Rooftop solar in Saint Lucia typically costs about EC$4,630 per kW installed, and household electricity is around EC$0.405 per kWh. The average sunshine is about 5.1 peak sun hours a day.
As a rough example, a 5 kW home system would cost about EC$26,620, make around 6,981 kWh a year, and save about EC$2,827 a year. That is a payback of roughly 9.4 years.
Rooftop solar
For homes and businesses. Size, cost, savings and payback.
Open rooftop calculatorSolar plant
For larger projects. Project returns and break-even price.
Open plant calculatorThese are typical estimates, not quotes. Replace them with real quotes before you decide anything.
How to use the Saint Lucia calculator
- Open the rooftop or plant calculator above. It starts on Saint Lucia.
- Pick your region or search your city, so sunlight matches your area.
- Enter your monthly electricity use and replace the starting prices with your own quotes.
- Read the size, cost, savings and payback, and download the PDF report if you want to keep it.
Solar in Saint Lucia: common questions
How much does rooftop solar cost in Saint Lucia?
Rooftop solar in Saint Lucia typically costs about EC$4,630 per kW installed. A 5 kW home system would cost roughly EC$26,620. Real quotes vary by installer, roof and equipment, so use this as a starting point.
How much can I save with solar in Saint Lucia?
With electricity at around EC$0.405 per kWh, a 5 kW system could make about 6,981 kWh a year and save roughly EC$2,827 a year. Your own savings depend on how much power you use and your local price.
How long does solar take to pay for itself in Saint Lucia?
On these typical numbers, a 5 kW home system pays back in roughly 9.4 years. This is a simple estimate: system cost divided by yearly savings. It does not include subsidies, tax credits, price rises or upkeep.
How much sunshine does Saint Lucia get?
The average across the places we list for Saint Lucia is about 5.1 peak sun hours a day. Sunlight differs a lot between regions, so pick your own city in the calculator for a better figure.
Are subsidies or tax credits included?
No. The calculator does not include subsidies, tax credits or special tariffs. Rules differ by country and change often, so check current local rules before you decide.
How accurate is this solar calculator?
It gives planning estimates, not quotes. The starting prices are typical figures for Saint Lucia. Replace them with real quotes and your own electricity price to get a closer result.
Looking at another country? See all countries.