Ground-mounted solar puts your panels on an engineered frame in the garden, paddock or field instead of on the roof — and done properly it usually out-generates an equivalent roof system, because we set the tilt and orientation exactly rather than taking whatever the roof gives us. Midland Solar has been installing solar since 2009 from our base in Tamworth, and we design, install and commission ground mount systems across the Midlands as an MCS-certified, NAPIT-registered installer and HIES member. This page covers what a ground-mounted system honestly costs, the planning rules as they stand after the August 2026 changes, and how the installation itself runs. If you want the background first — what ground-mounted solar is, the pros and cons, and the different frame types — start with our ground-mounted solar guide. This page is for people ready to install one.
Who Ground-Mounted Solar Suits
The honest starting point: if you have a sound, reasonably unshaded south-, east- or west-facing roof, a roof system is almost always the better buy. It needs no groundworks, no trenching and, in most cases, no planning application — so the same budget buys more panels. We talk customers out of ground mounts regularly for exactly this reason.
Ground-mounted is the right answer when:
- The roof can't do the job. North-facing only, heavily shaded by trees or neighbouring buildings, structurally marginal, or a covering — old clay tiles, fragile slate, thatch — that shouldn't be drilled.
- The building is protected. On listed properties a garden array is often more palatable to a conservation officer than panels on the building itself. It still needs consent — covered below — but it can be the route that actually gets approved.
- You have unshaded land. A lawn, garden or paddock with clear southern exposure. As a rule of thumb allow roughly 6–10 m² of ground per kW once row spacing and access are included.
- Larger self-builds and rural homes that want more capacity than the roof area allows, especially where a heat pump or EV charging pushes up demand.
- Smallholdings and equestrian yards with daytime loads — stables, workshops, cold stores, barns. For field-scale systems on working farmland, see our agricultural solar service.
Ground-Mounted Solar Costs
A ground-mounted system typically comes in 15–25% above an equivalent roof system. The premium isn't the panels — they're the same — it's everything underneath them: the mounting frame, the foundations, the groundworks, and the trench carrying the cable run back to the house. On the other side of the ledger there's no scaffolding, and a frame set at the ideal tilt and orientation will usually generate more per panel than a compromised roof.
Indicative supply-and-install ranges for a fixed ground mount solar system, based on straightforward ground and a modest cable run:
| System size | Panels (approx.) | Indicative installed cost |
|---|
| ~4 kW | 9–10 | £8,500 – £11,500 |
| ~8 kW | 18–20 | £14,000 – £19,000 |
| 12 kW and above | 27+ | from around £19,500 — priced on survey |
These are indicative figures to frame a budget, not quotes — every ground mount is priced from a site survey. Domestic solar installations are zero-rated for VAT until 31 March 2027, and these figures reflect that. Finance options are available, subject to status.
What actually moves the price within those ranges:
- Ground conditions and foundation type. Ground screws suit most gardens and are quick and clean; concrete ballast avoids digging where services or roots are in the way; driven posts suit longer rows in open ground. The soil — not the brochure — decides.
- Cable-run distance. Trenching is priced by the metre, and long runs need heavier armoured cable to keep voltage drop in check. An array 60 m from the house costs meaningfully more to connect than one 15 m away.
- Frame specification. Height, tilt and wind loading drive the steel and aluminium in the ground mount solar frame — an exposed paddock needs more engineering than a sheltered garden.
- Consents. A planning application where one is needed, and network operator (G99) fees on larger systems.
Planning Permission for Ground-Mounted Solar in England
The permitted development rules for standalone solar were rewritten on 27 August 2026, when the Town and Country Planning (General Permitted Development) (England) (Amendment) Order 2026 (S.I. 2026/896) amended Part 14 of the GPDO. A lot of advice online — including from national kit retailers — still quotes the old rules. As the law now stands, a standalone array in the garden of a house in England is permitted development under Schedule 2, Part 14, Class B, provided it stays within these limits:
- Array size: the solar panels must not exceed 9 m² of surface area. That is roughly four modern residential panels — under 2 kW.
