First look at Tesla’s biggest solar roof installation yet – it’s massive

Tesla has installed the largest solar roof installation we’ve seen to date, and it’s massive. Interestingly, the solar array is in Florida as Tesla managed to protect the system against hurricanes.

Last month, we reported on Tesla who claimed they had reached 1,000 solar roof production per week.

They made this claim based on the production of 4 MW solar roof tiles in one week.

We suggested it was a stretch as the average Tesla solar roof system would be 4kW which we think is extremely low.

This new system, which was activated last week in Orlando, Florida, confirms our suspicions as it is an 18 kW system.

It’s the largest system we’ve seen so far, but let us know if you know of a bigger Tesla solar roof.

The new solar roof was installed on the roof by Devaloy and Darylaine who could be said to be perfect Tesla customers. You have invested in Tesla since 2012. Devaloy, a computer engineer, has a 2013 Model S and Darylaine, a lawyer, has a 2016 Model X. They also plan to buy their son a Model 3 for his high school graduation.

All of the family’s trips are made in Tesla electric vehicles, but the Florida electrical grid is powered, which gets most of its energy from coal and natural gas.

When Tesla announced the solar roof, they quickly decided to reserve it, and when Tesla launched Version 3 last year, they started moving the project forward.

Here Devaloy shared a full schedule of the project with Electrek:

  1. We were early adopters of the solar roof; reserved “smooth” tiled roof in May 2017.
  2. On November 13, 2019, we were given the opportunity to start the project if we switched to “structured” tiles. We made. We sent the electricity bill to Tesla (with a daily average consumption of 96 kWh).
  3. On November 18, Tesla announced that they had finalized their proposal, which they presented in an online meeting the next day.
  4. On November 19th, we sent a form to the Architectural Review Board (ARB) of our homeowners association asking for approval of the project.
  5. On November 26th, Tesla informed us that our utility company (Duke Energy) required us to take out additional insurance (USD 1 million liability) because the system is> 10 kW. We got it for an additional $ 180.
  6. On November 26th, our homeowners association approved the project.
  7. On November 29th, we were asked to conduct an online survey on electrical and air conditioning systems in place.
  8. On December 4th, Tesla conducted the on-site survey.
  9. On February 12, the state of Florida (one-time event) approved the installation of the solar glass tiles, so approval began (likely continued).
  10. We have planned to start the installation on February 19th.
  11. Installation started on March 2nd:
    1. The first 2 days were old cracks in the roof; A mobile dumpster was parked in the driveway.
    2. Crews with variable numbers worked from Monday to Saturday for two weeks
  12. The smaller Tesla crew worked another 3 days to take care of the final details. the total of 15 days to complete
  13. Final inspection of the district on March 24th; Waiting for the Power Company’s power meter to officially operate the system

As a result, it took Tesla 15 days to complete the installation. This is longer than what the company is aiming for despite the size of the system. One extenuating factor, however, is that Tesla has tried to make sure the roof is hurricane-proof since it is in Florida.

Here is the result:

As you can see, they also have 4 power walls for 54 kWh of energy storage, which should enable them to use their solar power at night.

You also have a backup gateway to use the powerwalls for backup power and 3 inverters.

Devaloy explains the need for multiple inverters:

“The key point with multiple inverters is as follows: During a daytime power failure, excess solar energy (after switching on at home and with full power walls) cannot be fed into the grid. Therefore, one or more of the inverters must be shut down. Several inverters can shut them down independently of each other until the Powerwall energy is used again. As soon as powerwalls have reached a certain threshold value, shutdown inverters can be switched back online to recharge powerwalls. This scheme continues in daylight throughout the power outage. “

The new Tesla solar rooftop owner also shared the first picture we saw of Tesla’s Solar Gateway:

We recently learned more about the gateway in the Tesla Solar Roof Owners Guide, which you can access here.

On the cost side, Devaloy told Electrek that before incentives it adds up to $ 100,000.

It sounds high, but you have to keep in mind that it is a 3400 square foot roof with an 18kW solar panel and 4 powerwalls.

When the cost of the actual solar roof is broken down, it was $ 23,830.78 for the regular tiles and $ 47,723.21 for the solar roof tiles for a total of $ 71,553.99 – before incentives, which can cut costs by 26%.

It comes out to $ 7 per square foot and $ 2.65 per watt (before incentives).

What do you think? Let us know in the comments section below.

Tesla solar and energy storage products could be a great solution for your home or business. You can use our code (frederic5610) for a $ 250 award for a solar panel installation. However, we recommend seeking quotes from more than one installer to ensure you are getting the best power solution for your location. UnderstandSolar is a great free service that allows you to connect with top solar installers in your area for free for personalized solar estimates.

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