Solar Gear
Build a solar system, component by component
Six roles, in the order you buy them. Enter your system size and every role tells you the spec to shop for — or arrive here straight from the calculator with your numbers already filled in.
Solar Panels
The array is sized by how much energy you use over a year, not by how much power you draw at once. Rigid residential modules are typically 400-500W each.
Choosing guide → RegulationCharge Controllers
Sits between panels and battery in an off-grid or hybrid system. MPPT harvests roughly 20-30% more from the same array than PWM, and lets you run higher-voltage panels on thinner cable.
Choosing guide → ConversionInverters
Converts DC to AC. Sized by power, not by energy — your largest simultaneous load plus the surge of whatever motor starts under it. This is the component most often undersized.
Choosing guide → StorageSolar Batteries
Sized in usable kilowatt-hours, against your critical loads and how many days of autonomy you want — not against your whole-home average, which overbuilds by roughly four times.
Choosing guide → StructureMounting & Racking
Roof racking is cheapest and couples the array's life to the roof's. Ground mounts cost roughly double and let you set optimal tilt, which matters most where winter production is the constraint.
Choosing guide → All-in-oneComplete Kits
Panels, inverter, racking and wiring pre-matched in one package. You give up some flexibility and usually pay slightly more per watt, in exchange for removing every compatibility question.
Choosing guide →⚠️ These are planning figures. Confirm final equipment sizing with a licensed electrician before ordering — particularly the inverter and anything connecting to your service panel.