The US-based service provides greater accuracy, cost efficiency, and turnaround speed
SAN JOSE, Calif., Feb. 17, 2026 – EKO Instruments USA (EKO), a pioneering solar sensor manufacturer, announces today its US-based pyranometer calibration service launch. The service brings a new level of accuracy, cost effectiveness, and turnaround speed to pyranometer calibration for utility scale, commercial, and industrial solar applications. The service will support Supervisory Control and Data Acquisition (SCADA) companies, Operations and Maintenance (O&M) teams, and solar project developers, owners and operators. Correct calibration enables pyranometers to accurately fulfill their key role across the solar lifecycle, including planning stages, installation, and ongoing monitoring and maintenance.
EKO’s newly developed Indoor Calibration Facility (ICF-02) calibration system forms the linchpin of the service. The Indoor Calibration Facility is a turnkey, fully automated calibration system designed to perform highly accurate and repeatable indoor calibrations of ISO 9060 spectrally flat pyranometers in full compliance with ISO 9847:2023. The facility enables direct comparison of a test pyranometer against a reference pyranometer of the same model, ensuring traceability and consistency aligned with international calibration standards.
As the first solar sensor manufacturer in the world to obtain ISO/IEC 17025 accreditation at EKO’s headquarters in 2013, EKO continues to lead the solar sensor industry in calibration. Drawing from this experience, the new calibration service was developed to meet International Electrotechnical Commission (IEC) 61724-1:2021 calibration frequency standards.
“Amidst solar project deadlines that are tighter than ever, we’re happy to launch a faster, more cost-effective calibration service within the USA that minimizes stress for our customers while maximizing the accuracy of their solar sensors,” says Wayne Burnett, Chief Strategy Officer and Chief Technology Officer at EKO Instruments. “EKO’s long legacy of expertise in calibration and dedication to accuracy makes this possible.”
Conducted domestically, the US-based calibration service reduces the cost of sending solar sensors to offshore laboratories, preventing logistical delays that can arise from international supply chains. EKO’s service also accelerates calibration turnaround time compared with many alternative providers, helping customers return instruments to service more quickly. The service ensures industry-leading sensitivity value – the last checkpoint metric before the solar sensor is reinstalled in the field, where accuracy of calibration is difficult to assess.
Errors from poor calibration are often subtle and even undetectable by end users, but the cumulative effect of power loss can impact the productivity and profitability of larger sites. ISO 9847:2023 solar sensor calibration involves comparing the readings of a test solar sensor against a reference solar sensor under controlled conditions. Understanding measurement uncertainties is critical in the solar sensor calibration process, whether the calibration will be done indoors or outdoors. Periodic re-calibration of solar sensors is necessary to ensure that solar energy systems can be tested and rated consistently.
“ICF-02 was designed as a scalable tool for fully automatic calibrations, enabling users to operate the system easily while achieving highly consistent and repeatable results. As adoption grows, our vision is to expand a global calibration network in close collaboration with trusted partners who operate ICF-02 facilities,” explains Kees Hoogendijk, Managing Director, EKO Technology. “This approach ensures harmonized calibration practices worldwide. Decades of hands-on experience in solar radiation measurement and calibration form the foundation of this system. That expertise is embedded in the sophisticated automation, control software, and data handling of ICF-02, making reliable, traceable, and standards-compliant calibrations accessible without compromising on quality.”
For more information on EKO’s calibration service, visit https://eko-instruments.com/us/services/recalibration-service/
About EKO Instruments
Headquartered in Japan and maintaining a US office and distribution center in California, EKO Instruments has over 95 years of Japanese reliability & precision in solar energy sensors, environmental science, and material analysis. EKO-designed and built instruments are today deployed around the world, supporting environmental research and renewable energy projects through continuous innovation, industry-leading turn-key solutions, and an uncompromising commitment to quality.
In 2013, EKO Instruments became the first solar sensor manufacturer in the world to achieve ISO 17025 accreditation at the international testing and calibration laboratory in Tokyo, Japan; giving our partners and customers added confidence in the precision and reliability of measuring instruments and calibration methods.
For more information, please visit www.eko-instruments.com or www.linkedin.com/company/eko-instruments/
Contact
EKO Instruments USA
sales-usa@eko-instruments.com
1 408 977 7751
