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Getting the Most from Your Solar Investment
Installing solar panels is a significant investment, and you want to ensure you're maximising every available saving and incentive. With the SEAI grant, Clean Export Guarantee, smart tariffs, and a few strategic decisions, you can significantly improve the return on your solar investment. Here are our expert tips based on thousands of installations across Ireland.
Tip 1: Size Your System Correctly
The SEAI grant provides €900 per kWp up to a cap of €1,800. This means a 2kWp system receives €1,800 and a 6kWp system also receives €1,800 — but the larger system generates three times as much electricity. For maximum grant efficiency, install the largest system your roof and budget can accommodate. A 4kWp or 6kWp system delivers the best value for the €1,800 grant.
Tip 2: Add Battery Storage
The €600 battery storage grant reduces the cost of adding a battery by roughly 25–30%. A battery increases your solar self-consumption from around 30–40% to 70–80%, meaning you use more of your own generated electricity rather than importing from the grid at full price. The combination of the grant and increased self-consumption makes battery storage a smart addition for most households.
Tip 3: Time Your Installation
Solar panels are installed year-round in Ireland, but the optimal time to install is in early spring (February–April). This means your system is commissioned and generating just as the longer, sunnier days begin, maximising your first-year output. Installing in late autumn or winter means you wait longer to see the system's full potential.
Tip 4: Combine Grants
The SEAI allows you to combine the Solar PV Grant with other schemes. If you're also planning insulation, a heat pump, or an EV charger, apply for all applicable grants simultaneously. This holistic approach to home energy can reduce your total costs by several thousand euros.
Tip 5: Switch to a Smart Tariff
Smart (time-of-use) tariffs charge different rates at different times of day. If your supplier offers a smart tariff with cheap daytime rates or generous export payments, switching can add another €100–€200 to your annual savings. Many tariffs offer free electricity at certain times, which you can exploit by scheduling heavy appliance use during these windows.
Tip 6: Optimise Your Self-Consumption
The more of your solar generation you use directly, the more you save. Without a battery, aim to shift as much electricity consumption as possible to daylight hours. Run your washing machine, tumble dryer, dishwasher, and immersion heater during the day. Even small changes — like charging devices during the day rather than overnight — add up over a year.
Tip 7: Maintain Your System
Solar panels require very little maintenance, but keeping them clean and ensuring your inverter is functioning optimally can preserve 3–5% more output over time. In areas with heavy tree coverage or near agricultural land, an annual cleaning can prevent the gradual output loss caused by dust, pollen, and bird droppings.
Tip 8: Monitor Your Generation
All our installations include a monitoring system that lets you track your solar generation in real time. Use this data to understand your generation patterns and adjust your consumption accordingly. The more informed you are about when your system produces the most energy, the more you can shift your usage to match.
Frequently Asked Questions
Should I get the biggest solar system possible?
Within your roof space and budget, yes. The SEAI grant caps at €1,800 regardless of system size, so a larger system gets more generation for the same grant amount.
Is a battery worth the extra cost?
For most households, yes. The €600 grant and increased self-consumption make battery storage a worthwhile addition. You'll typically save an additional €200–€400 per year with a battery.
When is the best time to install solar panels?
Early spring (February–April) is ideal. Your system will be generating at full capacity as the longer days begin, maximising your first-year output.