Solar Power World

  • Home
  • Top Solar Contractors
  • Articles
    • Most Recent Posts
    • News
      • Latest News Items
      • Solar tariffs
    • Featured
      • Latest Feature Stories
      • Contractor’s Corner
      • Trends in Solar
      • The Solar Explorer
  • Policy
    • Monthly Snapshots
  • Markets
    • Residential
    • Commercial
    • Community Solar
    • Utility
  • Products
    • 2021 Top Products
    • Batteries and Storage
    • Inverters
      • Global Manufacturing Locations
    • Racking and Mounting
    • Software
    • Solar Panels
      • U.S. solar panel manufacturers
      • Global Manufacturing Locations
  • Subscribe
  • Resources
    • About SPW
    • Digital Issues
    • Event Coverage
    • Podcasts
    • Product Manufacturing Locations
      • Global Inverter Manufacturing Locations
      • Global Solar Panel Manufacturing Locations
      • U.S. solar panel manufacturers
    • Solar Classrooms
    • Suppliers
    • Videos
    • Webinars / Digital Events
    • Whitepapers
  • Leadership
    • Vote for the 2022 Leaders!
    • 2021 Winners
    • 2020 Winners
    • 2019 Winners
    • 2018 Winners

OpenSolar receives third-party validation of design tool’s accuracy

By Kelsey Misbrener | November 3, 2021

Share

OpenSolar has announced the findings of independent, third-party assessments that validate the accuracy of its solar design tool. By using OpenSolar’s design tool, solar installers will have full confidence they are providing customers with the most accurate PV designs that fit their solar energy needs. Combined with other key features of OpenSolar’s free-to-use platform, including access to a range of state-of-the-art hardware, a portfolio of competitive solar financing options, and on-demand customized permitting proposals, the company enables solar installers to convert more prospects into booked sales while saving time and eliminating the costly licensing fees attached to other solar design and sales platforms.

As part of OpenSolar’s validation process, the company engaged with PV Evolution Labs (PVEL) and the United States National Renewable Energy Laboratory (NREL) to provide independent, third-party assessments of the accuracy of its design tool. The assessments include the following processes and findings.

Shading

OpenSolar asked the United States National Renewable Energy Laboratory (NREL), which has been benchmarking shading accuracy of solar design tools for years, to assess the company’s 3D design tool. NREL compared the shading estimates provided by OpenSolar’s remote 3D tool with assessments made on the same roof using a SunEye, the world’s leading hand-held electronic shade measurement tool for on-site assessment.

  • OpenSolar’s assessment of Sun Access Values was accurate to within +/- 3%
  • The current U.S. market leader was only found to be accurate to within +/- 5%

Site Assessment

OpenSolar engaged PVEL to assess the accuracy of its system-generated site models. PVEL took measurements both in the field and in OpenSolar across a wide range of differently shaped and sized roofs.

  • OpenSolar’s assessment of scale was accurate to within 1 ⅓ feet 100% of the time (no other tool provides as narrow a tolerance)
  • OpenSolar’s assessment of pitch was accurate to within 4° over 97% of the time (no other tool provides as narrow a tolerance OR such high compliance)

Energy Modeling

OpenSolar’s energy modeling (the conversion of key inputs, including pitch azimuth and shading into the key output: production) is based on NREL’s most advanced System Advisor Model (SAM). The company engaged with PVEL to validate the integrity of OpenSolar’s implementation of SAM, when comparing it to industry standard energy modeling tools like PVsyst or standalone implementations of NREL’s SAM. PVEL found:

  • OpenSolar’s energy modeling is consistent with standard engineering practices
  • OpenSolar’s production figures are within 0.0%-0.2% of standalone SAM estimates
  • OpenSolar’s production figures are within 0.1%-1.9% of PVsyst estimates

To view and download the full reports visit opensolar.com/accuracy.

“Our assessment of OpenSolar’s software confirms that its implementation of the SAM energy production model engine is accurate and in line with industry standards for residential and commercial projects and its 3D ray tracing calculations of beam shading are as good or better than other available products,” said Ryan Desharnais, chief technical officer of PV Evolution Labs (PVEL). “We also sent measurement teams to a wide range of residential rooftops and verified the accuracy of OpenSolar’s physical site assessments. When taken together, these findings demonstrate that OpenSolar can produce high-quality energy generation estimates for solar projects.”

News item from OpenSolar

About The Author

Kelsey Misbrener

Kelsey is managing editor of Solar Power World and host of the Contractor's Corner podcast.

Tell Us What You Think! Cancel reply

Related Articles Read More >

Vermont gravel now pit home to 1.65-MW solar project
Illinois hog farm commissions 3-MW solar project
Climate First Bank launches solar financing platform to Florida residents with no dealer fees
Enphase IQ8 microinverter system now UL 1741-certified

SPW Digital Editions

Solar Power World Digital EditionBrowse the current issue and archived issues of Solar Power World in an easy-to-use, high-quality format. Bookmark, share and interact with the leading solar construction magazine today.

Contractor's Corner Podcast

May 23, 2022
Contractor’s Corner: Solar apprenticeships are key to meeting renewable energy goals
See More >

Solar Policy Snapshot

Solar policy differs across state lines and regions. Click to see our monthly roundup of recent legislation and research throughout the country.

Read More >

Solar Power World
  • Top Solar Contractors
  • Solar Articles
  • Windpower Engineering & Development
  • Battery Power Tips
  • Top Products
  • Leadership
  • About/Contact Us
  • Subscribe
  • Advertising
  • WTWH Media

Copyright © 2022 WTWH Media, LLC. All Rights Reserved. Site Map | Privacy Policy | RSS

Search Solar Power World

  • Home
  • Top Solar Contractors
  • Articles
    • Most Recent Posts
    • News
      • Latest News Items
      • Solar tariffs
    • Featured
      • Latest Feature Stories
      • Contractor’s Corner
      • Trends in Solar
      • The Solar Explorer
  • Policy
    • Monthly Snapshots
  • Markets
    • Residential
    • Commercial
    • Community Solar
    • Utility
  • Products
    • 2021 Top Products
    • Batteries and Storage
    • Inverters
      • Global Manufacturing Locations
    • Racking and Mounting
    • Software
    • Solar Panels
      • U.S. solar panel manufacturers
      • Global Manufacturing Locations
  • Subscribe
  • Resources
    • About SPW
    • Digital Issues
    • Event Coverage
    • Podcasts
    • Product Manufacturing Locations
      • Global Inverter Manufacturing Locations
      • Global Solar Panel Manufacturing Locations
      • U.S. solar panel manufacturers
    • Solar Classrooms
    • Suppliers
    • Videos
    • Webinars / Digital Events
    • Whitepapers
  • Leadership
    • Vote for the 2022 Leaders!
    • 2021 Winners
    • 2020 Winners
    • 2019 Winners
    • 2018 Winners