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

February 5, 2020
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.

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2028 and beyond.
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 third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023, 2024 and 2025 were a sell out success and 2026 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.

Read Next

April 23, 2026
UAE state-owned renewables developer Masdar has established a joint venture (JV) with the national power utility of Montenegro to develop “large-scale” clean energy projects in the country.
April 23, 2026
US-based forecasting company Amperon has launched a new AI-based short-term probabilistic forecasting tool for solar and wind generation assets.
April 23, 2026
Evren has secured US$600 million in financing to develop a 1GW hybrid firm and dispatchable renewable energy (FDRE) portfolio across Andhra Pradesh and Rajasthan.
April 23, 2026
The 31MW Mulwala Solar Farm in New South Wales has been registered in the Australian Energy Market Operator's Market Management System (MMS).
April 22, 2026
BrightNight has acquired a 6GW portfolio of projects previously held under its joint venture with Canadian asset manager Cordelio Power.
April 22, 2026
A federal judge in Massachusetts has temporarily halted the Trump administration's restriction of solar and wind projects on US federal land.

Upcoming Events

Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain