Solar & Battery Sizing for Port-au-Prince, Haiti
The short answer: Port-au-Prince sits at 18.59° N, 72.31° W — subtropical sun. Strong sun most of the year with a mild winter dip. Roughly 1400–1800 kWh per kW of panels per year is a fair expectation band, and the exact number for your roof is what the simulator computes.
What the calculator does for Port-au-Prince
Type "Port-au-Prince" (or use your exact GPS coordinates) into the estimator and it will:
- Simulate five years of hourly NASA satellite weather for your location — not a yearly average, the actual hourly series including bad weeks.
- Size grid-tie bill-cutting systems at 60%, 80%, and 95% targets, with payback from your own tariff.
- Size fully off-grid systems at three reliability tiers — from "never needs a generator" to "a few generator hours a year".
- Compare battery chemistries by true lifetime cost: LiFePO4, sodium-ion, and lead-acid including replacement cadence.
- Produce a hardware parts list with panel count, bank configuration, inverter class, and cable gauges, exportable as CSV.
Worked example: a 10 kWh/day household
Using the Port-au-Prince latitude band (1400–1800 kWh/kWp/yr), a household using 10 kWh per day typically lands in this range — a rough illustration from the band (with a dark-week margin), not a simulation; your exact figures come from running it:
| Bill cut | Typical panels | Typical battery |
|---|---|---|
| ~60% | 1.5–2.5 kW | 3–5 kWh |
| ~80% | 2–3.5 kW | 4–7 kWh |
| ~95% | 2.5–4 kW | 5–9 kWh |
Payback depends on your local tariff: at ~$0.33/kWh a 60% cut on this load saves roughly $723/year, which repays landed-DIY component costs (about $1,676) in about 2.3 years. Where power is cheap, payback stretches — the tool shows your personal number from your own rate.
Why simulate instead of estimate?
Sun-hours maps and "average" figures hide the week that decides your battery size. In subtropical sun conditions, strong sun most of the year with a mild winter dip. A five-year hourly simulation catches that dark week, the cloudy month, and the seasonal swing — which is the difference between a system that works and one that leaves you in the dark in February.
Run the Port-au-Prince simulation now. Free, no signup, nothing for sale. Every number computed in your browser from real satellite weather.
⚡ Size my Port-au-Prince systemOther cities
Related guides
- How to cut your electricity bill with solar (honest math)
- Is a home battery worth it?
- Off-grid vs grid-tied: which pays back faster?
- What size solar system for off-grid?
- About the method (NASA weather, derates, update cadence)
Frequently asked
How much solar do I need in Port-au-Prince?
It depends on your daily kWh use. As a rough band, Port-au-Prince sits in the subtropical sun zone with roughly 1400–1800 kWh produced per kW of panels per year. A 10 kWh/day household typically lands between 3 and 6 kW of panels depending on the bill-cut target. The free calculator computes your exact numbers from five years of NASA satellite weather at your coordinates.
Does solar work in Haiti?
Yes — Subtropical sun at 18.59° N, 72.31° W. Strong sun most of the year with a mild winter dip. The simulator sizes against your worst week, not the average, so the result is honest about winter.
Is the Port-au-Prince solar calculator free?
Completely. No signup, no email, nothing for sale. You type your city or coordinates, enter your bill or daily usage, and get off-grid tiers, bill-cut scenarios, payback, and a hardware parts list — all computed in your browser.