The Toolkit
What your building needs, calculated.
Answer one question honestly — what actually runs in your building — and the mathematics answers the rest.
How this is calculated.
Your appliance list gives daily energy. Panels are sized against Nigerian sun hours and system losses; batteries against your chosen autonomy and depth of discharge; the inverter against surge, not steady load. The ₦ band applies the disclosed cost assumptions — editable above.
dailyKwh = Σ(watts · qty · hours) / 1000 panelKw = dailyKwh / (sunHours · derate) batteryKwh = dailyKwh · autonomy / DoD inverterKva= runningWatts · surge / 1000 cost = panelKw·₦/kW + batteryKwh·₦/kWh + inverterKva·₦/kVA
Questions
How accurate is the ₦ range?
It is a band, not a quote — built from current supplier pricing our team updates periodically. Site conditions, roof type, and cable runs move the final number.
Why is my inverter bigger than my load?
Motors (pumps, ACs, fridges) surge on start-up. We size the inverter for that surge, not the steady load.
What is depth of discharge?
How much of a battery's capacity you can safely use per cycle. Lithium tolerates ~80%; using more shortens battery life.
Glossary
Need this done in the field?
Talk to our engineersEstimates use the assumptions shown, editable above. Final sizing requires a site audit.
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