Stage 2 of 3 · Plan
Build a structured brief installers can quote against — roof, shading, switchboard, system size. Takes about 3 minutes. No installer contact yet — that's a separate explicit step at the end.
WattMate scope · Step 1 of 5
No installers contacted yet
Roof type and orientation drive system sizing + installation complexity. Don't stress about exact numbers — your installer will verify on-site.
In Perth, north-facing rooftops produce ~10-20% more energy than east/west. South-facing is workable with a larger system.
Why scope before quotes?