The year 1952 - initiation of works in the first transmission pipeline
project. Works on its construktion were conducted simultaneously with
building of RIGA TEC 1.
year 1956 - district heating plant "Andrejsala" (RIGA
VRES) started heat supply to housing area of Riga sea commercial port.
· The year 1958 - to ensure supervision
over construction of heating sources and perfomance there of, a heating
system shop of a combined heat and power plant (TEC 1) was founded in
beginning of the year 1958, that was transformed into Riga municipal
heating system shop in the year 1959.
· November 3, 1958 - the first transmission
pipeline was put in operation. "VEF" and "Railway carriage plant" were
the first consumers of district heating.
· The year 1959 - transmission pipeline
was extended to Matisa Street. Production shop was built at Cesu Street
3 for the needs of Riga municipal district heating system department.
At that time, operated 2, 3 km of network with 89 consumers connected
there to, and amount of heat energy supplied to those in 1959 was 47,
· The year 1960 - the first transmission
pipeline was extended to central railway terminal.
· June 1, 1961 - on the basis of Riga municipal
district heating system shop "Rigas siltumtikli" was established as
an independet entity. In 1972, it was transformed into heat system introduction
and district heating adminitration, but in 1992 it was transformed into
district heating introduction administration that operates withing LATVENERGO.
· The year 1966 - distric heating services
board of Riga municipal housing administration was established, but
in 1971, - Riga municipal enterprise of district heating system "Siltums",
that services internal heating system "Siltums" In 1992, it was structurally
transformed by establishing independent regional heating enterprises
adminitration of municipalities.
From the year 1966 to end of the year 1974 -in connection
with construction of new production source and housing area. Additionally,
there were built many
district heating plants: "KENGARAGS", "DAUGAVGRIVA", "Imanta" and "Ziepniekkalns",
and also reconstructed and modernized boiler houses "VECMILGRAVIS" belonged
to some enterprises, that were a part of the district heating system.
· The year 1974 - TEC - 2 started heat
· The year 1983 - to ensure a stable operation
of district heating system, an automated dispatcher control system was
· March 14, 1996 - for the first time of
Riga's history, a united district heating enterprise joint stock company
"Rigas siltums" was established that started its operation on May 1
of the same year. Function of district heating system introduction administration
of state owned joint stock company under privatization "LATVENERGO".
Riga municipal heat supply of local municipalities and other heat supply
service enterprises were transferred to the new established joint stock
· The year 1997 - JSC "Rigas
siltums" has installed heat meters at its clients premises. Ill
payment for supplied heat an calculated in accordance with the showings
of these heat meters.
· The year 1999 - Riga District
Heating Rehabilitation Project has been completed . Within this project,
financed by SIDA, a demo project has been realised (15 individual heat
substation installed an 5 block substation liquidation ).
· The year 2001 - A toll-free
telephone line for customers' need - 8 0000 090 was set up. The
program of block substations closing down was completed. All 170
block substations in Riga district heating system were closed down;
more han 2500 prefabricated individual substations were installed.
· The year 2002 - The program
of installation of prefabricated individual substations has been
continued. The total number of substations is 3458. After
connection of networks to the Imanta DHP four mid-size boiler
stations were losed down. The work of transformation of the Imanta
DHP to cogeneration mode was begun.