Solar knowledge center

Understand the numbers behind your system

Straightforward guides designed to work alongside our calculators.

Solar Basics

Understand system components and how solar power flows through a home.

Learn how sunlight data affects solar production estimates.

Compare solar resource and PV output by location.

Learn capacity, voltage, depth of discharge, cycle life and chemistry.

Use realistic appliance loads when sizing solar and backup systems.

Understand utility rates, fees and escalation assumptions.

Compare flat, tiered and time-of-use electricity pricing.