Every single one of these boxes/devices in our system is twice as large as shown here, with the exception of the Tesla Powerwall (though, technically, we do have two of those).
The image below shows a single, undersized inverter and diminutive supporting boxes. Add to that two electric car chargers and a spare for guests and our loads were just too large to cram into a single 200 amp electrical sub-panel.Īfter all the load calculations were done, we opted to pull a few of the larger, less critical loads off of the Powerwall battery backup and just backup the “essential” loads in our house. For our house, we do not have anything running on gas, so all our appliances, cooking, and heating are electric. We are installing two Powerwalls, so we’ll talk through the essential loads wiring configuration. Outputs from the RSDs are fed down to a pair of Delta inverters that convert the DC power from the roof down into the AC power that all the electrical goodies in the home want.įrom there, the wiring configuration varies depending on whether Powerwalls are being installed or not. On the inside of the house, the pucks sprout bare wires that connect to one of a handful of these Delta Rapid Shutdown Devices, shown as a small grey box to the right of the rooftop wiring in the image above. The wiring in an array of Tesla solar roof tiles. To ensure a clean fit at the seams, Tesla’s team simply cuts the tiles to match the angle of the seam they will butt up against. Tesla uses these on sections of the roof that are not wide enough for a block of solar tiles and for use along the seams of the roof. These come from the factory as single tiles as well as bundled into Roofing Modules comprised of 3 glass tiles. Tesla calls the non-producing tiles Roofing Tiles, which are simply made from a single sheet of tempered glass.
Each PV Tile comes with its own set of built-in c-clip mounts and stand-offs that hold the top of the tile off of the roof, transferring any weight from above to the roof surface below while also serving to set the correct angle to allow water to run down the roof. PV Modules come with the joints between the three tiles pre-sealed, resulting in what is surely a higher quality, more consistent seal that what can be guaranteed with a field installation. Using PV Modules also reduces the number of on-site wiring connections that need to be made, allowing Tesla to control the quality of more potential points of failure in the roof system at the factory. This helps Tesla deliver a faster turnaround time, means less time for a customer’s home sitting there without a roof, and keeps labor costs down.
IMAGES FOR TESLA SOLAR ROOFS INSTALL
Assembling the tiles together into PV Modules at the factory has multiple benefits, with the first and foremost being a reduction in the amount of effort and time that’s required to install a solar roof.
IMAGES FOR TESLA SOLAR ROOFS FULL
Image credit: Kyle Field | CleanTechnicaĮach PV Tile has a production capacity of just over 8 watts each, translating to 25 watts for a full 3-tile PV Module. Up at the peaks of the roof, it provides protection, funneling any precipitation onto the tiles or surfaces below, which ultimately escort it off the roof.Ī pallet of Tesla PV Module roof tiles. In the valleys of the roof, the metalwork provides the drainage for any precipitation and debris.
A metal trim wraps around the entire roof edge as well as along every peak and valley in the roof structure. This is the white material in the photo above.Īfter the underlayment goes down, Tesla’s crew frames up the roof with metal. This product provides a waterproof foundation for any roof while also providing a skid-resistant surface for the installers to walk on while installing the more complex parts of the roof. Tesla uses Firestone’s CLAD-GARD SA-FR, a standard roofing underlayment for metal roofs. UnderlaymentĪ Tesla solar roof installation starts with the installation of a waterproof underlayment. It also includes many of the same components as a traditional bolt-on solar system, with rooftop wiring, inverters, safety devices, and the like. The solar roof still fundamentally has to perform all of the same functions of a normal dumb roof before its ability to generate power matters. Many of the components and processes used in installing a Tesla solar roof are from the traditional roofing industry, which makes sense.
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