DNV GL launches new online tool to minimize irradiance data variance for PV power plant projects

Facebook
Twitter
LinkedIn
Reddit
Email
Solar Resource Compass allows the user to easily compare irradiance data from multiple sources for any U.S. project location.

DNV GL has launched a new online tool, Solar Resource Compass , that aggregates solar irradiance from many leading data providers to help users make more informed decisions about the data available and the variance between data sources to help users avoid selecting the wrong data for a solar project. It also estimates loss factors for dust soiling and snow accumulation based on historical precipitation for any project site in the United States.

Problem

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

As the margins on solar projects are slim, developers, investors, and owners require the most accurate tools to select sites and model energy calculations to ensure that their projects will provide the expected financial returns. Using irradiance data from multiple sources could reduce the risk of selecting solar irradiance data that may overvalue or undervalue a solar project.

Solution

Solar Resource Compass allows the user to easily compare irradiance data from multiple sources for any U.S. project location. The results of the analysis include a statistical comparison of available resources presented in a user-friendly chart, table and map. Solar Resource Compass also leverages analytics developed by DNV GL over the last 20 years to identify outliers to help users avoid selecting the wrong data for a solar project. It also estimates loss factors for dust soiling and snow accumulation based on historical precipitation for any project site in the United States. Solar Resource Compass can be used to source irradiance data at any stage of the project development process – during the feasibility stage to more efficiently screen candidate site locations as well as to support project financing assumptions for investment or acquisition.

Applications

PV power plants in the US.

Platform

Solar Resource Compass also incorporates DNV GL’s analytics (which are based on both industry standard models and proprietary analysis) to calculate the monthly loss factors attributable to dust and snow accumulation. Irradiance uncertainty and soiling accumulation are the two most important site factors needed to properly model the energy potential of a solar energy project. By default, Solar Resource Compass will access data from NREL (including the PSM satellite model and the nearest TM2/TM3 locations), Meteonorm and DNV GL's SunSpot irradiance model. This is all presented in convenient table, chart and map that shows your project location and the available data sources.

Availability

February 2020, onwards.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

August 17, 2026
CIP has closed at around US$3 billion to develop large-scale energy infrastructure projects across emerging markets.
August 17, 2026
Saatvik Solar has signed an MoU with the Government of Odisha for a 3.6GW solar cell manufacturing facility at Gopalpur in Ganjam district.
August 14, 2026
IPP Recurrent Energy has secured US$695 million in financing to support a 330MW solar PV project in California.
August 14, 2026
Mainstream Renewable Power’s 50MW C&I Ilikwa PV Facility in South Africa’s Free State province has reached commercial operation.
August 14, 2026
Foreign Entity of Concern rules create a multitude of new risks for US solar developers, some less visible than others. Intertek CEA’s Jordan Wilson explores the key steps towards minimising FEOC exposure in PV module purchase agreements.
August 12, 2026
Websol has begun a brownfield upgrade of a 600MW mono PERC cell manufacturing line to TOPCon, increasing its total cell capacity to 1.35GW.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye