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Solar Inverter Replacement Cost Calculator

Estimate parts, labor, lifespan remaining, and replacement timing

A UK solar inverter fault can stop export, self-consumption, and SEG income until the system is repaired. This calculator separates replacement equipment from labour, then compares the system age with a planning-life window for string, micro, and hybrid inverters. Use it for budget planning before checking the serial-number warranty, MCS installer paperwork, and local qualified electrician availability.

Enter Your Details

Choose the equipment type you are replacing. Microinverter estimates model a whole-system replacement; single-device swaps are usually lower.

kW

Use the DC size from your quote, monitoring portal, or interconnection paperwork.

years

Used to estimate whether replacement, monitoring, or urgent diagnosis is the next step.

Choose high if the inverter is hard to access, roof work is needed, or local electrician rates are high.

Fill in the form and click Calculate to see results.

Next best actions

Use the replacement estimate to decide whether to quote service now, check warranty terms, or keep monitoring.

How to Use This Calculator

Choose the inverter type, enter system size in kW DC, add the system age, and pick a labour-market setting. Use high labour for difficult access, roof work, or troubleshooting multiple devices. For "solar inverter replacement near me" queries, use this calculator for budget framing and local/MCS checks for provider selection.

Formula & Methodology

Installed replacement range = equipment range + labour range. Equipment and labour assumptions are converted to pounds for planning. String and hybrid inverters use a 10-15 year planning window; microinverters use a longer 20-25 year planning window. Use the manufacturer warranty and MCS installer documents for the binding terms.

Frequently Asked Questions

The installed cost is usually a mix of replacement equipment and qualified labour. Use this calculator for a planning range, then confirm with your MCS installer or a qualified solar electrician.
tool_name: Solar Inverter Replacement Cost Calculator UK | inputs: inverterType, systemSizeKw, age, labourMarket | outputs: installed_cost_range_gbp, parts_range_gbp, labour_range_gbp, lifespan_remaining, replacement_recommendation | data_sources: MCS(installer_context), Ofgem(consumer_energy_context), manufacturer_warranty(inverter_terms) | last_updated: 2026-07-03