- Height: a tiered limit depending on where the array sits (table below).
- Protected sites: no permitted development within the curtilage of a listed building or on a scheduled monument — those need a planning application from the outset.
- Conservation areas and designated land: Class B still applies, but a prior approval application to the council is required first where the array would sit in a conservation area nearer the highway than the house, or on designated land (conservation areas, National Landscapes, National Parks, the Broads) within 5 m of the boundary. On World Heritage Site land (Ironbridge Gorge and the Derwent Valley Mills are both in the Midlands) a standalone array is not permitted development at all if it would sit nearer the highway than the house or within 5 m of the boundary.
- Conditions: the array must, so far as practicable, be sited to minimise its effect on the amenity of the area, and be removed when no longer needed.
| Where the array sits | Maximum height |
|---|
| Within 5 m of a boundary and in front of the principal elevation | 1 m |
| Within 5 m of any boundary of the curtilage | 2 m |
| In a conservation area, nearer the highway than the house | 2 m |
| Any other position | 4 m |
The practical consequence of the 9 m² cap: almost every ground mount worth building needs a householder planning application. A 4 kW array carries around 20 m² of panel, more than double the permitted development limit. That is not a reason to abandon the idea — well-sited domestic arrays are routinely approved — but it is a programme item. Allow typically 8–12 weeks for the application, and we supply the array drawings and site plans yours will need.
Commercial and field-scale ground arrays are a different regime: non-domestic permitted development (Part 14 Class J) only covers small standalone arrays within the curtilage of a building, so field-scale systems generally need a full planning application to the local authority. And note this section is England-specific — Wales and Scotland run their own permitted development rules, and they differ.
How We Install a Ground Mount Solar System
A domestic ground mount is usually two to four days on site, with the consents running beforehand. The sequence:
- Site survey. Shading analysis, orientation, ground conditions, and the cable route back to your consumer unit — plus an honest check that a ground mount actually beats your roof. If it doesn't, we'll say so.
- Foundations. Ground screws, concrete ballast or driven posts, chosen from the soil survey rather than habit. Screws go in without excavation; ballast keeps everything above ground where digging is a problem.
- Frame and panels. The ground mount solar frame is assembled, levelled and torqued, typically at a 30–35° tilt facing south, then the panels are mounted, bonded and strung.
- Trenching and the cable run. Steel wire armoured (SWA) cable runs from the array to the house in a ducted trench with warning tape, then reinstated. This is the part roof systems never pay for — and why cable-run distance matters at quote stage.
- Inverter, battery and DNO. The inverter and any battery are sited at the house end, and we handle the grid paperwork. A G98 notification covers systems up to 16 A (3.68 kW) per phase; anything above that needs G99 approval from the network operator before the system is energised. Ground-mounted systems are usually specified larger than roof systems, so G99 is common here — we apply early, because the DNO's response can set the overall timetable.
- Commissioning and certification. Testing, commissioning, electrical certification and your MCS certificate — the document export tariffs ask for — plus a handover pack. Our workmanship is guaranteed for 2 years, alongside the manufacturers' product and performance warranties.
Batteries and Ground-Mounted Arrays
Pairing a battery with a ground mount is straightforward, but the battery does not live out at the array. It belongs at the house end of the cable run — a garage, utility room or outbuilding — sited to the manufacturer's guidance on temperature, ventilation and clearances. Some units, including the Tesla Powerwall, are rated for outdoor installation; we still prefer a sheltered spot where one exists. The longer DC or AC run to a ground array also feeds into the design: it influences whether we DC-couple the battery through a hybrid inverter or AC-couple it at the consumer unit, and how the cabling is sized. We install Fox ESS, Solax and Tesla Powerwall systems — see our battery storage service for how we specify them.