Guides
Energy and backup power guides
How to size solar arrays, battery banks and standby generators from the load you actually have, with the losses, ratings and derating factors that the sales brochures leave out.
Backup and renewable power in Pakistan is sized badly more often than it is sized well: arrays that never fill the batteries, generators that stall on the first motor start or idle at a quarter of their rating for years. These guides walk through the arithmetic, and pair with the energy calculators that do it for you.
How to size a solar system
A step-by-step method for sizing a rooftop or off-grid solar system in Pakistan: measure the energy, find the peak sun hours for your site and worst month, apply honest losses, then choose panels, battery, inverter and cables that fit each other.
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Running load, motor starting, kW against kVA, prime and standby ratings, derating for heat and altitude, and the trap of an oversized diesel: how to arrive at a generator size that starts everything and still runs healthily.
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