Calculating The Solar Potential Of A Roof

Martin Brinkmann
Sep 4, 2008
Updated • Dec 13, 2012
Internet
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Solar Roof is a Google Maps mashup that can calculate the solar potential of a roof. If you ever wanted to find out if it would make sense to put solar collectors on your roof you can do so now by using the free service. This can be quite an efficient first analysis of the potential of the roof. It is probably nowhere near perfect and an expert who would come to your house to measure the solar potential would be definitely more accurate in his calculations but it should give a first overview of the potential.

Using Solar Roof is easy. The user begins by entering an address which Google Maps will then show on the map. He then begins to place array segments around the roof of the house that mark the house on the map, the part that should be analyzed should appear in yellow afterwards.

The script begins to calculate various parameters like the potential, the power per sq. ft., the area in sq. ft and total peak power as soon as the first array marker has been placed on the roof. Once all markers have been placed it is important to click the first marker again to signal that the roof has been completely marked.

After that the orientation marker has to be placed on the map. The orientation marker determines the direction that the roof slopes. Lastly the roof tilt angle has to be selected.

A click on the performance tab will load a monthly solar performance graph which will show the monthly output level in kilowatt hours. The calculations take region characteristics like weather cycles and cloud cover into account.

Solar Roof will also provide a financial analysis in the third tab. Users who enter their monthly electric bill and utility company will see how a solar roof would affect those bills. In the end it displays a chart that shows the break even date and the net costs if solar panels would be added to the roof.

Update: The Solar Roof website is no longer accessible on the Internet. Visitors from the United States can use the calculator at the Solar Estimate website instead.

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Comments

  1. ilev said on August 4, 2012 at 7:53 pm
    Reply

    Doesn’t Windows 8 know that www. or http:// are passe ?

    1. Martin Brinkmann said on August 4, 2012 at 7:57 pm
      Reply

      Well it is a bit difficulty to distinguish between name.com domains and files for instance.

    2. Leonidas Burton said on September 4, 2023 at 4:51 am
      Reply

      I know a service made by google that is similar to Google bookmarks.
      http://www.google.com/saved

  2. VioletMoon said on August 16, 2023 at 5:26 pm
    Reply

    @Ashwin–Thankful you delighted my comment; who knows how many “gamers” would have disagreed!

  3. Karl said on August 17, 2023 at 10:36 pm
    Reply

    @Martin

    The comments section under this very article (3 comments) is identical to the comments section found under the following article:
    https://www.ghacks.net/2023/08/15/netflix-is-testing-game-streaming-on-tvs-and-computers/

    Not sure what the issue is, but have seen this issue under some other articles recently but did not report it back then.

  4. Anonymous said on August 25, 2023 at 11:44 am
    Reply

    Omg a badge!!!
    Some tangible reward lmao.

    It sucks that redditors are going to love the fuck out of it too.

  5. Scroogled said on August 25, 2023 at 10:57 pm
    Reply

    With the cloud, there is no such thing as unlimited storage or privacy. Stop relying on these tech scums. Purchase your own hardware and develop your own solutions.

    1. lollmaoeven said on August 27, 2023 at 6:24 am
      Reply

      This is a certified reddit cringe moment. Hilarious how the article’s author tries to dress it up like it’s anything more than a png for doing the reddit corporation’s moderation work for free (or for bribes from companies and political groups)

  6. El Duderino said on August 25, 2023 at 11:14 pm
    Reply

    Almost al unlmited services have a real limit.

    And this comment is written on the dropbox article from August 25, 2023.

  7. John G. said on August 26, 2023 at 1:29 am
    Reply

    First comment > @ilev said on August 4, 2012 at 7:53 pm

    For the God’s sake, fix the comments soon please! :[

  8. Kalmly said on August 26, 2023 at 4:42 pm
    Reply

    Yes. Please. Fix the comments.

  9. Kim Schmidt said on September 3, 2023 at 3:42 pm
    Reply

    With Google Chrome, it’s only been 1,500 for some time now.

    Anyone who wants to force me in such a way into buying something that I can get elsewhere for free will certainly never see a single dime from my side. I don’t even know how stupid their marketing department is to impose these limits on users instead of offering a valuable product to the paying faction. But they don’t. Even if you pay, you get something that is also available for free elsewhere.

    The algorithm has also become less and less savvy in terms of e.g. English/German translations. It used to be that the bot could sort of sense what you were trying to say and put it into different colloquialisms, which was even fun because it was like, “I know what you’re trying to say here, how about…” Now it’s in parts too stupid to translate the simplest sentences correctly, and the suggestions it makes are at times as moronic as those made by Google Translations.

    If this is a deep-learning AI that learns from users’ translations and the phrases they choose most often – which, by the way, is a valuable, moneys worthwhile contribution of every free user to this project: They invest their time and texts, thereby providing the necessary data for the AI to do the thing as nicely as they brag about it in the first place – alas, the more unprofessional users discovered the translator, the worse the language of this deep-learning bot has become, the greater the aggregate of linguistically illiterate users has become, and the worse the language of this deep-learning bot has become, as it now learns the drivel of every Tom, Dick and Harry out there, which is why I now get their Mickey Mouse language as suggestions: the inane language of people who can barely spell the alphabet, it seems.

    And as a thank you for our time and effort in helping them and their AI learn, they’ve lowered the limit from what was once 5,000 to now 1,500…? A big “fuck off” from here for that! Not a brass farthing from me for this attitude and behaviour, not in a hundred years.

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