Over five years, a fuel generator used regularly in Jamaica typically burns more money in petrol or diesel alone than the entire price gap to a solar battery system — which then keeps producing free power for another two decades.
Day one vs year five
Generator: cheap entry (a mid-size unit costs a fraction of a solar system), but every hour costs fuel, plus oil, filters and servicing. Run it through Jamaica’s outage seasons and evenings, and five-year running costs commonly reach into the hundreds of thousands of JMD — with nothing owned but a louder, older machine.
Solar with battery: from about J$1.14M installed (6kW hybrid + lithium storage). Fuel cost: zero, forever. It also works every ordinary day, cutting the JPS bill 70–90% — a generator only “earns” during blackouts.
The comparison people forget
A generator is pure insurance; solar is insurance plus an income-like return (avoided bills of roughly J$288,000 a year on a typical setup, with payback in roughly 3–5 years). One depreciates noisily; the other pays for itself and then keeps paying you.
The hybrid answer many customers choose
Battery system for daily savings and instant, silent blackout coverage; a small generator kept for rare multi-day storm outages. The generator barely runs, so it lasts — and your ears and neighbours thank you.
FAQ
Is a generator ever the right choice?
As a backstop for extended hurricane outages, yes — as your primary blackout plan, the economics say no.
How fast does a battery take over in a blackout?
Milliseconds — electronics never blink. Generators need starting, fuel and warm-up.
Can BTECH size a system that replaces my generator use?
Yes — free assessment at btechj.com/solarestimate or 876-777-5488.
