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. Teesside is in our extended coverage area — two to three working days for urgent faults.
Book a visitFree remote diagnostic · no fix, no feeIndependent — not affiliated with any installer or manufacturer.
Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)
I left an enquiry few days ago and got a call back today from Ron. I have FoxESS battery and inverter that seemed not doing the right job and after only few questions, Ron told me exactly what I need to do to restart my system, without even seeing it. After almost 2 weeks of not being able to use my FoxESS equipment, today is finally up and running. Very professional and knowledgeable. Thanks Ron
Diligent and reliable service.
After 6 months of trying to find someone to help with non functioning Givenergy batteries and inverter, I contacted Ron at STS who remotely sorted the problem within days. Highly recommended.
Amazing support, went out of his way to help try and get us back up and running
Amazing! I was having trouble with a flat GivEnergy battery and solar panels not working. I contacted through WhatsApp and we managed to get it all sorted within a couple of days! Super fast service. I can’t thank you enough for your help when my installer didn’t want to know and GivEnergy has gone in to administration! I know where to go if anything happens again!
Teesside's solar install base follows a familiar pattern from the FiT and government-scheme era — thousands of systems fitted between 2011 and 2016 on post-war housing estates, now reaching the age where hardware starts to fail. What makes this area different is the coastal and estuarine environment. Systems along the coast from Hartlepool down through Redcar and Saltburn, and along the Tees estuary through Stockton and Thornaby, face salt-air corrosion that accelerates component degradation well beyond what inland systems experience.
Middlesbrough's residential solar is concentrated on the 1950s–1970s housing estates — Acklam, Linthorpe, Marton, Park End, Berwick Hills, Easterside. These properties have large, straightforward roof areas and many took advantage of FiT incentives or received systems through ECO and Green Deal programmes. Typical installations are 3–4kW arrays with Solis or Growatt string inverters and standard polycrystalline panels. The panels are holding up — the inverters are reaching end of life.
Systems along the Teesside coast — Redcar, Marske-by-the-Sea, Saltburn, Hartlepool — and the Tees estuary corridor face accelerated corrosion from salt-laden air. DC isolators, MC4 connectors, junction boxes, and earthing bonds all degrade faster in these environments. A system that would last 12–15 years between major component failures inland may need attention at 8–10 years in a coastal location. Annual maintenance is particularly important here.
Teesside was heavily targeted by ECO and Green Deal programmes during 2012–2016. Installers like Mark Group fitted thousands of systems across social housing and low-income households in Middlesbrough, Stockton, and Hartlepool. Many homeowners received little documentation, no monitoring setup, and minimal explanation of how their system works. The installer closures that followed left these customers with no support at all.
The more affluent areas of Teesside — Yarm, Eaglescliffe, Ingleby Barwick, Nunthorpe, Guisborough — have seen a wave of battery retrofit installations on existing solar systems. GivEnergy and Sunsynk dominate. These households are typically on time-of-use tariffs and want the battery to charge from cheap overnight electricity and discharge during peak hours. When it doesn't deliver the expected savings, the cause is almost always configuration rather than hardware.
Middlesbrough and Teesside have a significant number of solar installations from council-backed schemes and the FiT era. Many are reaching the age where components need replacing. We remote-diagnose before every repair visit — no wasted trips, no call-out fees. All costs in writing before work begins.
System fault diagnosis and repair — inverter failures, generation drops, isolator faults, monitoring issues, battery errors. From £295.
Fault diagnosis →Old inverter removed, replacement installed, configured, and performance verified. All residential brands handled. From £995.
Inverter replacement →An EPS circuit converts your existing battery into a genuine backup system. We wire a dedicated circuit and configure the battery to supply essentials during grid outages.
EPS installation →Annual service visit — generation benchmarking, inverter diagnostics, wiring check, isolator test, firmware review. Written report with recommendations. From £195.
Annual maintenance →Moved into a Teesside property with solar? We identify the full system, check whether it was part of a council scheme, set up monitoring, and provide a written report. From £295.
On-site walk-through →Remote monitoring analysis — fault logs, generation benchmarks, firmware status. Written diagnostic report, usually same-day. Free — £125 only if we fix it remotely.
Remote diagnostic →Teesside's solar install base combines the standard challenges of ageing FiT-era hardware with the additional complication of coastal and estuarine corrosion. These are the faults we see most across the region.
