Research

Impact of PV/Wind Forecast Accuracy and National Transmission Grid Reinforcement on the Italian Electric System

Research | November 2022

The high share of PV energy requires greater system flexibility to address the increased demand/supply imbalance...

IRENA SolarCity

Research + Solar Prediction | November 2022

This project combines ultra-high-resolution (0.5 meter or 1 meter) Digital Elevation Model (DEM) data and 3D vector...

IEA Task 16-3.5 Report: Firm Power Generation

Research | November 2022

Grid-connected solar power generation, either dispersed or centralized, has developed and grown at the margin of a...

Firm PV Power generation for Switzerland

Research | June 2022

We investigate whether photovoltaics (PV) can effectively and economically contribute to a massively renewable energy...

Firm PV Power Generation in Switzerland

Research | June 2022

We investigate whether PV can effectively and economically contribute to a massively renewable energy (RE) power...

Importance of Input Data and Uncertainty Associated with Tuning Satellite to Ground Solar Irradiation

Research | June 2016

Although the uncertainty of satellite data such as SolarAnywhere® Data has been shown to be low, it can be challenging...

Solar Energy Forecast Validation for Extended Areas & Economic Impact of Forecast Accuracy

Research | June 2016

This article evaluates the accuracy of solar forecast models, including SolarAnywhere®, as a function of geographic...

Integration of Behind-the-Meter PV Fleet Forecasts into Utility Grid System Operations

Research | February 2016

This paper describes a study, funded by the U.S. Department of Energy, to evaluate new, state-of-the-art solar...

Reducing Solar Project Uncertainty with an Optimized Resource Assessment Tuning Methodology

Research | June 2014

This paper describes procedures suitable for the optimal combination of ground-based and satellite-based irradiance...

CSI RD&D Solicitation 3 Final Webinar: Integrating PV into Utility Planning and Operation Tools

Research + Webinar | April 2014

Clean Power Research received a California Solar Initiative (CSI) Research, Development, Demonstration and Deployment...

Experience in California with Behind-the-Meter PV Forecasts

Presentation + Research | February 2014

SolarAnywhere® FleetView® is generating behind-the-meter PV forecasts in California, enabling utilities and ISOs to...

CEC PIER Project: Demonstration and Validation of PV Output Variability Modeling Approach

Research | July 2013

The California Energy Commission’s Public Interest Energy Research (CEC PIER) program awarded Clean Power Research a...

Operational Improvements in the Performance of the SUNY Satellite-to-Solar Irradiance Model Using Satellite Infrared Channels

Research | June 2013

This paper summarizes operational improvements to the existing SUNY satellite-to-solar irradiance model used to...

Behind-the-Meter PV Fleet Forecasting: Results for 130,000 PV Systems in California

Presentation + Research | April 2013

Lean how SolarAnywhere® FleetView® is being integrated into CAISO planning and operations tools to provide power...

Behind-the-Meter PV Fleet Forecasting

Research + Solar Prediction | March 2013

Grid-connected PV in the U.S. has grown substantially over the past several years and grid operators are increasingly...

Integrating PV into Utility Planning and Operation Tools

Presentation + Research | February 2013

Clean Power Research received a California Solar Initiative (CSI) Research, Development, Demonstration and Deployment...

CSI RD&D Solicitation 1 Final Webinar: Advanced Modeling and Verification for High Penetration PV

Research | April 2012

In April 2010, Clean Power Research received a California Solar Initiative (CSI) Research, Development, Demonstration...

Off-Shore Wind and Grid-Connected PV: High Penetration Peak Shaving for New York City

Research | March 2012

This article presents an experimental evaluation of the combined effective capacity of off-shore wind and...

Reporting of Irradiance Model Relative Errors

Research | March 2012

Metrics used in assessing irradiance model accuracy such as Root Mean Square Error (RMSE) and Mean Absolute Error...

Evaluating Irradiance Accuracy Using California ISO Data: Lessons Learned

Research + Solar Prediction | February 2012

This presentation provides the results of a study evaluating the short, medium and long-term accuracy of irradiance...

Determining Storage Reserves for Regulating Solar Variability

Research | November 2011

This paper describes the initial validation of a method of quantifying PV variability by using satellite-derived solar...

Modeling PV Fleet Output Variability

Research + Solar Prediction | May 2011

This paper introduces a novel approach to estimating the maximum short‐term output variability that an arbitrary fleet...

Valuing a Portfolio of PV Investments

Research + Solar Prediction | October 2010

This presentation describes the importance of PV output variability as a factor in calculating the value of a fleet of...

Validation of Short & Medium Term Operational Solar Radiation Forecasts in the U.S.

Research + Solar Prediction | August 2010

This paper presents a validation of the short- and medium-term global irradiance forecasts that are produced as part...

Validation of PV Performance Models Using Satellite-based Irradiance Measurements: A Case Study

Research | May 2010

This paper presents a study of how PV performance model results are affected when satellite-based weather data is used...

Weather Adjusted Performance Guarantees

Research | May 2010

This paper describes how to generate more accurate Weather-Adjusted Performance Guarantees for PV systems using a...

Blog

Jan 10, 2023

Solar Generation Index 2022: Continued P50 underperformance of 7-13% highlights need for accurate data and greater transparency

Despite continued supply chain disruptions in 2022, the U.S. solar industry’s outlook appears strong with the passage of the Inflation Reduction Act (IRA). SEIA and Wood Mackenzie have increased their U.S. solar deployment forecast, expecting the industry to triple...

Implicit storage continues to gain support to enable renewables to deliver firm power, cost effectively

With solar and wind providing a greater percentage of electricity, managing the intrinsic intermittency of variable resources is becoming increasingly important. How do we overcome this intermittency? Answering this question has been the focus of an international...

2022 Solar Risk Assessment Report: Expert insights into key risk factors impacting solar assets globally

Although 2021 marked the third year in a row that solar represented the largest share of new generation capacity in the U.S., continued supply chain constraints, tariff investigations and inflation all pose uncertainty for 2022 project development pipelines. In this...

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