EKO Instruments

EKO Instruments is a global leader in precision measurement solutions for the solar energy sector, with nearly a century of experience since its founding in Tokyo in 1927. The company specializes in designing and manufacturing high-quality scientific instruments such as pyranometers, pyrheliometers, albedometers, spectroradiometers, and all-sky imagers—serving applications ranging from photovoltaic research to large-scale power plant performance verification.
Renowned for innovation—such as launching the world’s first IEC 61724-1 Class A compliant MS-80 Pyranometer—EKO has set industry benchmarks by achieving ISO 17025 accreditation at its Tokyo calibration laboratory and by operating its own PV plants near Tokyo with a combined annual generation capacity approaching 2.8 GWh. These facilities provide unique insights into real-world challenges faced by customers.
With offices across Japan (HQ), USA (San Jose), Europe (The Hague), India, and China, EKO supports clients worldwide through continuous product development focused on accuracy, reliability, ease-of-use—and robust support throughout the entire lifecycle of photovoltaic projects.
Their products are widely used not only by commercial renewable energy operators but also by leading academic teams such as the University of Michigan Solar Car Team through initiatives like EKO | EMPOWER. Their commitment to quality ensures that environmental researchers and renewable energy professionals can rely on precise measurements critical to advancing sustainable technologies.