TL;DR
In solar design, azimuth is the compass direction a roof plane or array faces, measured in degrees clockwise from true north, so 180 degrees means due south, the production optimum in the northern hemisphere. Deviations cost less than intuition suggests: east or west faces at 90 or 270 degrees typically still yield 80 to 85 percent of a south face's annual output.
What it means
In solar design, azimuth is the compass direction a roof plane or array faces, measured in degrees clockwise from true north, so 180 degrees means due south, the production optimum in the northern hemisphere. Deviations cost less than intuition suggests: east or west faces at 90 or 270 degrees typically still yield 80 to 85 percent of a south face's annual output. Designers read it from satellite imagery or an on-roof compass corrected for magnetic declination, and it feeds the production model behind the proposal. Together with tilt and shading, it determines whether a roof plane is worth panelizing.
Where it sits in the glossary
Azimuth is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.