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The August 21st solar eclipse: How and where it’ll impact solar production
On August 21, 2017, the U.S. will experience a solar eclipse for the first time since May 2012. The eclipse will cause an obscuration of the sun’s light, resulting in a reduction of the energy from irradiance that will hit the Earth’s surface. As the eclipse crosses...
Adapting utility processes to the reality of distributed PV
Utility processes and systems impacted by distributed PV In previous blog posts, we’ve looked at how the growth of distributed PV can impact grid operation at the system level. These blogs addressed how distributed PV can lead to the often referenced “duck curve,” and...
MN Solar Pathways: Illuminating pathways to 10% solar
On March 30, 2017, the Minnesota Department of Commerce along with its core team, kicked off its Department of Energy-funded MN Solar Pathways project aimed at finding the least-risk, best-value solutions for MN to achieve its solar energy goals. Clean Power Research...
What is the value of accurate solar forecasting for utility-scale PV plants?
The importance and source of solar forecasting With an increasing number of installed utility-scale PV plants and a growing need for predictable energy generation, the solar industry has started paying attention to solar forecasting. The reasons behind this are: Solar...
SolarAnywhere detects calibration error in nation’s most trusted ground site
SolarAnywhere is a reliable relative source of long-term solar resource data, precise enough to identify calibration issues in one of the US most trusted irradiance ground-truth data sets
How to reduce demand charges using solar forecasts
The challenge is well-known by commercial building owners and PV project developers: on site solar PV generation offers excellent energy savings to commercial customers, but can result in unreliable demand charge reduction benefits. Through a recent DOE funded...
The Future of the NREL Solar Prospector and Public Solar Data
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
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 financing. In...
Quantifying day-ahead solar energy forecast uncertainty
Solar resource variability is an unavoidable natural characteristic that impacts solar power forecasting. However, its impact on forecast uncertainty can be reduced by providing information on predictive uncertainty, along with deterministic forecast values. Having...