Is 400W or 800W solar better for my home?
It depends on your daytime electricity use, the exact equipment, available space, installation approach and electrical requirements. A larger number is not automatically a better fit.
Plug-in solar learning tool
400W or 800W: which size should you explore?
Use your estimated daytime electricity consumption for a simple starting point. The result helps you ask better questions; it does not approve a product or installation.
System size helper
How much electricity do you use in daylight?
May be worth exploring
400W
A 400W system may be worth exploring for lighter daytime electricity use.
Important: This is a simple estimate, not a generation, savings or installation-suitability guarantee. Check the exact kit, property, mounting approach and electrical documentation before buying.
Not sure about your use? Calculate an appliance firstDoes an 800W system always produce 800W?
No. The number is a nominal rating. Real output changes with light, orientation, temperature, shading, equipment and other conditions.
Does this tool confirm I can connect a kit?
No. It is an educational estimate only. Check the exact kit documentation and obtain appropriate professional advice before installation or connection.