1 · What matters most to you?

Rank your top priorities 1 (most important) to 5 — you don’t have to rank them all. It shapes whether we lean toward more panels or more battery. There are no wrong answers.

2 · Power cuts

How much do outages affect you? Whether you want the lights to stay on during a cut is the single biggest factor in the system and its price.

Rural and overhead-line supplies tend to see more, longer cuts — which makes backup more worthwhile.
e.g. freezer, heating pump, broadband, well pump, medical equipment.
3 · Your electricity connection

A few technical details. Don’t know one? Choose “Unknown” or leave it — it just flags what your installer should check on site.

Most Irish homes are single-phase. Three-phase is more common on farms, large or newer rural homes.
The most power you can draw at once. We’ve set the usual default (12 single-phase, 29 three-phase) — change it if your ESB Networks letter says otherwise.
Mainly matters if you want backup during a power cut — a TT (earth rod) supply needs extra earthing work for backup. Your installer can confirm; leave as “Don’t know” if unsure.
Open your consumer unit (fuse board) and look for empty slots beside the switches. A full board may need a small upgrade to wire in solar/backup.
A digital meter ESB Networks fitted in recent years (no need to send readings). Needed to get paid for exported power.
Rough distance from your meter/fuse board to where the inverter & battery would go (often a garage, utility room or attic). Longer runs add a little cable cost.
4 · How much electricity you use

The key number behind the whole design. Most accurate from a recent bill or your smart-meter data — an annual total in kWh.

On your bill as the yearly total. A typical Irish home uses 4,000–6,000 kWh; more with electric heating or an EV.
Two-rate plans are cheaper at night; three-rate plans also charge extra at the evening peak (≈5–7pm). A battery is worth more on these plans.
The dearer evening rate on a three-rate plan.
A device (e.g. myenergi eddi) that sends surplus solar to your immersion instead of exporting it — handy if you heat water by immersion. Adds ~€700 installed.
Big electrical loads you have
Tick any — high-power items affect peak demand and what a battery can keep running in a power cut.
5 · Your roof

Where the panels go — this sets how many you can fit and how much power they’ll make.

Ground mount usually lets you pick the ideal due-south angle and fit more panels (~20+), at roughly €1,500–3,000 more than the equivalent roof install.
A rough count of panels the roof could hold. Each is about 1.8 m × 1.1 m; most house roofs fit 8–20. Not sure? Leave it blank and we’ll size from your usage.
6 · Do you already have solar?

Adding to an existing system works differently from a fresh install, so it’s worth asking. Skip this if you’re starting from scratch.

If you already store solar in a battery, we’ll account for it rather than sizing a new one from scratch.
7 · Battery preferences

Any leanings on battery size or brand? Happy to leave it to us? Pick “Open” and we’ll recommend the best fit.

Only fill this if you already know what you want. Otherwise leave blank.
8 · EV & future plans

Things that mean more electricity later — an electric car or heat pump changes how we size things today.

Some newer EVs can power your home or send energy back — still uncommon, but worth flagging.
e.g. setting the dishwasher, washing machine or immersion to run at midday on solar, or overnight on a cheap rate. It helps a battery pay back faster.
9 · Budget & grant

So the costing and payback come out realistic for your situation.

A ceiling, not a target. Leave blank and we’ll size purely on your needs.
Generally yes if your home was connected to the grid before the end of 2020 and you use an SEAI-registered installer.
The Clean Export Guarantee (CEG) rate — what you’re paid for solar you send back to the grid. Around 18–24c.
10 · A couple of practical things

Last questions — then hit Generate.

e.g. a protected structure, an architectural conservation area, or a coastal/scenic location where the usual planning exemption may not apply.