FREE PRELIMINARY SOLAR DESIGN

Find the solar system your home or business may need.

Tell us what you want to power. KsT will estimate your daily energy use, peak load, inverter, battery and solar-panel requirements — then you can request a detailed engineering design.

✓ Ghana-focused assumptions✓ Appliance-by-appliance✓ No obligation

10+design outputs

48hoptional backup target

PV + Batteryhybrid-ready sizing

Start calculator

STEP-BY-STEP

Build your preliminary system

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1. Property & design conditions

These values influence the calculation. If you are unsure, keep the Ghana-focused defaults.

Property type System objective Peak sun hours (PSH)Default: 3.5 PSH. Use a site-specific solar resource when available. PV system loss / deratingIncludes temperature, wiring, dust, mismatch and conversion losses. Target backup hoursFor backup loads. Change to 24–48h for higher autonomy. Battery usable DoDLiFePO₄ planning default: 90%.

2. Your appliances & loads

Enter realistic running hours. Use the surge multiplier for motors/compressors where applicable.

Appliance	Qty	Watts each	Hours/day	Surge ×	Backup?

Daily energy0.00 kWh

Running load0.00 kW

Estimated surge0.00 kW

Backup load0.00 kWh/day

3. System preferences

These settings help us turn your load profile into a preliminary system recommendation.

Preferred panel wattage Battery nominal voltage Inverter safety marginApplied to estimated simultaneous/surge demand. PV design marginExtra PV capacity for battery charging and practical variation. Panel/system efficiencyDefault: 90% planning efficiency. Inverter efficiencyUsed for battery energy estimation. Battery round-trip/charge planning efficiency

Important: The result is a preliminary planning estimate. Motor starting current, AC compressor behavior, site conditions, cable runs, inverter MPPT limits, battery communication and protection requirements must be verified before installation.

YOUR PRELIMINARY RESULT

Recommended system

Calculated from the information you entered.

Design checks

Customized designWe size around your actual loads rather than a one-size package.

Engineering reviewFinal equipment selection is verified against site and manufacturer limits.

Built for GhanaUse Ghana-relevant assumptions, then refine them with site data.

BEFORE YOU BUY

What the calculator does — and doesn't — do

Why is my final system different?

Automated sizing uses your declared loads and assumptions. Final design may change after checking actual appliance ratings, motor starting currents, site solar resource, temperature, roof space, cable distances, inverter limits and battery specifications.

Why does backup sizing use different energy?

Backup systems should normally prioritize essential loads. Mark only the appliances you expect to keep running during an outage; the calculator sizes backup energy from those loads.

Can I use the result to buy equipment?

Use it as a planning estimate. Do not purchase equipment solely from an automated result. Ask KsT to verify the configuration, protections, string voltage/current and battery compatibility.

Does this calculate my exact ECG bill?

No. Electricity tariffs can change and actual bills can include charges beyond a simple energy calculation. For tariff information, refer to PURC's current tariff publications.