From 1936 until 1940, the remarkable Latvian cameraman and photographer E. Kraucs (1898 – 1977) regularly, 1 – 2 times a week, photographically documented the construction of the Kegums power plant.
The Kegums power plant is the largest power industry object of the first half of the 20th century in the Baltics and northern Europe – a unique engineering-technical building. The technological solutions used in its construction were unique in Europe at that time. The Kegums power plant holds a prominent role in the history of the Latvian state and as a symbol of the national consciousness. It is the starting point of a unified state power system and the creation of Latvenergo Group. It enhanced a rapid development of the national economy and improvement of welfare for the population.
The photo negatives collection of E. Kraucs comprises 1,736 negatives on glass plates. This collection is a unique, monographic document in regard to both the facts depicted and the period – it is the only known example in Europe of such a comprehensive photographic documentation of the course of a building project.
The originals of the collection are stored at the Museum of Energy of the Latvenergo Group in Riga, the Republic of Latvia.
In 2009, this collection was included in the Latvian National Register of the UNESCO program "Memory of the World".