What Affects the Cost of Solar Panels & Batteries in Scotland
The cost of a solar PV and battery system in Scotland is not a single fixed number — it depends on your home and the system that suits it. Rather than quote a generic figure, this guide explains the factors that influence what you pay, so you understand your quote when you receive it. For an accurate, tailored price, we arrange a no-obligation survey at your home.
0% VAT on solar panels and batteries until 31 March 2027. The supply and installation of qualifying solar PV and battery storage currently attracts 0% VAT. Loans available, subject to status. We install through MCS-certified partners.
The main cost factors
Six things account for most of the variation in price between one installation and the next. Understanding them helps you see exactly what you are paying for.
1.System size (kWp and number of panels)
The single biggest factor is the size of the solar array, measured in kilowatt-peak (kWp). A larger system with more panels generates more electricity but requires more panels, mounting equipment and labour to install. The right size for your home depends on your roof area, your daytime electricity use and how much of your consumption you want to cover. During a no-obligation survey, the installer assesses your roof and usage to recommend an appropriate system size — and the quote reflects that specific system, not a generic package.
2.Roof type, orientation and condition
Your roof has a significant bearing on cost. A straightforward south-facing roof at a typical pitch is the simplest scenario. Things that can affect the price include the roof pitch (angle), orientation (south, east/west, or a combination), the roofing material (concrete tiles, slate, flat roof membrane), and whether the roof structure needs any attention before panels can be fitted. Slate roofs, for example, can take more care to work on than concrete tile. A complex roof with multiple valleys, dormers or Velux windows may require more time and mounting equipment, which is reflected in the quote.
3.Battery storage capacity
Adding battery storage lets you store surplus solar electricity generated during the day for use in the evening and overnight. Battery capacity is measured in kilowatt-hours (kWh). A larger battery stores more energy but costs more. The right capacity depends on how much surplus your system is likely to generate and your evening usage. You can choose solar panels only, solar with a battery, or — if you already have panels — battery storage only. The survey helps identify a sensible battery size for your household.
4.Inverter type and capacity
The inverter converts the direct current (DC) electricity your panels produce into alternating current (AC) your home uses. There are different inverter approaches: a single string inverter, or microinverters fitted to individual panels. The choice affects both cost and how the system performs in partially shaded conditions. If your roof has shading from chimneys, trees or neighbouring buildings, microinverters or an optimised string inverter may be recommended. The inverter is sized to match your array, and the quote includes the appropriate inverter for your system.
5.Scaffolding and access
Safe installation requires safe access to your roof. For most two-storey homes this means scaffolding, which is a normal part of an installation and is included in your quote. The amount of scaffolding depends on the height of your property, how many roof elevations need to be worked on, and how easily the scaffolding can be erected at the foot of the building. Narrow side access, conservatories directly below the roof, or steep ground can all influence the scaffolding requirement. The survey covers access so there are no surprises in the quote.
6.Installation labour and complexity
The labour element covers fitting the mounting system, installing the panels, fitting the inverter, running the cabling, and connecting the system to your consumer unit. A straightforward installation on an accessible roof is quicker than one involving a complex roof, multiple arrays, or a consumer unit upgrade. If your electrical distribution board needs updating to accommodate the solar connection, that work is included in the quote. The installer identifies any such requirements during the survey so your quote is accurate and complete.
Why an accurate quote needs a survey
Because the cost depends on the specifics of your home, an accurate quote requires a survey. An installer visits your property, measures the roof, checks the orientation and pitch, assesses any shading, looks at your electrical setup, and discusses your usage and expectations. Only then can they recommend a system and give you a written, no-obligation quote that reflects your home — not a guess based on a postcode.
A survey also means you can ask questions in person, see exactly where panels would go, and understand the reasoning behind the recommended system size and battery capacity. There is no obligation to proceed, and the quote is yours to keep whether or not you go ahead.
Solar panels, battery, or both?
You can request a quote for solar panels only, solar panels with battery storage, or battery storage added to an existing solar system. Each option has a different cost profile. Adding a battery increases the upfront cost compared to panels alone, but allows you to use more of the electricity your panels generate. The right choice depends on when you use electricity and whether you want to store surplus generation for the evening and overnight. The survey helps you weigh this up.
Get an accurate, no-obligation quote
The best way to find out what a solar and battery system will cost for your home is to arrange a survey. There is no obligation.
Frequently asked questions
Why can you not just give me a price online?
Because every home is different. The size of system you need, your roof, your battery requirements and the access to your property all affect the cost. An accurate quote requires a no-obligation survey at your home, which we arrange for you.
Does a bigger system always cost more?
Generally yes — more panels and a larger battery mean more equipment and labour. But a larger system may also be more efficient to install per panel, so the cost per kWp can differ. A survey gives you an accurate breakdown.
Is battery storage included in the quote?
If you want battery storage, yes. You can request solar panels only, solar with a battery, or battery storage only. The survey will cover whichever option you are interested in.
Does scaffolding add a lot to the cost?
Scaffolding is a standard part of a safe installation and is usually included in your quote. The amount of scaffolding depends on your roof height, access and how many elevations need to be worked on.