Tell us what's happening — error codes, display messages, generation drop. We review your monitoring before the visit so the engineer arrives from Cardiff knowing exactly what to expect.
Book a repairDiagnose first — free if we can't fixRon was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Excellent response to diagnose a problem on our SolarEdge installation. Kept us informed at every step. Diagnosis quickly completed and solution implemented.
I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.
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.
After recently changing my fuse board the ct clamp broke, this meant my inverter was not communicating properly with my GivEnergy system. After several people letting me down, finally got put in touch with Ron. He came out within 24hours & resolved the fault within an hour, no fuse just got on with it. Work was tidy & arrived when he said he would. Ron followed up a few days later to confirm all was still good, great service from all involved.
Fantastic service, I would highly recommend. From first contact my solar issue was resolved within 2 days. Wouldn't use anyone else.
Weather sets Swansea apart. Salt-laden, driven-rain air off Swansea Bay and the exposed Gower coast ages roof-side connections faster than almost anywhere else we cover — and it lands on a fleet that spans ageing FiT-era string inverters on Uplands terraces and GivEnergy battery retrofits across the suburbs.
Uplands, Brynmill, Sketty and St Thomas filled up with compact 2–4kW arrays during the 2011–2016 FiT and Welsh-scheme years. Ten-plus years on, the original string inverters on those roofs — Solis, Growatt, SMA, Aurora — have started giving up for good, and at that age a replacement inverter usually makes more sense than another repair.
GivEnergy is the battery platform we're called to most across Swansea, from Sketty and Killay down to the Mumbles — and most of those problems turn out to be configuration rather than hardware: a battery importing from the grid while its stored charge sits unused, schedules out of step with Octopus or Tomato tariff slots, a portal knocked offline by a router change. Those are fixed remotely from £95, no trip down the M4 needed, while true hardware faults get an on-site visit. GivEnergy help →
SolarEdge systems are common on larger Swansea properties — particularly in Sketty, Killay, Langland and Caswell out towards the Mumbles. Optimiser communication drops are the most frequent fault: individual panels showing no output in the monitoring portal while the rest of the string carries on. Usually caused by a failed optimiser or a loose DC connection at the panel — diagnosed on-site once the remote review confirms it.
The Gower peninsula is an exposed coastal AONB — Mumbles, Bishopston, Pennard and the south Gower villages sit in salt-laden, driven-rain air that corrodes rooftop DC isolators, MC4 connectors and earthing far faster than inland systems. Morriston, Gorseinon and Gowerton see the same on weather-side roofs. We trace corrosion, connector and shading faults and put the array back to full output.
Use the fault finder to describe what you're seeing, or book a free remote diagnostic.
Monitoring review, fault identification, written report. No fix, no fee.
Component swap, wiring fix, isolator replacement, connector refit. Written quote before work starts.
New unit supplied, installed, and commissioned. Swansea inverter replacement →
All prices include labour. The visit fee already accounts for covering Swansea from our Cardiff base — no separate travel surcharge. Cost confirmed in writing before any work begins. Full pricing breakdown →
Because Swansea sits 40 minutes from the base, the process front-loads the remote work — the fault is identified before the trip, so a single visit fixes it.
Start by telling us what the system is doing: error codes, display messages, generation numbers, and how long it's been like this. Add a photo of the inverter display if you can. Form below, or call.
Everything that can be done from Cardiff is done first — monitoring pulled, generation history and battery telemetry reviewed, fault pinned down, usually the same day. Configuration faults (CT clamp, charge schedule, export limit) are corrected remotely, which spares you the wait for a visit entirely. For hardware faults, the van is loaded with the right parts before it heads west.
Costs are confirmed in writing before the trip is booked — labour, parts, commissioning, all itemised. The remote diagnostic is free whatever happens, and nothing is scheduled until you've approved the quote.
Our Cardiff-based engineer travels out to Swansea with the right parts — typically next-day to two working days for a booked visit. Repair completed, system tested live, monitoring verified, written report provided. If anything needs follow-up, we schedule it before leaving.
Our engineer is based in Cardiff and covers Swansea on a planned basis — around 40 minutes west on the M4. The free remote diagnostic runs same-day; on-site visits are typically next-day to two working days. We reach the whole city, the Gower peninsula, and nearby Llanelli and Neath, with no separate travel surcharge.
We also cover the wider region across South Wales — Full Swansea area guide · Cardiff · Newport
Old inverter out, new one in. Solis, Fronius, Growatt, SolarEdge, GivEnergy — all replaced and commissioned on-site. From £995.
Inverter replacement →The most common battery platform we see across the area. Charge schedules, tariff slots, portal-offline and discharge faults — most fixed remotely.
GivEnergy help →Full physical inspection, electrical checks, settings audit, and written report — useful on exposed Gower roofs. From £195. One-off visit, no subscription.
Annual maintenance →Same-day fault identification from your monitoring data, no trip needed. No fix, no fee — and if it's a configuration issue we often fix it remotely from £95.
Free remote diagnostic →Describe the problem — error codes, no generation, battery misbehaving, monitoring offline — and include the brand if you know it. Expect a diagnosis and a clear price back within a few hours; the on-site visit, if needed, follows next-day to two working days.
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