Decision support · techno-economic model · in-browser optimizer

Find the right renewable energy technology for your home.

Describe your property in under a minute. OffGridIQ screens six technologies for feasibility, sizes the solar options with a Grey Wolf Optimizer, prices everything with 25-year NPV economics, and explains every recommendation in plain language.

Try the demoAbout the methodology

By Ezzah Noor Khan · demo build — runs entirely in your browser on clearly-labelled representative data.

Three climates, three different answers

Fully worked example properties — one per Köppen climate zone. Jump straight to their results:

Barcelona — suburban houseCsa
Mediterranean (Csa) · south-facing roof · balanced priorityHigh grid prices + strong sun: rooftop PV wins on the numbers, with the battery hybrid close behind.See the recommendation →
Istanbul — hillside houseCsa/Cfa
Transitional Csa/Cfa · windy, exposed site · lowest-cost priorityCheap grid power + a big heating load: the heat pump beats generation, and small wind gets a fair, honest comparison.See the recommendation →
Islamabad — house with a large roofCwa
Humid subtropical (Cwa) · flat roof · lowest-carbon priorityAbundant sun on a carbon-intensive grid: a full-size PV array maximizes avoided CO₂.See the recommendation →

Honest feasibility

Six technologies screened per property. What can't work here is excluded with a reason — never quietly scored low.

Real optimization

A seeded Grey Wolf Optimizer sizes the PV array and battery against a 25-year NPV objective — the same metaheuristic family as the thesis this tool extends.

Transparent economics

LCOE, payback and CO₂ for every option, with every assumption surfaced and a one-page PDF summary to take away.