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O&M contractAnnual inspectionReal-time monitoring

Commercial solar O&M contracts inspection, monitoring, and priority response

Structured annual maintenance for commercial solar PV and battery systems. Scheduled on-site inspections, real-time fault monitoring, written performance reporting, and priority access to our engineering team when something goes wrong. Independent provider — no manufacturer or installer bias.
from £10/kWp/annum all-inclusive annual contract
Book a proposal callWhat's included
  • Annual on-site inspection with written report
  • Real-time fault monitoring and automated alerts
  • Priority emergency response for contract holders
  • No lock-in · no installer bias · all brands
Annual O&M contract — from £10/kWp/annum

Priced from £10/kWp/annum — scaled to your system size. Larger systems, multi-inverter, or battery storage — quoted. Multi-site contracts — volume pricing available.

Book a proposal call
Annual on-site inspection of all components
Real-time fault monitoring with automated alerts
Written performance and condition report
Priority emergency response

No lock-in: Annual contracts with no automatic renewal and no exit penalty. Multi-year terms available at reduced rates.

5.0
Rated 5.0 on Google Read all 151 reviews

Great experience with STS great communication from Ron, very helpful and knowledgable. Installed me a second Givenergy battery to help take the strain off my original 9.5 that needs refurb due to a weak cell. They secured me an 8.2 arranged install. Levi arrived the whole install was done within 1.5 hours - great tidy job. Worked with me to alter my setup to allow easy removal of my 9.5 when i can get it away for refurb - very happy with their service and its reassuring to know there is a company out there that can help look after my givenergy system

Alan Glaister · Sep 2026 Google

What an absolute star. Ron went well beyond what i would have hoped for. His attention to detail was incredible, even making good the work of others.

Miles Gladson · Sep 2026 Google

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Google

Solar Tech Support answered my initial enquiry swiftly. They provided remote support to establish what the issue was, and through their experience and network, managed to get my clients system back online. Once the system was online, STS managed to diagnose the main issue to get the ac coupled inverter and battery back online, a battery repair was required. A site visit was organise and within a few days, the system was tested and back up and running. This has saved my client, and probably myself huge costs and inconvenience now the system is back online and working correctly. Would highly recommend.

Dean Wilkinson · Jul 2026 Google

Ron made more sense in 20 mins than our installer has done over the last 12 months There is a jungle out there and you need someone like Ron to give a comprehensive overview and solution

David · May 2026 Trustpilot

When my GivEnergy battery started playing up it became basically useless and several companies I called said they couldn’t help. Solar Tech Support really knew their stuff, communicated very well and resolved the problem quickly. Without them I’d have had to buy a replacement battery.

A D · Jun 2026 Google

Written by · Independent Solar Engineer Last updated

What's included in your operations and maintenance contract

Annual on-site inspection

A full physical inspection of every component — panels, cabling, trunking, DC and AC isolators, inverters, battery units, earthing, and mounting systems. The engineer checks for UV degradation, water ingress, heat damage, cable clip failure, corrosion, fan wear, and any signs of physical deterioration that monitoring cannot detect.

Real-time fault monitoring

Where the installed equipment supports remote connectivity — most modern commercial inverters do — we configure automated fault alerts that notify the STS engineering team when the system reports an error, drops offline, or underperforms. Faults are often identified and diagnosed before anyone on site notices a problem.

Performance reporting

A written report after each annual inspection covering: system condition, generation performance against expected output, any faults or underperformance identified, photographs, and a prioritised list of recommended actions (immediate, short-term, advisory). Structured for use in building management, insurance, and compliance reporting.

Priority fault response

O&M contract holders receive priority access to the STS engineering team for fault diagnosis and emergency repair. Same-day remote triage for reported faults, with next-business-day on-site attendance where remote resolution is not possible. Response times confirmed in your contract SLA.

Settings & configuration audit

At each inspection: export limits verified against DNO agreement, charge and discharge schedules reviewed, firmware versions checked with update recommendations, monitoring portal configuration confirmed, and CT clamp orientation validated. Incorrect settings are the single most common cause of commercial solar underperformance.

Compliance documentation

Each inspection report serves as evidence of ongoing professional maintenance. Suitable for landlord requirements, insurance renewal, building management reporting, and audit purposes. We can provide additional documentation confirming system safety status on request.

Available add-ons

These services are not included in the standard contract but can be added at any time. All are priced separately and confirmed before work begins.

Thermal imaging survey

Infrared inspection of panel array to identify hotspots, micro-cracks, bypass diode faults, and cell-level degradation. Particularly valuable for large rooftop arrays where individual panel inspection is time-consuming.

Panel cleaning

Professional cleaning of panel surfaces. Light cleaning of accessible panels is included in the annual inspection where safe. Heavy soiling, lichen, bird droppings, or large arrays requiring specialist access are quoted separately.

Connectivity setup

If the system is not currently online-connected and the equipment is capable of remote monitoring, we can configure the connection. This enables the real-time fault monitoring included in your contract.

Ad-hoc site visits

Additional on-site visits beyond the scheduled annual inspection. Used for post-storm checks, component replacement oversight, or follow-up on specific issues identified in the annual report.

Bird proofing

Mesh guard installation to prevent nesting under rooftop panels. Assessed during the annual inspection and quoted if recommended. See bird mesh installation for more detail.

