White Papers

What NREL's soiling research says about lost solar output and how commercial owners can set a site-specific cleaning schedule.

What the ANSI/IWCA I-14.1 window cleaning safety standard covers and how it sits alongside the binding Cal/OSHA and OSHA anchor rules.

The insurance and license documents California property managers should collect from window cleaning and pressure washing contractors, and how to verify them.

What the Bay Area stormwater permit means for pressure washing commercial property: the non-stormwater ban, city enforcement and wash-water capture practices.

What California Title 8 §3282, §3283 and OSHA 1910.27 require of Bay Area building owners: written assurance, annual inspection, OPOS and anchor rules.

How commercial solar owners can keep panel cleaning consistent with module warranties, based on NREL O&M best practices: methods, water quality and records.