Five tools. Every assumption visible.

Independent preliminary decision support

These browser-based tools use public formulas and inputs you control. They do not rely on factory product tables, supplier pricing or hidden engineering assumptions.

Built for transparent screening.

Calculations run locally in the browser. PVRack does not add undisclosed manufacturer data or pretend that a preliminary number is a construction specification.

Where the line is drawn.

These tools do not issue stamped calculations, product selections, final BOMs or foundation sizes. Local codes, site evidence and qualified engineering remain controlling.