ETDE

ETDE refers to two distinct but energy‑focused entities described in the available sources. Under the International Energy Agency (IEA) framework, the Energy Technology Data Exchange (ETDE) operated from 1987 until its formal end on 30 June 2014 as a multilateral mechanism for exchanging energy research and technology information. It functioned as an IEA Implementing Agreement governed by an executive committee of member‑country delegates and managed day to day by an operating agent. ETDE compiled what was described as the world’s largest collection of energy research, technology and development information in the ETDE World Energy Base (ETDEWEB) database. This bibliographic database held more than 4.5–5 million indexed records, with links to extensive full‑text content, and covered energy R&D, energy policy and planning, basic sciences, materials research, environmental impacts including climate change, conservation and efficiency, nuclear technologies, fossil fuels and a wide range of renewable energy technologies. Content came from member and partner countries and organizations such as the International Nuclear Information System. After the consortium ended, ETDEWEB remained temporarily accessible via WorldWideEnergy.org; non‑US content is now preserved and made available by the U.S. Department of Energy’s Office of Scientific and Technical Information. Separately, ETDE was also the name of a Bouygues Construction operating entity active in building, civil works, and operation and maintenance services. In 2003 it was one of eight major Bouygues Construction entities, and on 1 February 2013 ETDE and its subsidiaries were brought together under the new banner Bouygues Energies & Services. Within Equans France, Bouygues Energies & Services now focuses on supporting energy, industrial and digital transitions across connected and sustainable territories, buildings and industries, and mobility, including activities such as public lighting, transport infrastructure, charging networks and technical services.