Ok first thing you need to think about is what do you need to power and for how long? Are you hoping for full replacement of your usual electrical usage or are you thinking more something as a backup to power the essentials?
This guides what sort of system you want to look at. You also need to think about budget.
Hopefully these will give you some ideas of what's possible and what it will actually do for you:
Under €1000:
A power station (e.g. a Jackery or Bluetti) recharged on the mains is a good option for short term e.g. a power cut lasting 1 day. It won't be able to power a fan heater or kettle so you'll need alternatives for heating and cooking, e.g. a gas cartridge stove for cooking (but can be hard to find the gas cartridges in Ireland, IME) or a full-on cylinder gas system for cooking. Without a way to recharge it, it's only really going to be good for recharging phones, laptops, etc. We did try running our chest freezer off one while moving house and it worked ok for a couple of hours but it depends on the wattage and output of power station that you get.
A power station combined with a small solar panel is a good option for medium term low energy usage but you need the UV index to be decent. When I lived in Donegal, for example, I found it took a ridiculously long time to get my solar panel to charge my power station outside of the mid-summer weeks.
Try to avoid dodgy unknown brands of power stations. Cheap ones that are badly made (usually with weird names) can be a fire risk.
Over €1000:
Full size solar panels either on the roof or in your garden (or both), with a changeover switch, leisure batteries (the sort for motorhomes) and a total system is the "gold" standard. It's still not a perfect solution depending on where you live though.
Wind turbine (check if this is permitted development, you may need planning consent in most areas of Ireland) with leisure battery system.
The second family featured in this article may also give you an idea of what's possible: https://www.bbc.co.uk/news/articles/cnvqr4v6539o
There are lots of reviews of power stations on YouTube and also people living "off grid" if you need more inspo for your specific situation.