TERI Energy & Environment Data Diary and Yearbook (TEDDY) is an annual publication brought out by The Energy and Resources Institute (TERI) since 1986 which presents state of art information on energy supply, energy demand and environment. The data in TEDDY is compiled from various government sources, policy documents and other secondary data. The data in the yearbook provides the latest available information at the time of compilation of the chapters. Each edition of TEDDY contains India’s commercial energy balances that provide comprehensive information on energy flows within different sectors in the economy. TEDDY is a well referenced document and is often cited in government policy documents and scholarly articles. It is envisaged that TEDDY in future could become a periodic source for a discussion on energy and environment goals.

The overall structure of this year's TEDDY is the same as the previous editions, with some improvisations.

The table below lists the chapters of the publication.