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Solar Repair & Support in Newport

Newport is the closest city to our Cardiff base — about 12 miles east on the M4, roughly 20 minutes away. After Cardiff itself it's our strongest coverage in South Wales. From the Victorian terraces of Maindee and Pillgwenlly to the post-war semis of Malpas and Bettws and the newer Rogerstone estates, we repair, replace, and diagnose solar and battery systems across the whole city — next-day on-site, free same-day remote diagnostic.
from £245 · free remote diagnostic first · no call-out fee
Book an on-site visitWhat we fix ↓
  • On-site repair from £245
  • Inverter replacement £795
  • Free remote diagnostic — written report within 24 hrs
Newport solar engineer

Tell us what's happening with your system. We'll confirm whether it needs a remote diagnostic or an on-site visit, and give you a clear price before any work starts. Newport is the closest city to our Cardiff base — next-day on-site for urgent faults, free remote diagnostic same-day.

Book a visitFree remote diagnostic · no fix, no fee

Independent — not affiliated with any installer or manufacturer.

5.0
Rated 5.0 on Google Read all 48 reviews

A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.

Philip Davey · Jun 2026 Google

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing. If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026

Ron was extremely helpful and tried his best to repair/reset our GivEnergy inverter remotely. In the event he was unsuccessful but he couldn’t have been more helpful. If you have problems with a GivEnergy system please contact him. Highly recommended

Neil Crichton · Jun 2026 Google

Massively massively recommended. We had a big battery array (49kW across three phases) put in four years ago. c £35k cost. It’s been a total nightmare for many reasons, not least 1. our installer being totally useless and unresponsive and 2. Givenergy, our battery supplier, going bust. Long story short it had never worked anywhere near properly despite countless hours on phones and emails; the best we’d achieved was one third of the batteries working. Rather than write it off, I asked a PM friend to try to source someone who could come on site and review and revive the system. He found Solar Tech Support and Ron. Ron assured us he was the man to get it going again. After so many years of pain, I was not convinced but, true to his word, five hours later it was up and running. Lovely chap, super knowledgeable with a support team to lean on who are also clearly super technical. I honestly didn’t think there was much chance of getting this array going ever again so was absolutely delighted when Ron and team pulled it off. Bravo!

Will Wynne · Jun 2026 Google

Our SolarEdge PV system with LG batteries had its first hiccup after 8 years of hard work. The Inverter failed. Fortunately I found Solar-Tech-Support who diagnosed the problem very quickly, ordered a replacement unit and fitted it shortly after we received the unit from SolarEdge. Very thorough and professional approach. Thank you, a solid 5 star recommendation.

Les Bennett · Jun 2026 Google

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.

Ian · May 2026
Local Knowledge

Solar in Newport — a Welsh-scheme city by the Usk

Newport's housing is a layered mix: dense Victorian terraces in Maindee, Pillgwenlly, Stow Hill and Baneswell; interwar and post-war semis spreading out through Malpas, Bettws and Ringland; and newer estates around Rogerstone and the Celtic Manor side of the city. Layered over all of it are years of Welsh-funded solar — Nest (Warm Homes), Green Homes Wales, and social-housing solar through providers such as Newport City Homes, on estates from Lliswerry to Ringland. The result is a large base of FiT-era and scheme-fitted systems, many now 8–14 years old, plus a fast-growing wave of GivEnergy battery retrofits. As the M4 Severn crossing's nearest city, Newport is also our quickest call from Cardiff.

Victorian terraces with compact FiT-era arrays

Maindee, Pillgwenlly, Stow Hill and Baneswell are streets of solid-brick Victorian terraces, mostly built 1860–1910. Their narrow south-facing roofs carry compact 2–3kW arrays of 8–12 standard panels, fitted during the FiT and Welsh-scheme years on Solis, Fronius or Growatt string inverters. Tight spacing, chimney shading and shared scaffolding access are the everyday constraints here — and those inverters are now well past ten years old.

Welsh-scheme territory

Newport saw heavy uptake of Welsh Government energy schemes — Nest (Warm Homes), Green Homes Wales, and social-housing solar through providers like Newport City Homes. Many of these systems went onto semis in Malpas, Bettws and Ringland and onto social-housing terraces with little handover paperwork, no monitoring login, and no explanation of how the system works. When a scheme contractor moves on, those owners are the ones most often left unsure what they have or who to call.

Severn estuary exposure

Newport sits on the River Usk where it meets the Severn estuary, and the lower city, Pillgwenlly docks, and the M4 crossing corridor catch driven coastal rain and salt-laden wind off the water. That exposure accelerates corrosion in DC isolators, junction boxes and roof-level MC4 connectors. The panels themselves cope fine — it's the electrical and switching components in exposed estuary-side locations that degrade faster and need checking more regularly.

