Dublin rain doesn't clean your panels — it makes them worse. Bird muck, salt, lichen, and grime are silently draining up to a quarter of your solar output.
Most homeowners assume rain does the job. It doesn't. Here's what's actually sitting on your roof right now.
Acidic and opaque. A single bird dropping can block an entire cell, reducing a panel's output by up to 50%. They bake on in summer and don't wash off in rain.
Dublin is a coastal city. Sea salt deposits build an invisible haze across your panels that worsens with every breeze. This alone cuts efficiency by 5–10%.
In Ireland's damp climate, lichen takes root on panel edges and frames. Left unchecked it creeps across the glass and causes permanent micro-scratching.
Dublin's pollen season runs from February through September. Grass pollen peaks in June and July across the Liffey valley and southside suburbs. Tree pollen from birch, oak, ash, and plane trees hits hard from March to May — particularly around Phoenix Park, Trinity, and the tree-lined roads of Rathgar, Ranelagh, and Dartry. Rapeseed pollen drifts in from surrounding farmland in Meath and Kildare. Each wave leaves a fine yellow-green film that rain bakes into a sticky residue, compounding with every cycle.
Average energy loss from panels that haven't been cleaned in 6 months in the Dublin area
A single professional clean typically pays for itself within 2–4 months through recovered energy output.
Studies consistently show 15–25% energy recovery after a professional clean. On a typical 4kW Dublin system, that's €200 or more back per year in avoided electricity costs.
Dirt and lichen cause micro-abrasions that degrade the anti-reflective coating. Regular cleaning keeps your panels performing for their full 25–30 year warranty.
Many panel manufacturers require regular maintenance to honour their warranty. A professional clean is the easiest way to stay covered.
We use only purified deionised water — zero chemicals, zero runoff. Better for your roof, your garden, and Dublin Bay.
Tap water leaves mineral deposits that attract more dirt. Our deionised water evaporates clean, so panels stay cleaner for longer after we've been.
Every job photographed and sent to you same-day. You'll see exactly what we removed and the difference it makes.
Short answer: every six months. Here's why, depending on where you are in Dublin.
Even in a typical suburban estate, six months is enough for pollen, dust, and bird droppings to cost you serious output. A spring and autumn clean keeps you at peak year-round.
If you're near the coast (Howth, Dún Laoghaire, Malahide) or under trees, salt and organic debris build up fast. Every six months is essential — some customers book quarterly.
Agricultural dust, rapeseed pollen, and heavy bird activity mean rural and farm panels get filthy fast. Biannual cleaning protects your investment and maximises SEAI grant returns.
€39 callout + €7 per panel. No hidden fees, no brackets — just honest maths. Type in your panel count below.
One-off payment. No subscriptions. No card details until you're ready.
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Two Trinity College Dublin students on a mission to keep Dublin's solar panels spotless.
1st year Computer Science and Business student at Trinity College Dublin.
1st year Political Science and History student at Trinity College Dublin.
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