Peak Sun Hours
Daily solar energy expressed as equivalent full-intensity hours (1 kW/m²). The US ranges from about 3.5 in the Northeast to 6+ in the desert Southwest. Solar sizing divides daily energy need by this number.
Where this appears in real estimates
This term isn't trivia — it's a working variable. These tools use it directly:
- solar panel estimate tool — Panel count and system kW from monthly bill and local sun hours.…
- solar roi estimate tool — Payback years and 25-year savings from system cost and bill offset.…
Go deeper
- Bagged Concrete vs Ready-Mix — head-to-head decision guide
- Complete Asphalt Driveway Project — full project walkthrough
- Asphalt in Florida — local pricing & climate
- Read the field guide on the blog — practitioner-level detail
- Related engineering article — from our licensed engineer
Reviewed: · Part of the CalculatorAsphalt Construction Glossary · Sources: see methodology & standards.