What is Microinverter?
A small inverter attached to each individual solar panel, converting DC to AC at the panel level.
Quick Answer
Microinverters are increasingly popular in Irish installations, particularly for roofs with partial shading from chimneys, dormer windows, or nearby trees. They cost more upfront than string inverters but can deliver 5–20% more energy on shaded roofs. Enphase microinverters are the most commonly installed brand in Ireland.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Microinverter Explained
A microinverter is a compact inverter installed on or near each individual solar panel. Unlike a string inverter, which converts DC to AC for an entire string of panels, a microinverter handles the conversion for a single panel. This means each panel operates independently — if one panel is shaded or underperforming, it does not drag down the others. Microinverters also enable panel-level monitoring and can simplify system expansion. Leading microinverter brands include Enphase and AP Systems.
How Does Microinverter Work in Ireland?
Microinverters are increasingly popular in Irish installations, particularly for roofs with partial shading from chimneys, dormer windows, or nearby trees. They cost more upfront than string inverters but can deliver 5–20% more energy on shaded roofs. Enphase microinverters are the most commonly installed brand in Ireland.
Frequently Asked Questions
Are microinverters better than string inverters?
Microinverters are better for shaded or multi-orientation roofs because each panel works independently. For unshaded south-facing roofs, a string inverter is usually more cost-effective.
How long do microinverters last?
Most microinverters come with 20–25 year warranties, matching or exceeding the lifespan of the panels themselves.
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John Rooney is the founder of Solar Info and has been covering the Irish solar energy market since 2023. He fact-checks all content against official SEAI data and maintains relationships with SEAI-registered installers across Ireland.