What happens during the annual inspection

1
Pre-visit preparation

Before arriving on site, we review the monitoring data from the previous 12 months — generation trends, fault history, and any alerts triggered since the last inspection. This means the engineer arrives informed and can focus the on-site time on areas that need attention.

2
Physical component inspection

Every accessible component is physically inspected: panels for cracks, delamination, hotspots, soiling, and bird damage; cabling and trunking for UV degradation and mechanical wear; DC and AC isolators for operation and heat damage; inverters for fan operation, error indicators, ventilation, and physical condition; battery units for swelling, heat discolouration, cable integrity, and cell balance.

3
Electrical safety verification

Earth bond continuity checked. Cable entry points and glands inspected for water ingress. Connection tightness verified at accessible terminals. Any signs of arcing, heat damage, or deterioration flagged immediately. This is the part of the inspection that protects against electrical fire risk — and the part that remote monitoring cannot replicate.

4
Settings and configuration audit

Export limits verified against the DNO connection agreement. Charge and discharge schedules reviewed against the building's tariff. Firmware versions noted with update recommendations where applicable. Monitoring portal and alert configuration confirmed. CT clamp orientation validated — incorrect CT clamp direction is the most common misconfiguration on commercial systems and directly causes export revenue loss.

5
Written report with prioritised actions

Within five business days you receive a structured written report covering: current condition of every inspected component, generation performance analysis against expected output, any faults or underperformance identified, photographs, and a prioritised recommendation list — immediate actions (safety or revenue-critical), short-term actions (schedule within 3 months), and advisory notes (monitor and reassess).

Commercial solar O&M contract vs one-off audit

Both involve an on-site inspection. The difference is ongoing monitoring, priority response, and the relationship that follows. Both are available UK-wide.

O&M contract — from £10/kWp/annum

✓Annual on-site inspection
✓Real-time fault monitoring year-round
✓Priority emergency response
✓Written performance reporting
✓Compliance documentation
✓Ongoing engineering relationship

Best for: ongoing asset management, multi-year maintenance planning, compliance requirements.

Independent audit — one-off

✓On-site inspection and performance assessment
✓Written report with photographs
✓Independent — suitable for due diligence
✗No ongoing monitoring
✗No priority fault response
✗No ongoing relationship

Best for: pre-acquisition due diligence, second opinions, one-time assessment. See independent audit →

FAQ

Frequently asked

Thermal imaging surveys, panel cleaning beyond the light clean carried out during the annual visit, connectivity setup for systems not yet online, ad-hoc site visits, and bird proofing are priced as add-ons. The standard contract covers the annual on-site inspection, real-time fault monitoring, written performance reporting, compliance documentation, and priority access to the STS engineering team for emergency repair and fault response. Every add-on is priced separately and confirmed in writing before any work begins, so the annual contract fee stays predictable. Thermal imaging is particularly worth adding for large rooftop arrays where panel-by-panel inspection is time-consuming.
Contracts are priced per kilowatt-peak of installed capacity, starting from £10/kWp/annum, so the fee scales directly with system size. The written proposal then accounts for the number of inverters, site accessibility, battery storage complexity, and whether several sites are being brought under one arrangement. Multi-year terms are available at a reduced rate and multi-site contracts qualify for volume pricing. Every figure is confirmed in writing, with scope and SLA terms, before the contract begins.
An STS engineer visits the site and physically inspects all system components: panels for condition and soiling, cabling and trunking for degradation, isolators and switchgear, inverters for fan operation and error indicators, battery units for physical condition and cell balance, and earthing and bonding. The engineer also audits all system settings — export limits, charge schedules, firmware versions, and monitoring configuration. A written report with photographs and prioritised recommendations follows within five business days.
Where the installed equipment supports remote connectivity — most modern commercial inverters do — we configure automated fault alerts that notify the STS engineering team when the system reports an error, drops offline, or underperforms against expected output. This allows us to identify and often diagnose faults before anyone on site notices a problem. If the equipment is not currently online, we can assess whether connectivity can be established and quote for the setup separately.
Standard contracts are annual with no automatic renewal — you choose to continue each year. Multi-year contracts are available at a reduced rate for clients who prefer longer-term arrangements. There is no exit penalty on annual contracts. We retain clients because the service is good, not because of contractual lock-in.
Yes. Each annual inspection report is structured to serve as evidence of ongoing professional maintenance. We can provide documentation confirming that the system has been inspected, that it is operating safely, and that any identified issues have been flagged with recommendations. This documentation is suitable for landlord compliance, insurance renewal, and building management reporting.
The written proposal usually arrives within one business day of your enquiry, setting out scope, pricing, and SLA terms. Once agreed, the first annual inspection is scheduled and its written report with photographs and prioritised recommendations follows within five business days of the visit. Where the equipment supports remote connectivity, automated fault alerts are configured so the STS engineering team is notified when the system reports an error, drops offline, or underperforms.
Get started

Book your O&M proposal

Tell us about your system. We will provide a written proposal with clear scope, pricing, and SLA terms — usually within one business day. No obligation to proceed.

  • Annual contracts from £10/kWp/annum
  • No lock-in, no automatic renewal
  • Independent — no manufacturer or installer bias

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