NREL is a national laboratory of the U.S. Department of Energy

Office of Energy Efficiency & Renewable Energy

Operated by the Alliance for Sustainable Energy, LLC.

This report is available at no cost from the National Renewable Energy

Laboratory (NREL) at www.nrel.gov/publications.

Contract No. DE-AC36-08GO28308

Radiometer Evaluation –

Equipment Only

Cooperative Research and Development 

Final Report

CRADA Number: CRD-10-00382

NREL Technical Contact: Stephen Wilcox

CRADA Report

NREL/TP-7A10-57654

October 2013
NOTICE

This report was prepared as an account of work sponsored by an agency of the United States government. 

Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, 

express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of 

any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately 

owned rights. Reference herein to any specific commercial product, process, or service by trade name, 

trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, 

or favoring by the United States government or any agency thereof. The views and opinions of authors 

expressed herein do not necessarily state or reflect those of the United States government or any agency thereof.

This report is available at no cost from the National Renewable Energy Laboratory (NREL) 

at www.nrel.gov/publications.

Available electronically at http://www.osti.gov/bridge

Available for a processing fee to U.S. Department of Energy

and its contractors, in paper, from:

U.S. Department of Energy

Office of Scientific and Technical Information

P.O. Box 62

Oak Ridge, TN 37831-0062

phone: 865.576.8401

fax: 865.576.5728

email: mailto:reports@adonis.osti.gov

Available for sale to the public, in paper, from:

U.S. Department of Commerce

National Technical Information Service

5285 Port Royal Road

Springfield, VA 22161

phone: 800.553.6847

fax: 703.605.6900

email: orders@ntis.fedworld.gov

online ordering: http://www.ntis.gov/help/ordermethods.aspx

Cover Photos: (left to right) photo by Pat Corkery, NREL 16416, photo from SunEdison, NREL 17423, photo by Pat Corkery, NREL 

16560, photo by Dennis Schroeder, NREL 17613, photo by Dean Armstrong, NREL 17436, photo by Pat Corkery, NREL 17721.

Printed on paper containing at least 50% wastepaper, including 10% post consumer waste.
1

This report is available at no cost from the 

National Renewable Energy Laboratory (NREL) 

at www.nrel.gov/publications.

Cooperative Research and Development Final Report

In accordance with Requirements set forth in Article XI.A(3) of the CRADA document, this document is 

the final CRADA report, including a list of Subject Inventions, to be forwarded to the Office of Science 

and Technical Information as part of the commitment to the public to demonstrate results of federally 

funded research.

CRADA Number: CRD-10-00382

CRADA Title: Radiometer Evaluation - Equipment Only

Parties to the Agreement: Yankee Environmental Systems, Inc.

Joint Work Statement Funding Table showing DOE Commitment:

Estimated Costs NREL Shared Resources

Year 1 $ 7,000.00

Year 2 $ 00.00

Year 3 $ 00.00

TOTALS $ 7,000.00

Abstract of CRADA Work:

This project will place instrumentation at the NREL Solar Radiation Research Laboratory (SRRL) in 

cooperation with Yankee Environmental Systems (Participant). One or more Participant instruments will 

be deployed for the purpose of evaluation under controlled conditions. The scope of the project will be a 

year-long comparison of the instruments vs. other NREL baseline instruments with a well-characterized 

history.

Summary of Research Results:

This project placed solar measurement instrumentation at NREL’s SRRL in cooperation with Yankee 

Environmental Systems. Three Participant instruments were deployed for the purpose of evaluating 

instrument performance under controlled conditions common with other similar instruments that were 

also under evaluation. The scope of the project was a yearlong comparison of the instruments vs. other 

NREL baseline instruments with a well-characterized history. The final evaluation will be a written 

report quantifying the differences among instruments in the study.

Subject Inventions Listing:

Not applicable.

Report Date: 23-Aug-2013 Responsible Technical Contact at Alliance/NREL: Stephen Wilcox

This document contains NO confidential, protectable, or proprietary information.