Operations
VKG's two main areas of operations are shale oil extraction, and electricity and heat production and distribution.
Shale oil production
The subsidiary producing shale oil is VKG Oil. The company utilizes two different processes: Kiviter and Galoter. The company also tested but rejected the Alberta Taciuk Process. In total, VKG Oil processes 2 million tons of oil shale per year, producing 250,000 tons of shale oil.
The company operates several Kiviter retorts, the largest of them having a processing capacity of 40 tonnes per hour of oil shale feedstock. As of 2016, these retorts were out of operation due to low oil prices. It also operates three Galoter-type retorts called Petroter. Engineering of the retort was done by Atomenergoproject of Saint Petersburg; engineering of the condensation and distillation plant was done by Rintekno of Finland. The first Petroter plant has a processing capacity of 1.1 million tonnes of oil shale per year, and it produces 100,000 tonnes of shale oil, 30 million cubic metres (1.1 billion cubic feet) of oil shale gas, and 150 GWh of steam per year.
Power generation and distribution
VKG's subsidiary VKG Energia, a power and heat generation company, was established in 2004 after VKG bought the Kohtla-Järve Power Plant and the Kohtla-Järve heat distribution system from Kohtla-Järve Soojus. In 2005, it bought another power plant in Kohtla-Järve from Fortum Termest. In 2006, VKG bought a 40.8% stake in Kohtla-Järve Soojus, an operator of the Ahtme Power Plant, and in 2010 it took a full control of the company, now VKG Soojus. All generations capacities were transferred to VKG Energia while VKG Soojus is responsible for heat distribution. VKG Energia has installed electrical capacity of 80 MW and heat capacity of 700 MW.
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In July 2006, VKG acquired Narva Elektrivõrk, the second-largest power distribution company in Estonia, and renamed it VKG Elektrivõrgud.
Other activities
In April 2011, VKG acquired assets of a bankrupt company Silbet Plokk that manufactured cinder blocks for construction from oil shale burning residue. The company was renamed VKG Plokk.
The coalition-agreement of Jüri Ratas' second cabinet formed in 2019 between the Centre Party, EKRE and Pro Patria, expresses support to the development of the local oil industry. Therefore, VKG and Eesti Energia decided to initiate a cost-benefit study aimed at establishing an oil pre-refining plant in Ida-Viru County. The plant would require a 650 million euro investment.
Subsidiaries
Main subsidiaries of VKG are:
VKG Oil - shale oil producer
Viru RMT – company producing, assembling and repairing metal structures, pipelines and pressure equipment
VKG Transport – transportation company
VKG Energia - heat and power generation company
VKG Soojus – heat distribution company
VKG Elektrivõrgud – electricity distribution company
VKG Elektriehitus – construction of power systems
VKG Kaevandused – oil shale mining
VKG Plokk – production of cinder blocks
OOO Slantsehim (73.4%) – developer of Boltysh oil shale deposit in Ukraine
