Inverter replacement pricing
Solar Inverter Replacement Cost UK 2026
A solar inverter lasts 10–15 years. When it fails — usually a capacitor or cooling fan — replacing it is a 4–6 hour job. Costs range from £450 for a simple string inverter swap to £1,800 for a hybrid inverter with battery integration. We cover all brands.
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What you pay
Price ranges
| Specification | Price range |
|---|---|
| String inverter replacement (1.5–4 kW, domestic) | £450 – £750 fitted |
| String inverter replacement (5–6 kW, domestic) | £650 – £900 fitted |
| SolarEdge HD-Wave replacement (3.68–6 kW) | £750 – £1,100 fitted |
| Enphase microinverter (per unit) | £150 – £250 per panel unit |
| Hybrid inverter replacement (+ battery integration) | £1,400 – £1,800 fitted |
| Emergency call-out surcharge | +£95 – +£150 |
Where the money goes
Cost breakdown
| Component | % of cost |
|---|---|
| Inverter hardware | 55% |
| Labour (4–6 hours, 1 engineer) | 25% |
| MCS replacement certificate + DNO notification | 8% |
| Emergency travel + diagnostics | 7% |
| Margin + overheads | 5% |
What changes the price
Variables
- Brand availability Common brands (Solis, GoodWe) in stock — same week. Fronius, SolarEdge: 3–10 day lead time for non-emergency
- Optimiser vs non-optimiser SolarEdge optimiser systems need SolarEdge-certified engineer; standard string inverter swap is simpler
- Upgrade opportunity Inverter failure is an ideal time to upgrade to a hybrid inverter (ready for battery storage) — only £400–£600 extra vs like-for-like
- System age If system is 12+ years old, consider full system audit rather than inverter-only swap — panels may also be approaching end of life
Common questions
FAQs
How do I know my inverter has failed?
Symptoms: system shows zero generation on a sunny day, inverter display shows fault code (usually Err01–Err12 for common failures), or the unit is making clicking/buzzing sounds. Our emergency line (0800 099 6606) diagnoses remotely before booking an engineer.
Do you replace inverters for any brand?
Yes — SolarEdge, Fronius, GoodWe, Solis, Enphase, SMA, GivEnergy, Huawei SUN2000, Growatt. We hold stock of the most common UK residential brands.
Should I upgrade to a hybrid inverter when replacing?
If you're considering adding battery storage in the next 2–3 years, yes. A hybrid inverter costs £400–£600 more than a like-for-like string replacement now, but saves £1,400–£1,800 when you add the battery later.
Is inverter replacement covered under warranty?
Most inverters carry 5–10 year manufacturer warranty. If yours is under warranty, contact us — we can manage the warranty claim on your behalf at no charge for our installed systems.
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