Solar and backup planner
Size your backup system
Answer four quick questions and get a starting estimate for your inverter and battery. Our team confirms exact sizing on a free call.
1Your appliances
No appliance found. Add your own below.
Add your own appliance
2Power setup
System type
Backup hours needed
Share of daily use at night
Days without sun
Extra margin for future load
Battery type
Lead-acid battery size
System voltage
3Solar
Your city
Peak sun hours per day
Solar panel size
Share of daily use from solar
In backup mode the panel count shows what you would need to recharge the battery each day. Choose Hybrid for a solar bill-saving system.
4Savings
Your monthly electricity bill (optional)
Average price per unit
Leave the bill empty and we estimate from your appliances. Savings assume solar energy replaces grid units.
Your system plan
Everything updates live as you change your answers above.
Where your power goes
A typical day (kW)
Lithium vs lead-acid for this plan
| Lithium | Lead-acid (VRLA) | |
|---|---|---|
| Bank size | - | - |
| Units needed | - | - |
| Usable capacity | 90% | 50% |
| Battery cost | - | - |
Lithium packs are counted by kWh, lead-acid by 12V units wired in series and parallel.
Installation guide
- Battery cable (copper)-
- Battery breaker-
- AC output breaker-
- Roof area needed-
- Expected solar energy-
Indicative values for short cable runs. Our installer confirms cable, protection and earthing on site.
Indicative budget and savings
- Solar panels-
- Inverter-
- Battery bank-
- Installation and accessories-
- Estimated total-
Indicative only. Final price depends on brands, site and the quote from our team.
Common questions
What is the difference between hybrid and off-grid?
A hybrid system uses solar, battery and the grid together, so you keep the grid as a backup. Off-grid runs only on solar and battery and needs a larger battery and array.
Why does my inverter need to be bigger than my load?
Motors in fridges, pumps and air conditioners draw extra power for a moment when they start. The inverter size includes room for that surge.
Lithium or lead-acid battery?
Lithium gives more usable capacity and is lighter. Lead-acid costs less to buy but only part of its capacity is usable. The table above compares both for your plan.
How accurate is this planner?
It gives a solid starting point. Real sizing also depends on roof shading, cable length and the exact appliances, so our team confirms everything before you buy.
Want this checked by an engineer?
Send your plan on WhatsApp and we will confirm the sizing and share a clear quote.
Size your backup system - Taiyonex