Google sunroof

Sunroof or sunroof it’s a new google project that will be able to calculate the amount of solar energy that the roof of your house receives in a year, taking an aerial image database and Google Maps with a 3D design of the roof, shadows of nearby structures or trees, a history of clouds and temperature models, and all of the sun’s positions during of the year, by creating your own personalized analysis.

The goal of google sunroof is to help you know how much solar energy you could use in your home, and why not, to suggest us a recommended installer or company for this installation.

With these data, Sunroof recommends the size of the installation that you must assemble in your home in order to be able to generate 100% of your electricity consumption thanks to solar energy. We can calculate the costs and know in a simple way whether it is profitable or not. This can be an ideal complement for the success of projects such as Tesla’s battery, Powerwall, capable of storing the solar energy that we generate in order to be autonomous 24 hours a day.

Sunroof Project

The project was launched for testing last year in Boston, San Francisco and Fresno. Given the success, it’s now available in all 50 U.S. states, in addition to the last 8 states that were just under a month short, the service has the potential to reach 43 million roofs. The next step is to expand the service outside of the United States. The first country to integrate this service is Germany, thanks to the agreement between Google and E.ON.

Some time ago we told you about B-Planner, an online application similar to google’s but with the advantage of including wind power. At the end, it generates a detailed report on the recommended installation for your home and the amount of energy you can generate. Very recommendable.

Renewable energy continues to be one of Google’s big investments lately.


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Now it also has a new app for data mining, which will allow solar estimation for entire communities, in addition to private homes, by taking advantage of Google Earth’s 3D geometry.

Some interesting data that can be extracted from this Google project are:

  • 79% of all roofs tested are technically viable for solar power generation, meaning the roofs have enough unshaded area for solar panels.
  • Over 90% of homes in Hawaii, Arizona, Nevada, and New Mexico are technically viable, while in states like Pennsylvania, Maine, and Minnesota, they are just over 60% feasibility.
  • Houston, Texas has the highest solar potential of any city in the United States, with an estimated solar production potential of 18,940 GWh per year. Los Angeles, Phoenix, San Antonio, and New York follow Houston as the 5 cities with the greatest solar potential – see the top 10 list in the graph below.
  • If the ten cities with the greatest solar rooftop potential reached their maximum production level, they would produce enough energy to power 8,000,000 homes in the United States.

Google will now also display buildings and houses where solar panels have already been installed, which it will identify with a red dot.

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