Solar Power Needs Calculator
Tell us what you want to power, how long you'll use it, and where you are — and we'll calculate exactly what solar system size you need.
What will you power?
Select devices to power
Select all that apply — we'll calculate total load
Daily usage hours
4 hrs/dayBackup duration needed
1 dayYour climate / location
Your Solar Estimate
Mid-Range KitTotal Peak Load
125W
Daily Energy Need
500 Wh
Recommended Battery
589 Wh
Solar Panel Input
125W
Suggested System
Mid-Range Solar Generator (600–1200Wh)
*Estimates only. Add 20% buffer for real-world conditions.
Calculator FAQ
How accurate is the Solar Power Needs Calculator?
The calculator provides estimates based on typical device wattage and usage patterns. Actual results vary based on specific devices, ambient temperature, and panel efficiency. Always add 20% buffer to any calculation for real-world conditions.
What does 'watt-hours' mean?
Watt-hours (Wh) measure energy over time. A 100W device running for 5 hours consumes 500Wh. Your solar generator's capacity is also in Wh — match or exceed your daily consumption for reliable operation.
What if my needs exceed one unit's capacity?
Many Lassola systems support expansion panels (to charge faster) and some support parallel connection (to double capacity). You can also stagger device usage to stay within capacity.