GivEnergy battery retrofits

A steady stream of Newport homeowners with older FiT-era arrays are now adding battery storage — most commonly GivEnergy. Bolting a battery onto a system that was never designed for one brings integration work: CT clamp placement, hybrid inverter compatibility, eco mode, charge scheduling and tariff alignment all have to be configured correctly. We see plenty across the city where the battery is physically fitted but never properly set up, so it just isn't saving what it should.

Services

What we do in Newport

Newport is the closest city to our Cardiff base — about 12 miles east on the M4. Its mix of Victorian terraces, post-war semis, and newer Rogerstone estates throws up a wide range of system types and faults. We remote-diagnose before every visit. No call-out fees. All pricing confirmed in writing.

Solar system not working

Fault-finding and on-site repair — inverter failures, DC isolator trips (common on estuary-exposed systems), generation drops, battery faults. From £245.

Fault diagnosis →
Inverter replacement

Complete replacement of an ageing or dead FiT-era inverter — old unit removed, new one installed, configured, and tested. We stock common models for faster turnaround. £795.

Inverter replacement →
EPS & battery backup

Emergency power supply installation — keep essentials running during outages using your existing battery. A sensible add-on for exposed estuary-side and rural-fringe properties. From quoted price.

EPS installation →
Annual maintenance

Preventative annual service — generation analysis, inverter diagnostics, DC isolator and wiring check, firmware updates. Written report posted within 48 hours. From £195.

Annual maintenance →
New homeowner walk-through

Moved into a Newport property with panels? We visit, identify the full system, set up monitoring, check tariff and warranty status, and hand you a written report. From £295.

On-site walk-through →
Remote diagnostic

Remote fault-finding — we access your monitoring portal, analyse generation and fault data, and check firmware. Same-day for Newport, written report usually within 24 hours. Free — £75 only if we fix it remotely.

Remote diagnostic →
Common Problems

What goes wrong with solar systems in Newport

Newport's install base is dominated by FiT-era and Welsh-scheme systems from roughly 2011–2016. The hardware is ageing, original installers and scheme contractors have often moved on, and the Severn estuary adds weather-related wear. These are the faults we see most across the city.

1
Ageing FiT-era string inverters reaching end of life

Most solar across Maindee, Pillgwenlly, Malpas and Bettws went up under FiT and Welsh schemes between 2011 and 2016, typically on Fronius IG, Solis or Growatt string inverters — all now past the ten-year mark. Symptoms: blank display, no generation, intermittent fault codes, or tripping the consumer unit. The panels are almost always fine. Replacing a tired string inverter with a modern hybrid restores full output and adds battery-ready capability. Inverter replacement →

2
DC isolator failures — worse near the estuary

DC isolators are the weakest point in any solar installation, and they fail faster in exposed, salt-laden coastal air. Systems near Pillgwenlly docks, the lower city and along the M4 Severn crossing corridor see accelerated isolator and connector degradation from driven rain and estuary wind. A failed DC isolator can trip the whole system or, at worst, present a fire risk. We replace these during maintenance visits as a matter of course and carry stock of the common types. Fault diagnosis →

3
Orphaned systems with no documentation or support

Plenty of Newport systems were fitted under Welsh schemes or by installers that have since closed. Homeowners are left with kit they don't fully understand, locked monitoring accounts, missing MCS certificates and no warranty route. The systems are usually still generating — they just have no one managing them. We handle full recovery: monitoring transfer, documentation rebuild, warranty verification, and ongoing maintenance. Installer gone bust guide →

4
GivEnergy battery retrofit not configured properly

Homeowners adding a GivEnergy battery to an existing FiT-era system across Newport often find it isn't saving them money. The system charges during the day but still imports from the grid through peak evening hours instead of discharging the battery. The cause is almost always configuration: CT clamp direction or placement, eco mode settings, charge schedule timing, or a firmware update that has reset values. We diagnose and fix this remotely in most cases. GivEnergy support →

Installer gone bust?

Your Newport installer has closed — we take over from here

A lot of South Wales solar was fitted during the FiT and Welsh-scheme boom, and over the years a number of those installers have stopped trading. If yours has gone into liquidation or simply disappeared, it doesn't change what you own or what we can do. The recovery process is the same regardless of who installed your system — monitoring transfer, documentation rebuild, warranty diagnosis, and fault repair. Your manufacturer warranties on the panels and inverter are unaffected by the installer closing.

Monitoring & documentation
Start here

We transfer your monitoring portal into your name, rebuild missing MCS and handover paperwork, and confirm exactly what's installed on your roof.

Recovery guide →
Solar Plants (Port Talbot)

South-Wales installer, Port Talbot — entered administration in 2020 and dissolved in 2022. If they fitted your system, your manufacturer warranties and any insurance-backed guarantee still stand.

Solar Plants guide →
Warranty & fault recovery

We verify which warranties survive, diagnose the actual fault, and get the system back to full output — then keep it maintained going forward.

