KellyO / Monday, June 30, 2025

Solar Panels: A Guide to Costs and Benefits

Are you considering solar panels for your home? With rising electricity prices and a growing focus on sustainability, more Irish homeowners are turning to solar energy.

This guide explores the costs, savings, technologies, and grants available, helping you understand your options before making the switch.

Why Go Solar?

Lower electricity bills — save up to €1,500 annually.

Increase home energy efficiency
Protect against rising energy costs
Reduce your carbon footprint

Looking for an accurate cost? Post your job on OnlineTradesmen to get FREE quotes from SEAI-approved solar installers.

Solar Technology Options for Homeowners

There are two main solar technologies:

Photovoltaic (PV) panels: Convert sunlight into electricity to power your home and devices.
Thermodynamic panels: Focus solely on heating water, often used as an alternative to immersion heaters.

PV panels are the most common for residential use in Ireland, often paired with battery storage to maximise savings and energy independence.

How Much Electricity Can Solar Panels Generate?

With the right system, solar panels can cover your entire energy needs, even generating surplus energy that can be exported back to the grid for credits. Ireland’s mild climate still allows for solid solar output, cloudy days included.

Battery storage enhances performance by storing unused electricity for night-time use, reducing reliance on the grid.

Solar Panel Installation Costs in Ireland

Here's a general cost breakdown based on current market prices and system setups:

Item	Estimated Range	Average Cost
System Size	8.9 kW	8.9 kW
Total System Price	€13,000 – €16,200	€14,600
Net Price (after SEAI grant)	€10,400 – €14,400	€12,400
Estimated Annual Bill Savings	€1,400 – €1,500	€1,480
Lifetime Savings	Up to €35,500	~€21,000
Payback Period	~9 years	~8.9 years

Designing a Solar PV System

When designing your solar system, consider:

Panel type & capacity (e.g., high-efficiency 445W panels)
Battery storage for energy independence
Hot water diverters for heating
EV chargers for electric vehicles
Smart monitoring to track savings and performance

Space limitations? Opt for high-capacity bifacial panels that generate more power in less area.

Installation Process and Timeline

Installing a rooftop PV system typically takes 2 to 3 days after consultation and design. The process includes:

On-site assessment
System design & quote
SEAI grant assistance
Full installation and system demonstration

Return on Investment & Maintenance

Payback period: 7–10 years depending on usage and system size.
Savings: Up to €35,000 over 20 years.
Maintenance: Minimal, though optional cleaning and inspections are offered.

SEAI Solar Grants in Ireland

The Sustainable Energy Authority of Ireland (SEAI) offers grants up to €2,100 for domestic PV installations:

€900 per kW for the first 2kW
€300 per additional kW (up to 4kW total)
Grant cap reduced from €2,400 to €2,100 in January 2024

To claim, homeowners must apply before installation and use an SEAI-registered contractor, like those on OnlineTradesmen.

Get Started Today

Looking to reduce your electricity bill and carbon footprint? Get a FREE quote from trusted, SEAI-registered installers near you. Post a Job Now on OnlineTradesmen