Solar in Orkney Islands in figures
| Solar PV installations, end of 2025 | 558 |
| Installed capacity, end of 2025 | 2.3 MW |
| Capacity, end of 2024 | 2.1 MW |
| Capacity, end of 2020 | 1.4 MW |
| Generation in 2025 | 2.1 GWh |
| Installations per 1,000 households | 50.9 (UK median 67.0) |
| Average size per installation | 4.2 kW |
| Rank by capacity | 357th of 361 UK council areas; 31st of 32 in Scotland |
What the figures show
Capacity in Orkney Islands has grown by 62% since the end of 2020, close to the UK as a whole (69%). In 2025 alone it rose from 2.1 MW to 2.3 MW.
There are 50.9 installations for every 1,000 households, below the Scotland median of 78.4 and below the UK median of 67.0. That is 252nd of 361 council areas, and 24th of 32 in Scotland.
At 4.2 kW on average, most installations here are home-sized, so business roofs make up a small share of what is installed so far.
What a business roof in Orkney Islands could generate
Modelled with PVGIS for the centre of Orkney Islands, a south-facing roof at 30 degrees produces about 843 kWh per kWp a year. That is 343rd of 361 council areas; the UK median is 998 kWh.
| Item | Illustrative figure |
|---|---|
| System | 100 kWp, south facing at 30 degrees |
| Installed cost | £900 per kWp, so £90,000 excluding VAT |
| Generation | 843 kWh per kWp, about 84,300 kWh a year |
| Used on site | 70%, so 59,010 kWh at 24p = £14,162 saved |
| Exported | 30%, so 25,290 kWh at 5p = £1,265 earned |
| Total a year | About £15,427 |
| Simple payback | About 5.8 years before tax relief |
Same sums as our commercial solar calculator: illustrative, not a quote. East- or west-facing roofs, shading and how much power you use in daylight all move these figures, and a company paying corporation tax can usually shorten the payback with capital allowances. See the cost guide for price ranges by system size.
Planning and grid connection
Scotland has its own planning system: National Planning Framework 4 is the national policy, and non-domestic rooftop solar is covered by the Scottish permitted development order, with conditions. A building warrant may also be needed where the roof structure is altered. Ground-mounted arrays usually need an application to Orkney Islands council, or to a national park authority inside a national park. Our planning permission guide sets out the conditions.
Most commercial systems need G99 approval from the local network operator before they are switched on. The operator follows the postcode rather than the council boundary: our Scotland page covers the operators in the region, and the Energy Networks Association postcode tool confirms yours. See G99 and DNO applications.
For funding, see grants and reliefs in Scotland.
Nearby council areas
- Moray, about 102 miles away
- Highland, about 114 miles away
- Aberdeenshire, about 118 miles away
- Shetland Islands, about 120 miles away
- Aberdeen City, about 125 miles away
- Na h-Eileanan Siar, about 145 miles away
Or see every council area and the Scotland page.
Where these figures come from
Installations, capacity, generation and households: Department for Energy Security and Net Zero, Regional Renewable Statistics, renewable electricity by local authority 2014 to 2025 (workbook). They cover all solar PV, homes and businesses, including ground-mounted schemes. Yield: PVGIS 5.3 (European Commission Joint Research Centre), SARAH3 data and 14% system losses, for the council area's centre point (ONS boundaries, December 2024), modelled 4 November 2026. Distances are between centre points.
Frequently asked questions
How much solar is installed in Orkney Islands?
At the end of 2025, Orkney Islands had 558 solar PV installations with a combined capacity of 2.3 MW, which generated about 2.1 GWh in 2025, according to government figures. That covers homes, businesses and ground-mounted schemes.
How much would solar on a business roof in Orkney Islands generate?
About 843 kWh per kWp a year for a south-facing roof at 30 degrees, modelled with PVGIS for the centre of Orkney Islands. A 100 kWp system would make roughly 84,300 kWh a year. Orientation, pitch and shading change this, and a site survey models your own roof.
Can a business in Orkney Islands get a free solar survey?
Yes. Answer six short questions and we match the site with one MCS certified installer, who surveys it on site or by video call. The survey is free and there is no obligation to go ahead. Get a free survey.
Related pages
- ScotlandSP Energy Networks and SSEN connections, NPF4 and Scottish permitted development, the four city low emission zones, the Scottish rates exemption and realistic yields.
- Council areasSolar installations, capacity, growth and modelled yield for all 361 UK council areas, with a page for each and a CSV download.
- Commercial solar calculatorEstimate commercial solar savings and payback, with the generation, price and cost assumptions shown and sourced, and the limits of a simple estimate explained.
- ScotlandCurrent solar support in Scotland for businesses, community groups, public bodies, schools and farms, with rates, planning and official contacts.
Commercial solar costIllustrative prices per kWp by system size, extra costs, running costs, VAT and tax.