Herringbone

Photovoltaic panel roof herringbone slope

The 30-degree rule is flexible: While 30 degrees is often cited as optimal, any roof pitch between 15-45 degrees will deliver excellent solar performance, typically within 5-10% of peak efficiency. Don't let imperfect pitch discourage you from going solar. Latitude-based calculations provide better. . Choosing the right roof slope for solar panels affects energy production, installation cost, and long-term performance. That's essentially what photovoltaic panels on herringbone slopes bring to the renewable energy table. [PDF Version]