Three-year commercial solar project payback expected thanks to reduced rooftop mounting costs – pv magazine USA


Installed on S-5! metal roof supports, Solar Atmospheres’ 772kW solar PV array, and a 1,561kW/3,122kWh Tesla battery storage system are expected to help the company meet its diverse energy demands.

Solar Atmospheres, a California-based provider of state-of-the-art vacuum thermal processing services, now hosts one of the largest commercial solar + energy storage systems in the state on its roof: a solar photovoltaic system of 772 kW and a 1,561 kW/3,122 kWh solar Tesla Battery Storage System, installed by SunGreen Systems.

Due to the two federal tax incentives the project will receive, additional state-sponsored incentives, and the avoidance of a roof renovation, Solar Atmospheres expects a full return on investment within 30 to 36 months.

The project uses S-5! mounting products and S-5! took the opportunity to prepare a case study, outlining the unique challenges faced by the project and how each was overcome. First and foremost, the project footprint is located on twin metal buildings over 20,000 square feet with American Buildings Long Span III exposed trapezoidal metal roofing. As for the site’s energy needs, the buildings have more than 60 furnaces for vacuum heat treatment and brazing services.

While 60 one-size-fits-all standard furnaces would provide a more predictable energy load, the 60 stoves in Solar Atmospheres’ buildings range from lab-sized research and development furnaces to the largest commercial vacuum furnace, which is up to 48 feet long. , with a capacity of 150,000 lbs. According to S-5! the site experiences very high energy demands and loads, which is why Solar Atmospheres requested the largest solar array the building could handle.

While SunGreen Systems was working on the photovoltaic installation, the company brought in one of its partners, Stem, to offer a combined solar and Tesla battery storage system to reduce demand and arbitrate energy.

S-5!® PVKIT™ 2.0

Developing the solar system with the idea of ​​placing the panels where they fit, SunGreen Systems turned to S-5!, because the company’s products, in this case the PVKIT solar solution and RibBracket III, offered flexibility of design in the mounting locations. Additionally, the lightweight solutions allowed Solar Atmospheres to avoid costly renovations. The relationship between photovoltaic systems and metal roofs is the one that S-5! knows this well, and SunGreen Systems has demonstrated the solution to Solar Atmospheres via a sample kit provided by S-5!. This presentation allowed Solar Atmospheres to find the right clamp for the project by seeing first-hand the factory-installed gaskets that would maintain the integrity of the building.

S-5! also worked with the SunGreen Systems installation team to demonstrate trackless installation best practices, including pre-preparing the modules while other team members performed the electrical work. The PVKIT assembly of S-5! uses clamps designed to grip and secure to metal roofs, both on the edge and on the surface. The kit’s pre-assembled components allow installers to attach PV modules to the seams or structural ribs of the metal roof compared to a traditional rail mounting system.

In total, the facility exists on 52,500 feet2 the footprint of the project, consisting of two roofs and a 40′ x 150′ carport. Of the 772 kW capacity of the installation, 570 kW are contained on the two roofs. The installation is made up of 1,494 United Renewable Energy 380W panels and 14 Tesla Powerpacks.

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