Solar Export Tariff Without a Battery: The Complete UK Guide

These figures are illustrations rather than forecasts.

Roof direction, shading, system size, location, household demand and seasonal weather all affect generation and export. A proper solar survey should model expected generation, household self-consumption and grid export using the property’s actual roof and electricity-usage profile.

Be cautious when a quotation presents export income without showing how many units are expected to be exported or which tariff rate has been assumed.

Is it better to export solar or use it yourself?

Using solar electricity in your home is usually worth more than exporting it.

Energy Saving Trust reports that exported electricity commonly earns around 12p per unit, while buying electricity from the grid can cost more than twice that amount. Avoiding one imported unit may therefore deliver more value than selling that unit.

Where practical, shift genuine electricity demand into sunny periods:

1. Run washing machines and dishwashers during daylight.
2. Charge an EV when solar generation is available.
3. Use timers for flexible appliances.
4. Consider a compatible hot-water diverter.
5. Run dehumidifiers or similar equipment when panels are generating.

Do not create unnecessary demand simply to avoid exporting. The aim is to maximise useful self-consumption while still receiving payment for unavoidable surplus.

How to choose the right tariff

1. Confirm your eligibility

Check that your installation, meter and documentation satisfy the supplier’s requirements. MCS certification is commonly requested as evidence that the installation meets recognised standards.

2. Compare export rates

Look at fixed, variable and dynamic tariffs. Prioritise products that suit a solar-only system without controllable battery storage.

3. Check import costs

Compare the electricity unit rate, standing charge, fixed term and exit fees. Do not evaluate the export tariff in isolation.

4. Read the eligibility conditions

Confirm whether you must:

• Buy electricity from the same supplier.
• Use a particular installer.
• Have specific equipment.
• Provide half-hourly meter data.
• Remain on the tariff for a fixed period.

5. Check payment arrangements

Ask how frequently you will be paid, whether readings are collected automatically and whether export earnings appear as account credit or a separate payment.

6. Review tariff compatibility

EV and time-of-use tariffs may restrict which export products can be paired with them. Check both sides of the arrangement before switching.

7. Compare tariffs regularly

Export tariffs are competitive energy products. Rates and conditions may change, so review your arrangement at least annually.

Solar costs, savings and payback without a battery

Energy Saving Trust estimates that a typical domestic 4.5kWp solar installation costs approximately £7,600. Battery storage commonly adds around £5,000 to £8,000, so choosing solar without a battery can reduce the initial investment substantially.

Its July 2026 modelling indicates solar payback periods of approximately nine to twelve years across several UK locations when export payments are included. The result depends on location and how often occupants are at home.

Your payback may be shorter or longer. Important variables include:

• Roof orientation and shading.
• Scaffolding and installation complexity.
• Required roof repairs.
• Annual panel output.
• Electricity import prices.
• Export tariff changes.
• Daytime electricity consumption.
• Equipment replacement costs.

A quotation should separate estimated bill savings from estimated export income and clearly state every assumption. A property survey is required for an accurate installation price and financial forecast.

Why the installer matters

Export income cannot compensate for poor system design.

Panel layout, shading assessment, inverter sizing, cable routes, roof condition, monitoring and commissioning all affect output and reliability.

A competent installer should:

• Size the system around your roof and electricity demand.
• Provide realistic annual-generation estimates.
• Explain seasonal variations.
• Supply the required certification and documentation.
• Manage the relevant grid-connection process.
• Explain how to monitor generation and export.
• Consider future battery compatibility.
• Explain equipment and workmanship warranties.

The cheapest quotation may deliver weaker lifetime value if it ignores shading, uses unsuitable equipment or leaves the homeowner to resolve export-registration problems.

Ask to see installation photographs, customer case studies and realistic savings examples from comparable properties. Trust should be demonstrated through evidence rather than unsupported performance claims.

Can you add a battery later?

Many solar systems can be upgraded with battery storage, but retrofitting is easier when it has been considered during the original design.

Ask your installer:

• Whether the proposed inverter is battery-ready.
• Whether an AC-coupled battery would be needed.
• Where the battery could be installed safely.
• Whether the consumer unit requires upgrading.
• Whether warranties are affected by future changes.
• Which batteries are compatible with the monitoring system.

A battery can store midday surplus for use during the evening. It may also enable time-of-use tariff strategies.

However, battery storage adds significant cost and does not automatically improve payback. Energy Saving Trust notes that batteries can reduce grid reliance and work effectively with time-of-use tariffs, but their financial value depends on household consumption and tariff design.