How much of Tesla¡¯s Solar Gigafactory did California just vote to buy? - SolarStar

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May2018
How much of Tesla¡¯s Solar Gigafactory did California just vote to buy?Tags£ºTesla  Solar Gigafactory  solarcity 

Today, the California Energy Commission unanimously approved nation’s first requirement that all new homes include solar generation by 2020.

The 2019 Building Energy Efficiency Stards goes much farther than just solar power. The document represents California trying to make 1/9th of its emissions disappear through the intelligent implementation of currently available technologies, including solar films on glass, smartly sized efficiently designed hot water tanks air conditioners, lighting, solar power energy storage. The document also provides the rough equation on how much solar must be installed, how to install it.

Questions of scope broader effect remain, one question that cannot be answered just yet is how broadly this legal requirement will alter the residential solar power hardware marketplace.

Abigail Ross Hopper, SEIA’s president CEO said:

This is a precedent-setting policy — one that will bring enormous benefits cost savings to consumers.

One precedent being set is that from time of home design, the consideration for integrating solar power will be taken. if you’re going to be integrating solar power from time of design, you’re going to do things differently. In fact, you might choose to buy a Solar Roof from Tesla  because it is perfectly suited for the new housing market as it combines stard roofing product plus solar power.

How much solar power could suddenly be in dem from manufacturers like Tesla who make unique products tying together form function?

The Tesla Solar Roof is every bit as beautiful as I hoped. Hoping @PGE4Me allows us to turn it on very soon. I feel like we’re living in the future! @Tesla@elonmusk pic.twitter.com/PoAm14peFB

— Toblerone (@Toblerhaus) March 24, 2018

In 2017, according to California permit records there were 113,000 new single- multi- family homes built. Does that mean we might have 113,000 new solar power systems built every year because of this legislation?

First off, that amount isn’t a so far away from current volumes. GTM Research Solar Analyst Allison Mond estimates that in 2017 California installed 857 MW of residential capacity, representing nearly 127,000 individual installations.

However, the number of new systems won’t be that high 113,000 just yet. Homes can contract with a community solar project to meet the requirement, some of multi-unit structures won’t have the same solar power requirements.

However, the number of new residential units built in California has been growing every year since the recession, still hasn’t reached the same level as in 2004. If upwards of 100,000 new homes are built in 2020, they all have a few kilowatts of solar, it won’t sell out a gigafactory.

The rules suggest that there is a strong association between air conditioned square footage wattage of solar power required. If it’s one to one, then solar system requirements will probably be in the 1,500-4,000 watt foot requirements for the large majority of houses – with the average national square footage of a house being around 2,700.

Therefore 100,000 new homes with 2.7kW of solar power each will generate a marketplace for “integrated at time of design” solar power of 270 MW. That won’t fill out Tesla’s Buffalo capacity of 1 GW or more, but it might be enough to help RGS Energy bring back Dow’s Powerhouse Solar Shingle folks like Hanergy trying to deliver their thin film curved shingle below.

It’s too soon to tell exactly what this new law will do to the solar market. In the short term, there may be an evolution in how solar power is installed. Might Tesla stock have just gotten a new reason to live?

pv magazine believes over the next few decades, the retrofit market will slowly disappear when all buildings have solar power. as California goes, so goes the nation.

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