Solar savings in Scotland: frequently asked questions
Most questions about solar in Scotland come down to three things: how much you will use at home, what your tariffs are, and whether your roof suits panels. This page answers the questions we hear most often, plainly and without sales gloss, and links to fuller guides on each topic.
Last updated: 5 November 2026.
Reviewed by the Scottish Energy Efficiency team.
Does solar work in the Scottish winter?
Yes. Solar panels produce electricity year-round in Scotland, although winter output is much lower than summer output. Most annual generation arrives between spring and early autumn. A battery on a time-of-use tariff keeps saving in winter by cycling cheap overnight electricity into the day.
Snow can cover panels briefly, but it usually slides off pitched roofs quickly. Panels need daylight, not heat, so bright cold days can still be productive.
Because winter generation is low, it is sensible to judge solar on the yearly total rather than on a single dull month. Your quotation should show expected generation across the whole year.
How much does solar save in Scotland?
Savings come from three sources: units you generate and use yourself, overnight battery arbitrage, and export income under the Smart Export Guarantee. The biggest saving usually comes from self-use. The exact figure depends on your usage, roof, tariff and battery, so we model it on your property rather than quote a single number.
Our solar savings calculator guide shows how to work out your own figure step by step, and the payback guide explains how to set that saving against the installed price.
What are the costs and rules to know about?
Qualifying domestic solar and battery installations carry 0% VAT until 31 March 2027, then the rate is due to return to 5%. Most domestic installations on houses are permitted development, but listed buildings, conservation areas, flats and some flat roofs may need permission.
Interest-free credit up to £30,000 is available, subject to status and affordability. Terms and conditions apply. Solar Savings Scotland is not a lender, and credit is arranged through FCA-authorised finance partners.
How do you choose an installer you can trust?
Ask for the installer’s MCS certification number, confirm TrustMark registration, check the guarantee is insurance-backed, ask whether scaffolding is included, and find out who actually carries out the work. The company on the certificate should be the one on your roof.
We install through MCS-certified partners. Your written quotation confirms the equipment, the price and who carries out the installation.
Frequently asked questions
What is the Smart Export Guarantee?
The SEG pays you for surplus electricity you export to the grid. Rates are set per kWh by each supplier, so compare them alongside your import tariff before choosing. Our SEG guide explains how to compare them.
Is battery storage worth it without solar panels?
A battery alone can save money by charging on a cheap overnight tariff and using that electricity during the day. This is overnight arbitrage, the second-biggest saving after self-use.
How long do solar panels last in Scotland?
Panels typically last 25 to 30 years, with output guaranteed at around 80% after 25 years. Inverters usually need replacing once in that period, and batteries are generally warrantied for 10 years.
Can I fit solar panels on a tenement flat?
Sometimes. A tenement roof is usually owned in common, so other owners must agree, and planning rules for flats differ. Our house type guide covers this.
Do solar panels need much maintenance?
Very little. Scottish rain usually keeps panels clean. Check the monitoring app occasionally for drops in output, and expect to replace the inverter once during the panels’ life.
Will solar panels add value to my home?
A buyer may or may not value the system at what you paid. If you plan to move within a few years, do not assume the installation pays for itself before you leave.
More solar savings guides
How do you get a solar savings quote?
Fill in the form and we will model the arithmetic and send a written quotation from our MCS-certified partner.