Solar Inverter Replacement and Upgrade Service
Solar inverters last 10–15 years — significantly less than the 25–30 year life of your panels. When an inverter fails, your entire solar system stops generating. A like-for-like inverter replacement costs £500–£2,500 and takes a single engineer visit of 2–4 hours. An inverter replacement is also the optimal moment to upgrade to a hybrid inverter with battery storage capability.
Key Takeaways
- Solar inverters last 10–15 years; your panels will outlast them by 10–15 years.
- Replacement cost: £500–£1,200 for standard string inverters; £800–£1,800 for SolarEdge; £150–£350 per unit for Enphase microinverters.
- Key failure signs: no generation despite sunshine, error codes, red/amber LED on inverter, system shutdowns.
- You can replace with a different brand — an inverter replacement is the ideal time to upgrade to a hybrid (battery-ready) inverter.
- 0% VAT applies to inverter replacement in the UK — the same as a full solar installation.
- Using an MCS-certified installer like Greentech Renewables maintains your Smart Export Guarantee eligibility.
- Greentech Renewables serves Greater Manchester and the wider North West — contact us for a same-day quote in most cases.
What Are the Signs That My Solar Inverter Needs Replacing?
⚠️ Check your monitoring app first. Many inverter faults are displayed as error codes in your monitoring portal (SolarEdge mySolarEdge, Enphase Enlighten, GivEnergy portal). Check the app before calling an engineer — the fault code tells you whether the issue is the inverter, panels, or grid connection.
The seven most common signs your solar inverter needs replacing:
- No generation despite clear sunny days — your monitoring shows zero or near-zero output on days that should be productive
- Red or amber LED error light — on the inverter unit itself (not just the monitoring app)
- Error codes on the display screen — look up the specific code in your inverter manual or call us to diagnose
- Inverter switching off and restarting repeatedly — thermal shutdown due to internal component failure
- Significantly lower generation than last year — gradual degradation before total failure
- Visible physical damage — burn marks, cracks, moisture inside the casing
- Unusual noise from the unit — fan bearing failure is a common early warning sign
How Much Does Solar Inverter Replacement Cost in the UK?
| Inverter Type | Common Brands | Replacement Cost | Typical Lifespan |
|---|---|---|---|
| String inverter (standard) | Fronius, SMA, Growatt, Solis | £500–£1,200 | 12–15 years |
| String inverter (SolarEdge) | SolarEdge HD-Wave | £800–£1,800 | 12–15 years |
| Microinverter (per unit) | Enphase IQ7/IQ8 | £150–£350 | 20–25 years |
| Hybrid inverter (with battery) | GivEnergy, SolarEdge, SMA | £1,000–£2,500 | 12–15 years |
Should I Replace Like-for-Like or Upgrade My Inverter?
An inverter replacement is an opportunity to upgrade your system's capability. If your panels are still performing well, consider whether a hybrid inverter with battery storage could improve your system's economics. A hybrid inverter typically costs £200–£600 more than a standard replacement inverter but enables you to add a battery at any time in the future without another inverter change.
| Option | Cost Premium | Benefit | Best For |
|---|---|---|---|
| Like-for-like replacement | — | Fastest, lowest cost | Inverter under 10 years old, warranty fault |
| Upgrade to same brand/spec | Minimal | Latest firmware, better monitoring | Older system, monitoring upgrade |
| Upgrade to hybrid inverter | +£200–£600 | Battery-ready, one connection point | Planning to add battery storage |
| Full system upgrade | +£2,000–£5,000 | New panels + inverter + battery | Panels also near end of life |
For a personalised recommendation based on your system's age, generation data, and goals, contact Greentech Renewables for a free inverter assessment. We carry out solar panel maintenance and health checks across all of Greater Manchester.
Get a Quote for Solar Inverter Replacement
Fast quotes · Same-day callouts available · MCS certified · 0% VAT · Greater Manchester
Request Inverter Quote Solar MaintenanceFrequently Asked Questions — Solar Inverter Replacement
How much does a solar inverter replacement cost in the UK?
How long do solar inverters last?
What are the signs my solar inverter needs replacing?
Can I replace my solar inverter with a different brand?
Is 0% VAT applicable to solar inverter replacement?
Do I need an MCS-certified installer to replace my solar inverter?
Can I upgrade to battery storage at inverter replacement time?
How long does solar inverter replacement take?
Methodology note: Inverter lifespan data from SolarEdge technical documentation and Enphase manufacturer specifications. Replacement cost ranges sourced from Greentech Renewables quote data 2025–2026 and cross-referenced with published data from The Eco Experts. VAT ruling per HMRC Notice 708/6 (Energy Saving Materials).
MCS-certified solar engineers providing solar maintenance, inverter replacement, and system upgrades across Greater Manchester. Rated 4.9★ on Trustpilot. Contact us for an inverter assessment →
