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Sun Number Makes Solar Simple for Property Owners in Denver Metro Area

Free Service from DOE-Funded Company Makes It Possible to Instantly Learn if a Property Can Benefit from Solar Energy with One Click


Sun Number is making it possible for Denver homeowners and commercial property owners to instantly learn how much they can benefit from rooftop solar using a free online tool that is available today. By entering a property’s address at the website, the property owner can immediately get an analysis of the amount of solar energy the building’s rooftop can generate and how much money that would save in utility costs.
This analysis provides people with information that was previously only available through a lengthy on-site analysis by a solar professional. Starting today, this free service is available for more than 800,000 properties in the Denver metro area, including suburbs such as Broomfield, Brighton, Westminster, Aurora, Lakewood, Highlands Ranch and others. The Sun Number analysis of the Denver metro area has determined that if solar panels covered all of the solar suitable square footage of Denver metro rooftops enough electricity would be generated to power the city of Denver and all of adjacent Jefferson County.
Developed with funding from the U.S. Department of Energy’s SunShot initiative, this tool is being launched in markets across the United States to support the DOE’s goals of educating the public about solar energy and making it easier for property owners to begin a dialogue with solar providers. The online tool provides a Sun Number Score between 1 and 100 for a property to help the owner easily understand its solar potential and how it compares to the regional average. The tool also provides an estimate of the dollar value of electricity that could be generated by a solar installation, and makes it possible to begin a dialogue with a solar provider if that is of interest.
For properties found to be unsuitable for solar, Sun Number has partnered with Colorado-based Clean Energy Collective (, a developer of centrally located community-owned solar facilities, to make solar available to anyone regardless of a property’s orientation to the sun or the structural integrity of a roof. 
“This tool makes it incredibly simple to find out how well-suited a home or commercial building is for rooftop solar. Just type in your address, and bingo: Up pops a customized analysis of the building that helps you decide if solar is right for you,” said David Herrmann, co-founder of Sun Number. “These aren’t just general facts about how an average building can use solar. It’s a detailed analysis of your building just like if you invited a solar company to send one of their employees up on your roof to do an in-person analysis. It’s an amazing advancement in how solar assessments are done, and it’s easy enough for anyone to do and understand.”
“Solar panels can be an impactful way to make homes and properties greener, especially here in Colorado where we get to enjoy so many sunny days each year. Now no one ever needs to wonder if solar is right for their building or mistakenly assume that solar probably wouldn’t save them any money,” said Julie Herman, Executive Director of the Colorado Green Building Guild. “Sun Number answers those questions immediately at their website or via a widget like the one we have placed on the Guild website. In the past, the process of doing a solar analysis for a building’s rooftop was often frustratingly slow for the property owner and expensive for the solar company who needed to send an employee on-site. Now it’s instantaneous and fun, which is exactly what makes this such a powerful tool for helping people make their homes and buildings greener.”
To get an analysis of the solar potential of a property in Denver, visit Solar companies in Colorado can also learn more about how this tool can significantly lower their costs, shorten the sales cycle and generate sale opportunities by visiting Sun Number’s website or contacting the company.
About Sun Number
Sun Number, LLC, is accelerating the adoption of rooftop solar energy across the United States by providing solar providers and property owners with instant assessments of the solar potential of homes and commercial buildings. With a single click, Sun Number provides an analysis of how solar-friendly a building is, using a methodology that factors in a range of data from sun exposure to regional climate to foliage. This produces a Sun Number Score that provides information solar companies can use to shorten the sales cycle and property owners can use to understand how much they can benefit from solar power. Sun Number, LLC, was founded in 2012 with a SunShot Initiative award from the U.S. Department of Energy that supports emerging companies broadening adoption of solar energy technology. For more information about Sun Number, visit



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