Solar Panel Installation for Care Homes: What Actually Happens, Step by Step

A factory or warehouse roof is an empty, secured environment. A care home roof sits directly above people who are frail, sometimes bedbound, frequently living with dementia, and for whom routine and calm are clinically important. That single fact reshapes every decision in the install.

Three constraints drive the whole programme:

• The building never closes. A care home runs 24/7/365 — you cannot decant residents for a fortnight the way an office can send staff home. Every method statement is written around an occupied, operational building.
• Fire-escape integrity is non-negotiable. Scaffold, plant and exclusion zones must never compromise a means of escape. We coordinate the scaffold design with your fire risk assessment before a single tube goes up.
• Disruption has clinical consequences. Sudden loud noise, unfamiliar high-vis figures at windows, or a blocked corridor can distress residents living with dementia. The programme is sequenced to minimise all three.

This is why we treat the install as a clinical-environment project, not a roofing job. The technical work — panels, inverters, cabling — is the easy 20%. The discipline of delivering it inside a working care home is the other 80%, and it is where inexperienced installers come unstuck.

Nothing touches your roof in Phase 1. Two surveyors attend: a structural/roofing surveyor and an electrical engineer. The roofing survey confirms tile or membrane type, rafter spacing, remaining roof life and any asbestos (common in pre-2000 stock — managed under CAR 2012, never disturbed without a licensed survey). The electrical engineer inspects your incoming supply, main distribution board, available way for the inverter, and your half-hourly meter data to size the array against genuine daytime demand.

For a typical 50-bed home this produces a 30-50 kWp design sized to hit 40-60% self-consumption from your 24/7 base load — kitchens, laundry, lifts, nurse-call, hot water and IT. We model panel layout (avoiding shading from chimneys, dormers and plant), inverter location, cable routing that avoids resident areas, and isolation points. If a battery is specified it is LFP chemistry only (BS EN 62619), externally sited in a fire-rated enclosure, and integrated with your PEEP backup plan. You receive a single-line diagram, structural calculation and a method statement to review before anything is ordered.

The commercial groundwork — funding route, AIA position, costs — is settled before Phase 1, in the buyer's guide stage and on the cost page.

This phase overlaps everything and is usually what governs your live date. Three workstreams run at once:

• G99 DNO connection. Any commercial array above 3.68 kW per phase needs Distribution Network Operator approval before it can export. We submit the G99 application to your DNO — UK Power Networks (London/SE/East), Northern Powergrid (Yorkshire/NE), Electricity North West, SP Energy Networks (Scotland), SSEN or National Grid Electricity Distribution (Midlands/SW). For 30-100 kWp the determination typically takes 4-12 weeks. This is the single longest lead time, so we lodge it the moment the design is signed.
• Planning. Most roof-mounted care home solar falls under Permitted Development, Class A Part 14 of the GPDO 2015 — no application needed. The exception is listed buildings (roughly 8% of the stock), which require Listed Building Consent, and any home in a conservation area, which warrants a check.
• Procurement and scheduling. Panels, inverters, mounting and scaffold are ordered against confirmed lead times, and we agree the on-site schedule with your registered manager — including which weeks suit your home and which to avoid (CQC inspection windows, flu-season lockdowns, major family events).

Because this phase is paperwork and lead times rather than site work, residents experience nothing during it.

The week before any roof work, the site is prepared. Scaffold is the most visible change, so it is planned with your registered manager: erected away from primary fire-escape routes, positioned to avoid blocking bedroom windows where possible, and fitted with debris netting and ground-level barriers. Scaffold alarms are sited and tested so they never trigger near sleeping areas at night.

Before lifting a single panel, every operative completes a dementia-friendly site induction delivered with your staff. It covers: keeping high-vis exposure at windows to a minimum, never entering resident areas unaccompanied, recognising and de-escalating signs of resident distress, the home's safeguarding and lone-working rules, and the agreed quiet hours. All operatives are DBS-checked. We agree a single staff liaison — usually a deputy manager or maintenance lead — as the one point of contact for the duration.

We also walk the family-communication plan with you: a short notice for the entrance and a letter or email families can be sent, explaining what they will see (scaffold, occasional noise) and reassuring them no resident is being moved. Managing expectations here is what keeps the phone calls down once the scaffold appears.

This is the only phase residents and families directly experience, and it is short. For a 30-50 kWp home it runs 3-8 working days. The defining feature is that the work is sequenced around the clinical timetable rather than the other way around:

• Mornings: personal care and medication rounds. Loud roof tasks (mounting-rail drilling, lifting) are held until after the morning round settles.
• Mealtimes: no high-noise work during breakfast, lunch or tea — these are anchor points in a dementia resident's day and are protected.
• Afternoons/early evening: quieter tasks — cable pulling, inverter mounting, DC string work — chosen for windows when residents rest or have visitors.
• Night: no works; scaffold alarms confirmed silent.

Internal cabling is routed through plant rooms, risers and corridors using protected, signed runs that never block a fire exit and are cleared away each evening so no walking-aid or wheelchair route is obstructed overnight. The inverter and isolators are mounted in plant space, away from resident-accessible areas. A brief, controlled electrical shutdown is needed for the final tie-in to your distribution board — this is scheduled with your team for a low-dependency window, kept to under an hour, and never affects nurse-call or life-critical circuits, which are isolated and protected throughout. See a worked example on our 52 kWp residential home case study and the 30 kWp dementia unit case study.

A care home array is not finished when the last panel is bolted down — it is finished when it is certified, witnessed and documented to a standard your CQC inspector and your insurer will accept. Commissioning is layered:

• NICEIC electrical inspection. The full installation is tested and certified to BS 7671 (18th Edition) with an Electrical Installation Certificate issued.
• G99 commissioning. The DNO connection is energised and, where required, witness-tested; the export limitation and protection settings are verified against the approved application.
• MCS certification. The system is registered under MCS — the certification that underpins Smart Export Guarantee payments and most grant eligibility.
• Battery commissioning (if fitted): LFP enclosure, fire detection, ventilation and PEEP-integrated backup function all tested.

You then receive a handover pack: O&M manual, certificates, monitoring login, the single-line diagram, and — specific to your sector — an evidence summary you can drop straight into your CQC Single Assessment Framework Well-led folder, where environmental sustainability is now assessed. A short staff briefing covers the isolator location, monitoring dashboard and what to do in a power cut. From there it is a 25-year asset with annual servicing.

For all the engineering detail above, the lived experience inside the home is deliberately uneventful — which is the point. Here is what residents and relatives genuinely notice:

• Week before: a scaffold appears outside. Families get a heads-up letter; the entrance carries a brief notice. No one moves.
• During the 3-8 fit days: some footsteps and intermittent noise from the roof, clustered into protected windows so mealtimes and rest periods stay quiet. High-vis figures are kept away from bedroom windows. Corridors stay clear; exits stay open.
• The tie-in hour: a short, planned electrical shutdown in a low-dependency window — nurse-call and life-critical circuits stay live throughout.
• After: scaffold comes down, and the only ongoing sign is a monitoring screen at reception showing today's generation — something many homes use as a talking point with residents and a visible sustainability cue for visiting families.

Done properly, the install leaves no clinical footprint: no agitation spike, no missed medication round, no blocked escape route, no resident relocated. That is the bar a care home install has to clear, and it is why the process is engineered around the people inside the building first, and the roof second. When you are ready, the buyer's guide covers the commercial decisions that come before any of this — and our team will run the desk feasibility from your meter data free of charge.