Inverter Systems & Replacements — Green Guardians
HomeInverters

Inverters that keep your system honest

The inverter turns your panels' DC output into usable AC power. It's the hardest-working component in any solar system — and the one most likely to bleed away performance quietly as it ages. We supply, fit, and configure the right unit, and replace tired ones before they cost you.

Inverters — Green Guardians
Why It Matters
The component that quietly decides your output

Panels rarely fail outright. Inverters are different: they run constantly, they generate heat, and their efficiency drifts downward over time. An aging unit can shed 20–35% of its rated efficiency without throwing a single obvious error — you just see a slightly higher bill and assume it's the weather.

We work with all three main topologies. String inverters suit consistent, unshaded roofs. Parallel arrays add redundancy for larger or split installations. Hybrid inverters manage solar, battery, and grid import together — the right choice if storage is on your roadmap.

If your system is more than eight years old, an assessment is worth it. The cost of a replacement is real, but so is the output you're losing every month it goes unaddressed.

Inverter Efficiency by Type
98%
Peak hybrid inverter efficiency
Hybrid
98%
String
97%
Parallel
95%
Aging (>8yr)
63%
£3,200
Avg replacement cost
37%
Avg loss on aged unit

The right unit for the right roof

String inverters

Series-connected and cost-effective. The reliable default for consistent, unshaded roofs with a single orientation.

Parallel arrays

Multiple inverters for redundancy and flexibility — ideal for larger systems or roofs split across orientations.

Hybrid inverters

Manage generation, battery charge/discharge, and grid import in one unit. The foundation for any storage-ready system.

Replacements & upgrades

Swapping an aged or failing unit, correctly sized and reconfigured, with monitoring re-established afterwards.

Efficiency assessment

We measure what your inverter is actually delivering against what it should be — and quantify any loss.

Configuration & sign-off

Correct settings for your tariff and export arrangement, with certification on completion.

An inverter check includes

A clear picture of what your inverter is doing now, and whether it's worth changing.

  • Live efficiency measurement against the unit's rated and expected performance.
  • Age and degradation review with an honest view on remaining useful life.
  • Topology recommendation string, parallel, or hybrid — based on your roof and plans.
  • Battery-readiness check if storage is something you're considering now or later.
  • Correct tariff configuration so export and self-use are set up properly.
  • Written findings with costed options and no pressure to proceed.

Older system? Get it checked.

If your inverter is past eight years, a quick assessment tells you what you're losing — and whether a replacement pays for itself.