90 kW Devon equestrian yard — arena and stable block

Modelled worked example. The figures below are modelled from typical 2026 UK costs, yields and tariffs for this building type and system size — this is an illustrative scenario, not a named client project.

Scenario: Riding school and livery yard (45 horses) Location: Mid Devon Vertical: Equestrian Buildings System size: 90 kW across arena roof and stable block Annual generation: 82,000 kWh Annual saving: £18,500 Simple payback: 7.1 years

A mid-Devon riding school and DIY livery yard with 45 stabled horses across an indoor arena (60m × 25m), a covered horse-walker, and three blocks of American-barn-style stables (22 boxes each). Annual electricity spend before install: £28,500 across arena lighting, surface-watering pumps, stable-yard lighting, water heating, and tack-room HVAC.

90 kW rooftop PV split between the arena roof (52 kW) and the largest stable block (38 kW). 167 modules in total, two string inverters tied into the existing yard supply. An install like this completes in around three weeks, scheduled into the quieter summer livery period.

The modelled system achieves 64% self-consumption — moderate, reflecting the lighter overnight baseload typical of equestrian operations versus dairy or poultry. The remainder exports under SEG, modelled at 10p/kWh.

Modelled annual savings of roughly £18,500 in year one across cost avoidance and export income. Simple payback at 7.1 years — longer than dairy or poultry but still strongly economic on a 25-year asset. Many yards also make the install visible — a live-generation board in the tack room plays well with an increasingly eco-conscious livery customer base.