Frequently Asked Questions
Everything you need to know about solar, grants, and our platform
Solar Panels
How much does a solar panel system cost in Ireland?
After the €1,800 SEAI Solar PV grant, a typical 4kW system costs €5,400-6,800 net. Payback period is around 4 years with current electricity rates.
How much electricity will solar panels generate?
A 4kW system generates approximately 3,700 kWh per year in Ireland, enough to cover 60-80% of average household usage.
Do solar panels work in Irish weather?
Yes! Solar panels work with daylight, not direct sunlight. Ireland gets sufficient daylight year-round for viable solar generation.
What size system do I need?
Most Irish homes need 3-6kW. Check your annual electricity usage (kWh) on your bill and use our calculator for a personalized recommendation.
SEAI Grants
What SEAI grants are available?
Solar PV: up to €1,800 • Battery Storage: no SEAI grant currently available (removed Jan 2024) • Heat Pump: up to €12,500. You can claim multiple grants for different upgrades.
Who is eligible for SEAI grants?
Homeowners of properties built and occupied before 2021, with a valid BER certificate, using SEAI-registered installers.
How long does the grant application take?
Applications are typically processed within 8-14 weeks after submitting all required documentation.
Do I apply before or after installation?
After. Complete the work, pay in full, then apply within 6 months with proof of payment and installer declaration.
Can landlords claim SEAI grants?
Yes, landlords can claim grants for rental properties that meet the eligibility criteria.
Battery Storage
Do I need a battery with solar panels?
No, but batteries maximize savings by storing excess solar energy for use at night when electricity rates are higher.
What size battery do I need?
Most Irish homes benefit from 5-10kWh. Use our Battery Optimizer to calculate optimal size based on your usage patterns.
Can I add a battery later?
Yes, batteries can be added to existing solar systems. The €2,400 grant is still available if you meet eligibility criteria.
What is night rate arbitrage?
Charging your battery during cheap night rates (€0.22/kWh) and using stored energy during expensive day rates (€0.41/kWh) to save money.
Heat Pumps
What BER rating do I need for a heat pump?
Minimum C3 rating required. Heat pumps work best in well-insulated homes (B3 or better recommended).
Will a heat pump work in my old house?
Possibly, but you may need insulation upgrades first. Use our Heat Pump Checker to assess suitability.
Air source vs ground source - which is better?
Air source is cheaper (€14k vs €20k) and easier to install. Ground source is more efficient but requires more land/works.
What are the running costs?
Typical running cost is €800-1,200/year, saving €1,200-1,500 compared to oil heating.
Finding Installers
How do I find a good installer?
Use our installer directory to compare SEAI-registered contractors. Check ratings, completed jobs, and response times.
Why must I use an SEAI-registered installer?
SEAI grants require registered installers. They have training, insurance, and follow quality standards.
How many quotes should I get?
We recommend 3-5 quotes. Our platform connects you with multiple installers to compare prices and services.
What should I ask installers?
Ask about: warranty terms, installation timeline, system monitoring, maintenance requirements, and grant application support.
Platform & Premium
Is SolarGreen.ie free to use?
Yes! All calculators, grant guides, and the installer directory are 100% free. The Premium plan (€4.99/month), which unlocks the month-by-month generation breakdown, is optional.
What do I get with Premium?
Advanced calculators with charts, PDF reports, scenario comparisons, grant application tracker, and priority support.
How do installers join the platform?
SEAI-registered installers can sign up at /installers-portal. Plans start at €49/month with 14-day free trial.
Do you sell or install solar panels?
No, we're a platform connecting homeowners with verified installers. We don't sell equipment or install systems.
Still have questions?
Can't find what you're looking for? Our calculators and grant guides have detailed information, or you can contact SEAI-registered installers directly through our platform.