CESI (Centro Elettrotecnico Sperimentale Italiano “Giacinto Motta” S.p.A.) is a global technical consulting, engineering, testing and certification group focused on the electric power sector and related infrastructure. Headquartered in Milan and founded in 1956, it operates through three main business lines: KEMA Labs for independent testing, inspection and certification of power components and systems; CESI Consulting for advisory, engineering and digital services across energy, water, infrastructure and environmental projects; and CESI Space, which designs and manufactures high‑efficiency multi‑junction solar cells for space applications. The group also provides civil and environmental engineering via its Ismes unit and offers services across transmission and distribution, renewables and green hydrogen, storage and e‑mobility, conventional generation, industrial plants and oil and gas infrastructure.
CESI runs a large network of laboratories and offices in Europe, the Middle East, the Americas and Asia, executing projects in over 70 countries with a global network of more than 2,000 professionals. Through KEMA Labs it operates high‑voltage, high‑power, EMC, smart metering and advanced power grid facilities, including what it describes as the world’s largest high‑power laboratory and the Flex Power Grid Laboratory for smart‑grid component testing. Clients include major utilities, TSOs, DSOs, power generation companies, system integrators, global electromechanical and electronic manufacturers, major space agencies, infrastructure developers, governments, regulators and international financial institutions.
CESI Space develops III‑V triple‑junction GaAs solar cells qualified for LEO and GEO missions, with a long flight heritage powering dozens of satellites and interplanetary missions. Strategically, CESI positions its consulting, testing and space activities around supporting energy transition, grid modernization and sustainable infrastructure, underpinned by adherence to the UN Global Compact, a formal sustainability policy and a group Code of Ethics first adopted in 2002 and subsequently updated.
