PPA |
Green lease clauses — increasingly standard in UK commercial property — require landlords to procure renewable electricity or allow tenant installations. If you lease, check your lease terms before investing in on-site solar.
Half-hourly metering and large consumers
Businesses with annual electricity consumption above 100,000 kWh typically have half-hourly (HH) meters. HH data enables:
- Time-of-use tariff optimisation
- Accurate solar self-consumption modelling
- Demand-side response participation
- Granular scope 2 reporting
If you are a HH consumer, leverage your meter data when evaluating PPAs and on-site generation — your consumption profile determines the business case.
Renewable energy and scope 2 dual reporting
The GHG Protocol requires both:
- Location-based method — DESNZ grid average factor applied to all consumption
- Market-based method — supplier-specific factor; zero if REGOs retired for 100% of supply
Report both in your annual inventory. Location-based shows your physical grid dependency; market-based reflects contractual choices. Stakeholders may ask for either or both.
As the UK grid decarbonises, location-based scope 2 falls annually even without contractual changes — but market-based reporting with REGOs demonstrates deliberate procurement action.
Emerging options: corporate renewable portfolios
Larger UK organisations increasingly combine multiple procurement routes:
- Green tariff for baseline supply across all sites
- On-site solar at owned distribution centres
- Off-site PPA for additional renewable capacity with additionality claims
- REGO retirement documented centrally for group-level scope 2 reporting
A portfolio approach optimises cost, risk, and reporting credibility. Centralise energy procurement at group level where possible — individual site contracts may miss volume discounts, REGO aggregation benefits, and negotiated PPA terms.
Climate Change Levy and renewable energy
The Climate Change Levy (CCL) is a tax on UK business energy use. Renewable electricity from qualifying sources may be exempt from CCL when supplied under a certified green tariff. Confirm CCL treatment with your energy supplier when switching — it affects the total cost comparison between standard and green contracts.
Combined with reduced scope 2 emissions, CCL savings can further improve the business case for a business energy switch renewable contract. Ask your supplier to confirm CCL exemption status in writing before you sign.
Worked example: UK warehouse operator
Profile: 25,000 sq ft distribution centre, 420,000 kWh/year electricity, gas heating.
Year 1:
- Switch to REGO-backed green tariff → market-based scope 2 reduced to near zero
- LED lighting upgrade → 15% kWh reduction (63,000 kWh saved)
- Location-based scope 2 still reported using DESNZ grid factor
Year 3:
- Install 150 kWp rooftop solar → self-consumption covers ~30% of remaining demand
- Remaining grid supply on green tariff
Scope 2 outcome: Market-based emissions fall significantly; total organisational footprint also requires gas (scope 1) and logistics (scope 3) action.
Frequently asked questions
What is the easiest way for a UK business to switch to renewable energy?
Switching to a business green tariff with REGO retirement matching 100% of consumption is the fastest step. Verify annual REGO certificates from your supplier.
What are REGO certificates?
Renewable Energy Guarantees of Origin — Ofgem-issued certificates proving 1 MWh of electricity came from renewable sources. Retired REGOs support market-based scope 2 reporting.
Are solar panels worth it for UK businesses?
Often yes for building owners with suitable roofs and daytime consumption. Payback typically runs 5–12 years. Obtain structural survey and multiple installer quotes.
What is a corporate power purchase agreement?
A long-term contract to buy renewable electricity from a generator at a fixed or indexed price. Suitable for larger consumers; on-site PPAs avoid capital outlay for solar.
Does a green tariff make my business carbon neutral?
No. It addresses scope 2 electricity only. Carbon neutrality requires addressing all material scopes. See carbon neutral vs net zero.
Can I claim renewable energy in SECR reporting?
Yes, using the GHG Protocol market-based method with REGO evidence. Continue reporting location-based figures alongside.
Is wind energy viable on-site for my business?
Only on sites with strong wind resource and adequate land. Most businesses access wind through off-site PPAs rather than on-site turbines.
How does renewable energy affect my net zero strategy?
Renewable electricity reduces scope 2 emissions — often one of the first milestones in a net zero strategy. However, net zero requires addressing all material scopes. Pair renewable procurement with scope 1 fuel switching and scope 3 supply chain engagement for a complete decarbonisation pathway. See the net zero guide for the full decarbonisation hierarchy.
Conclusion
Renewable energy for business is a core pillar of UK decarbonisation — but the right option depends on your consumption profile, property ownership, and budget. Start with a verified green energy tariff, reduce demand through efficiency, and evaluate solar or PPAs as you scale.
Next steps:
- Review your current electricity contract and annual kWh
- Request REGO-backed quotes from business energy suppliers
- Assess roof suitability for solar panels business UK installations
- Integrate renewable procurement into your net zero strategy
- Explore how to reduce your carbon footprint across all scopes
Sources
- DESNZ — Department for Energy Security and Net Zero
- Ofgem — REGOs
- GHG Protocol — Scope 2 Guidance
- Carbon Trust — Renewable Energy
- UK Government GHG Conversion Factors
- CMA — Green Claims Code
This article is for general guidance only. Energy prices, grants, and regulations change — verify current terms before contracting.