Project / Customer Information

Customer Name

Phone Number

Email (optional)

City / Location

Date

⚙ Design Parameters

Adjust assumptions to refine the calculated system size.

☀ Solar Irradiation

hrs/day

⚡ System Voltage

🔋 Battery Efficiency

📉 Depth of Discharge

🔌 Inverter Efficiency

📦 System Loss Margin

🔀 System Phase

⚡

Existing Solar System

Optional — use this section for retrofit or expansion calculations.

Number of existing panels

Panel wattage (Wp each)

Existing total capacity (auto)

Calculated system recommendation

Recommended Solar System

Live calculation

Wp solar array capacity

☀ Solar Array

→

—

Recommended inverter

Battery Ah

kWh / day

—

System type

Configuration: —Estimated design output • Site assessment required before installation

System configuration

Engineering Snapshot

Solar capacity needed— Wp

Battery capacity needed— Ah

Required inverter capacity0

Max solar supported— kW

Voltage / phase— • —

Night backup energy0 Wh

☀ Solar array

Wp required

🔋 Battery bank

Ah calculated

⚡ Daily production

kWh / day

📈 Annual production

kWh / year

Load breakdown

Daytime solar load vs night battery backup

Top 10 loads

Solar / daytimeBattery / night

Enter appliance quantities to see breakdown.

Energy production estimate

Based on the calculated final panel capacity

25-year design horizon

Daily

kWh / day

Monthly

kWh / month

Yearly

kWh / year

Lifetime

kWh / 25 years

⚙

Appliance Load Design

Enter daytime solar loads and night backup requirements. Battery quantity follows solar quantity unless a row is battery-only.

0 W

Day load

0 Wh

Day energy

0 W

Night load

0 Wh

Night energy

Appliance	Watts	☀ Solar / Day				🔋 Battery / Night
Appliance	Watts	Qty	Hrs/Day	Total W	Wh/Day	Qty	Hrs/Night	Total W	Wh/Night
TOTALS				0 W	0 Wh			0 W	0 Wh

+ Add Custom Appliance

Name

Qty

Watts

Hrs/Day

Night hours auto-set: 2 hours for appliances and 0 hours for motors. You can adjust Night Hrs in the table after adding an appliance.

Sizing detail & design assumptions

Key calculated values from the existing sizing engine.

Daytime load

0 W

Daytime solar energy

0 Wh/day

Total sizing energy

0 Wh

Night backup load

0 W

Required inverter

0 VA

Existing capacity

0 Wp

Additional solar needed

0 Wp

Monthly production

0 kWh

Panel capacity is calculated to cover both daytime appliance running and nightly battery charging across the available sun hours, using the configured efficiency and loss assumptions. This calculator provides an estimated design; final equipment selection and installation should follow a site assessment and detailed engineering review.