The most distinctive fault pattern on Teesside. Systems in Redcar, Saltburn, Marske, Hartlepool, and along the Tees estuary develop corroded DC isolators, degraded MC4 connectors, and failing junction boxes years earlier than identical inland systems. The corrosion is often invisible from ground level — it only shows up during a roof-level inspection or when the system suddenly trips. We carry replacement isolators and connectors and can usually resolve these in a single visit. Generation stopped guide →
Thousands of systems across Middlesbrough, Stockton, and Hartlepool were installed under ECO and Green Deal between 2011 and 2015, typically running Solis or Growatt string inverters. These are now past the 10-year mark and reaching end of life. Symptoms: blank display, no generation, intermittent fault codes, tripping the consumer unit. The panels are almost always fine. Replacement with a modern hybrid inverter restores full output and adds battery-ready capability. Inverter replacement →
Mark Group, Solarplicity, and several smaller regional installers all operated across Teesside — and all are gone. The result: thousands of homeowners with no monitoring access, no MCS certificates, missing warranty information, and no one to call when faults appear. The systems are usually still generating — they just have no one managing them. We handle full recovery: monitoring transfer (not GivEnergy), documentation rebuild, warranty verification, and ongoing maintenance. Installer gone bust guide →
Homeowners in Yarm, Eaglescliffe, Ingleby Barwick, and Nunthorpe adding GivEnergy or Sunsynk batteries to existing systems often find the battery isn't delivering the expected savings on their time-of-use tariff. The system charges overnight but doesn't discharge during the peak window, or charges from the grid when it should be charging from solar. The cause is almost always configuration: charge schedule timing, CT clamp direction, eco mode settings, or a firmware update that has reset values. We fix this remotely. Battery not discharging guide →
Teesside had a mix of national and regional solar installers operating during the FiT and government-scheme era. Several have since closed. If your installer has gone into liquidation or stopped trading, we handle the full recovery — monitoring transfer (not GivEnergy), documentation, warranty claims, fault diagnosis, and ongoing maintenance.
Administration 2015. Government scheme installs across Teesside. Fronius and Solis inverters now 10+ years old and failing.
Mark Group guide →Dissolved November 2023. Combined energy supplier and solar installer. Active across the North East — locked monitoring and missing documentation.
Solarplicity guide →Sheffield-based. Voluntary liquidation January 2026. Operated across Yorkshire and into the North East via ECO and government schemes.
All Seasons guide →Installer not listed? The recovery process is the same regardless of who installed your system. Full installer gone bust guide or book a call.
Teesside's install base skews toward Solis and Growatt on older government-scheme systems, with GivEnergy and Sunsynk growing on battery retrofits in the suburban areas. Each brand has different diagnostic methods, firmware management, and warranty processes — we know them all.
The full Teesside conurbation — Middlesbrough, Stockton, Redcar, Hartlepool, and surrounding towns. All at the same pricing as our core Yorkshire coverage.
Not listed? If you're on Teesside, we almost certainly cover you. Get in touch and we'll confirm availability. We also cover nearby Darlington and York.
Teesside has thousands of homes with solar panels from the FiT era and government schemes. When these properties change hands, the new owner almost never receives the MCS certificate, FiT registration details, monitoring login, or warranty information. Coastal properties need particular attention — corroded components may not be obvious from a standard survey. We visit, identify everything, check performance and component condition, set up monitoring in your name, and hand over a written report.
GivEnergy is the most common battery brand we service across Teesside — almost always as a retrofit on existing FiT-era solar. If your GivEnergy battery isn't saving you money, isn't charging from solar, or the monitoring has never been connected, the cause is usually configuration rather than hardware. We provide specialist GivEnergy diagnostics, tariff optimisation, on-site WiFi and monitoring setup, and post-administration warranty support across Middlesbrough, Stockton, Darlington, Redcar, and Hartlepool. GivEnergy Ltd entered administration in April 2026, so the manufacturer warranty is no longer being honoured. We help you work out which other routes may still apply, and we supply and install replacement GivEnergy hardware at fixed prices.
GivEnergy support on Teesside → · All GivEnergy guides → · Bought a house with GivEnergy? →
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. Teesside is the northern edge of our coverage — same pricing, slightly longer lead time.
Due to unprecedented demand we’re currently only carrying out on-site work in Yorkshire, and replies are taking up to 7 days. Remote diagnostics continue for the whole UK as normal.
Every message is read and answered, so please don’t send it twice; that only slows the queue.
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