Installer gone bust guide →

Installer not listed? It makes no difference to the recovery — the process is the same regardless of who installed your system. Full installer gone bust guide or book a call.

Brands

GivEnergy, Fronius, Solis — we fix them all in Newport

GivEnergy is now the brand we're called to most in Newport — battery retrofits onto older FiT-era arrays, configuration and CT clamp problems, and warranty work. Alongside it, the city's install base skews toward Fronius and Solis on older scheme systems, with Sunsynk and Fox ESS growing on newer storage. Each brand has its own diagnostic methods, firmware management and warranty process — we know them all.

GivEnergy — battery diagnostics, CT clamp & eco mode setup, charge scheduling, firmware, warranty claims
Fronius — inverter replacement, error code diagnosis, end-of-life swap
Solis — string inverter faults, monitoring setup, firmware updates
Growatt, Sunsynk, SolarEdge, Fox ESS, Huawei — all supported
19+ brands — independent, no manufacturer bias
GivEnergy Repairs & Support

Full guide to every GivEnergy fault we fix — battery, CT clamp, eco mode, charge schedule, firmware and warranty.

GivEnergy brand hub →
All brands we support

GivEnergy, Fronius, Solis, SolarEdge, Growatt, Sunsynk, Huawei, and more.

Browse all brands →
Local Coverage

Areas of Newport we cover

Newport is the closest city to our Cardiff base — about 12 miles east on the M4 — so it's our strongest coverage after Cardiff itself. We cover the whole city and out along the Severn crossing corridor, all at the same pricing as Cardiff.

Maindee
Pillgwenlly
Stow Hill
Allt-yr-yn
St Julians
Caerleon
Malpas
Bettws
Ringland
Rogerstone
Marshfield
Caldicot

Not listed? If you're in Newport or just outside — Cwmbran, Risca, or along the M4 Severn crossing corridor — we almost certainly cover you. Get in touch and we'll confirm. Newport is our nearest city to Cardiff, where we're based.

New homeowner

Just bought a house in Newport with solar panels?

Newport has thousands of homes with solar fitted during the FiT era and under Welsh schemes such as Nest and Green Homes Wales. When these properties change hands — a Maindee terrace, a Malpas semi, a newer Rogerstone build — the new owner typically inherits no documentation, no monitoring access, and no explanation of the FiT or SEG payments, inverter brand, or warranty status. We visit, identify every component, check performance, set up monitoring in your name, and hand over a written report covering everything. As your nearest city to our Cardiff base, we can usually get to you quickly.

New homeowner guide On-site walk-through — £295
System identification — panels, inverter, battery, wiring
Monitoring transfer into your name
MCS certificate and warranty status check
FiT / SEG registration verification and transfer guidance
Written condition report and recommendations
FAQ

Solar repair in Newport — common questions

Quickly — Newport is the closest city to our Cardiff base, about 12 miles east on the M4 and roughly 20 minutes away. It's our strongest coverage after Cardiff itself. For urgent faults like a dead inverter or total generation loss we can usually be on-site next day. A free remote diagnostic runs same-day and identifies most faults before we even set off, so you often have answers the same afternoon you call.
Yes. We cover the whole of Newport — Maindee, Pillgwenlly, Stow Hill, Allt-yr-yn, St Julians, Maindee, Caerleon, Malpas, Bettws, Ringland, Rogerstone, Marshfield, and out toward Cwmbran, Risca, and Caldicot along the M4 Severn crossing corridor. Newport sits inside our core South Wales coverage from Cardiff, so it's all at the same pricing as Cardiff itself, with next-day on-site for urgent work.
Inverter replacement starts £795, which includes the new unit's installation, removal of the old one, configuration, and commissioning. The exact price depends on the brand, model, and system size. Many Newport systems still run original FiT-era string inverters fitted between 2011 and 2016 under schemes like Nest — a free remote diagnostic confirms exactly what's needed before we quote. Inverter replacement service →
Almost always, and usually remotely. When a GivEnergy battery retrofit doesn't save what it should, the cause is nearly always configuration rather than faulty hardware — CT clamp direction or placement, eco mode settings, or a charge schedule that isn't aligned to your tariff so the battery sits idle during peak evening hours. We diagnose GivEnergy systems remotely in most cases and reconfigure the CT clamp, eco mode, and charge windows so the battery actually offsets your evening import. We link straight to the GivEnergy brand hub for the full list of faults we fix.

Solar panels not working in Newport? Tell us what's happening.

Describe the fault — what you're seeing (or not seeing), the brand if you know it, when it started. We'll come back with a clear plan and price, usually same day. Newport is the closest city to our Cardiff base, so on-site visits are quick to arrange — next-day for urgent faults.

  • On-site repair from £245 · inverter replacement £795
  • Solar panel maintenance from £195
  • Free remote diagnostic — written report within 24 hours

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