Solar Panel Warranties - Essential for Long-Term Value

Getting solar panels with the right warranties is crucial when making a long term investment in your home.

Author

Briain Kelly
April 15, 2026

Inside this Edition:

  • Getting the Best Warranty for Your Solar Panels

  • Solar Power Breaks Multiple Records in March

  • Understanding the Efficiency of Heat Pumps

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Getting the Best Warranty for Your Solar Panels

When it comes to choosing a solar installer, one thing you should pay close attention to is the panels they use and their warranties. A solar PV system can last for 30 years or more, so you want long-term protection for your investment.

There are two categories of warranty that solar panels come with:

  • Product Warranty: The regular warranty against defects in the manufacturing of the panels.

  • Power Guarantee: A guarantee that the panels will retain a specified level of their original power output by the end of the warranty term.

Solar panel warranties can vary greatly in their length. Whether you have a 15-year or 25-year warranty makes a huge difference for your peace of mind. This is especially true if you’re going to be spending roughly €10,000 having them installed.

Market-leading power guarantees can now last for 25 - 30 years. Good solar panels will promise that roughly 87% of their original power output will remain by the end of that period.

Solar panels are a long term-investment in your home, which is why you should look for the strongest possible protection. A lower price might seem appealing now, but you can pay for it down the line.

Record-Breaking Month for Solar Power Production in March

Nearly 50% of Ireland’s electricity came from renewable sources again in March, in what was a record-breaking month for grid-scale solar.

On three separate days in March, grid-scale solar farms broke previous records for peak power production.

  • March 6 - 950MW

  • March 19 - 979MW

  • March 21 - 983.46MW

These three days saw peak output of close to 1GW (1,000 MW), enough to power roughly 500,000 homes.

These figures also only concern grid-scale solar farms, and don’t take into account the ever-growing level of rooftop solar production.

"While solar power is currently a relatively small component of the overall fuel mix across a month, these record peaks demonstrate its ever-increasing importance as a source of renewable energy in Ireland as we work towards a more sustainable and renewable ready electricity grid.

“Looking in particular at the instantaneous power that grid-scale solar can provide, it can meet over 20% of demand at times.

"It’s also interesting to see how much of an impact rooftop solar is having on overall system demand. On brighter days less of Ireland's electricity needs are now served by large scale grid connected generation. This is helping to further reduce our reliance on non-renewable sources of electricity."

- Charlie McGee, EirGrid System Operational Manager

What Does a Heat Pump’s Efficiency Mean For Your Bills?

The most common selling point of heat pumps is how much more efficient they are than boilers. This is how they save you money.

But what exactly is meant by the efficiency of a heat pump? How is it measured, and is it constant? Most important of all, what does that efficiency mean for your heating bill?

Understand everything you need to know about heat pump efficiency to help make your decision.

A guide to understanding the efficiency of heat pumps

Heat pumps are highly efficient heating systems. But what does that mean, what affects their efficiency levels, and how can you ensure that you get the best value from your home heating system?

Energy Efficiency Ireland

That’s it for this week. If you want to learn more about how you can save more in your home while living more sustainably, then keep an eye out for our next edition.

Briain Kelly,