irradiance data Archives

What U.S. PV plant owners have seen in 2018/2019 is real: sunshine has been scarce

Patrick Keelin | Jul 30, 2019

What it means to PV plant owners and developers For many solar PV plant owners in the U.S., solar energy production in the last year or two has fallen well below expectations. We’ve heard this again and again recently. Maybe you’ve heard the same thing. What’s causing...

The Future of the NREL Solar Prospector and Public Solar Data

Skip Dise | Oct 3, 2016

Solar Prospector Sunsetting As many of you have heard, the National Renewable Energy Laboratory (NREL) will be sunsetting the Solar Prospector tool. The Solar Prospector tool was last updated in 2012 by NREL, and its purpose was to provide mapping and data analysis in...

Observational MET programs reduce uncertainty

Ann Gaglioti | Sep 14, 2016

This week, we’re pleased to present a post from GroundWork® Renewables’ CEO Ann Gaglioti. Measuring irradiance data in the field reduces the uncertainty of the energy production assessment and results in a measurable return on investment during project...

How to validate PV fleet forecast accuracy when you cannot directly measure it

Richard Perez | Jun 16, 2016

The capacity of behind-the-meter PV systems is growing steadily. Figure 1 illustrates that there is over 5 GW of PV in California alone. The number is continuing to increase. The result is that behind-the-meter PV fleet forecasts are becoming increasingly important...

NREL turns to SolarAnywhere for NSRDB

Skip Dise | Nov 28, 2012

Yesterday, the National Renewable Energy Laboratory (NREL) announced the newest release of the National Solar Radiation Database (NSRDB). The database is widely used by solar system designers, building architects and engineers, renewable energy analysts and others to...

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