Solar panel FAQs for Scotland

Straight answers to common questions about solar exports, batteries, grants, DNO approval and Scottish housing considerations. Figures checked August 2026.

What is the Smart Export Guarantee (SEG)?

The SEG is a government-backed scheme that pays you for electricity you export to the grid from solar panels. Licensed suppliers must offer at least one export tariff. Flat-rate tariffs currently run roughly 1p to 25p/kWh, with time-of-use peaks higher — always confirm with your supplier.

How much can I earn from exporting solar in Scotland?

A typical 4kW system in central Scotland generates around 3,400 kWh per year (per MCS MIS 3002). Exporting about 65% at 12p/kWh earns roughly £250–£290 per year from exports alone, plus savings on your own bills. Use our calculator for a personalised figure, or request a free survey for exact results.

Do I need a smart meter for SEG payments?

Yes. You need a SMETS2 smart meter so your supplier can measure actual exports. Your supplier will install one for free. Without a smart meter, some suppliers use a "deemed export" estimate — typically less favourable.

Which SEG tariff pays the most?

As of August 2026, Octopus Outgoing pays 12p/kWh — the highest widely available fixed rate (from 1 March 2026). Time-of-use tariffs can pay above 30p at peak times but fluctuate. Rates change — always confirm directly with the supplier.

Is solar worth it in Scotland?

Yes. Edinburgh receives roughly 85% of London's irradiance, and Scottish yields run 780–870 kWh/kWp/year (PVGIS). Combined with export income, bill savings, and 0% VAT (until 31 March 2027), most systems pay back within 6–12 years. A free survey gives exact figures for your roof.

How does a battery improve the financial return?

A battery stores surplus solar for evening use, pushing self-consumption from around 35% to 60–80%. It also enables grid arbitrage — charging on cheap off-peak electricity (around 7p/kWh) and discharging during peak hours (around 28p/kWh). See our battery comparison page for the full breakdown.

What is MCS certification and why does it matter?

MCS (Microgeneration Certification Scheme) is a government-backed quality standard. You need an MCS-certified installation to qualify for SEG payments. Our installation partner, Home Heating Services (Scotland) Ltd (SC484353), holds MCS certification, RECC registration and TrustMark accreditation (3559930).

Do I need planning permission for solar in Scotland?

Solar panels on most houses fall under permitted development and do not need planning permission. However, listed buildings and properties in conservation areas do need consent. Tenement flats typically require co-owner consent under the Tenements (Scotland) Act 2004. A building warrant is not normally required, but your installer arranges a completion certificate through eBuildingStandards where needed.

Which DNO covers my area?

Central and southern Scotland is served by SP Energy Networks (SPEN). The Highlands, islands and north are served by Scottish and Southern Electricity Networks (SSEN). Systems up to 3.68kW need a G98 notification; larger systems need a G99 application. We handle all DNO paperwork as part of the installation.

Can I switch SEG supplier without changing energy supplier?

Yes. Your SEG tariff does not have to be with the same company that supplies your electricity. You can shop around for the best export rate independently.

Are there grants for solar in Scotland?

The standalone solar/battery HES grant closed on 6 June 2024. Solar qualifies for 0% VAT (until 31 March 2027), SEG export income, and optional interest-free loan routes only. For heat pumps installed alongside solar, Scotland's clean heating grant provides up to £7,500 (up to £9,000 rural/island), with optional interest-free loans of up to £7,500 per funding stream. Eligibility: applicant must be a natural person, owner-occupier, with the property on domestic council tax. not available where the property is owned by a business or listed as a business asset. (Home Energy Scotland, checked August 2026).

What about the Boiler Upgrade Scheme?

The Boiler Upgrade Scheme (BUS) is England and Wales only. It rose to £9,000 on 21 July 2026 for rural households moving off heating oil. Not available in Scotland. Scotland has its own funding through Home Energy Scotland — see the grant question above.