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Cooperative Agreement


Grant Description
Advanced development and testing of the Sunring heliostat.
Place of Performance
Broomfield, Colorado 80020-3425 United States
Geographic Scope
Single Zip Code
Analysis Notes
Amendment Since initial award the End Date has been extended from 03/26/23 to 08/27/24 and the total obligations have increased 575% from $200,000 to $1,350,000.
Solar Dynamics was awarded Cooperative Agreement DESC0022690 worth $1,350,000 from the Office of Science in June 2022 with work to be completed primarily in Broomfield Colorado United States. The grant has a duration of 2 years 2 months and was awarded through assistance program 81.049 Office of Science Financial Assistance Program. The Cooperative Agreement was awarded through grant opportunity FY 2022 SBIR/STTR Phase I Release 2.

SBIR Details

Research Type
SBIR Phase I
Advanced Development and Testing of the SunRing Heliostat
The Department of Energy’s Solar Energy Technology Office has set a 2030 cost target of 5 ¢/kWh for Concentrated Solar Power (CSP) plants. The solar field represents the largest cost in a CSP tower plant (30-40% of total installed cost) with commercial heliostats having installed costs of approximately $140/m2. Solar Dynamics (SD) proposes to develop and test an advanced version of our SunRing™ heliostat that reduces its total installed and proves its bankability for commercial installations. The advanced SunRing heliostat will have an installed cost 40% lower than current commercial heliostats. Phase 1 of the project focuses on developing cost saving advances in the SunRing’s novel azimuth drive moving from a conceptual to a final design supported by physical component testing. Extended outdoor testing of the baseline SunRing will also occur providing additional experience with the overall azimuth drive design approach. Phase 1 will be followed by commercialization steps in Phase 2 where the SunRing heliostat is transitioned from a Technology Readiness Level of 5 to 7. This is accomplished with 1-year of outdoor performance testing by a USA National Laboratory. Additionally, lifetime performance testing will occur on the SunRing’s drives. The focus of Phase 2 is to de-risk the technology and provide comfort in the SunRing’s ability to perform in commercial solar projects. This is critical to gain the investment needed to deploy the SunRing at commercial scale. Our team is well suited to propose this project. SD has built and deployed the baseline SunRing heliostat. In addition, SD personnel have led development, design, and operations of some of the largest CSP power plants in the world.
Topic Code
Solicitation Number


Last Modified 9/18/23

Period of Performance
Start Date
End Date
76.0% Complete

Funding Split
Federal Obligation
Non-Federal Obligation
Total Obligated
100.0% Federal Funding
0.0% Non-Federal Funding

Activity Timeline

Interactive chart of timeline of amendments to DESC0022690

Transaction History

Modifications to DESC0022690

Additional Detail

SAI Number
Award ID URI
Awardee Classifications
Small Business
Awarding Office
Funding Office
892401 SCIENCE
Awardee UEI
Awardee CAGE
Performance District
Michael Bennet
John Hickenlooper

Budget Funding

Federal Account Budget Subfunction Object Class Total Percentage
Science, Energy Programs, Energy (089-0222) General science and basic research Grants, subsidies, and contributions (41.0) $1,350,000 100%
Modified: 9/18/23