VRT assists the owners and managers of underwater structures in all phases of the construction project from planning to project management and maintenance. Cooperating with Jyväskylä Energy Group before their new pipeline installations, VRT collects 3D data and assists Jyväskylä Energia Group to utilise it wisely in building and maintenance.

VRT Finland Ltd. and Jyväskylä Energy Group have been collaborating for years.  This summer VRT is performing underwater sonar inspections and surveys for Jyväskylä Energy Group in different locations. Jyväskylä Energy Company is planning and constructing a 25-kilometre long wastewater transfer pipeline between Lievestuore and Jyväskylä as a part of Jyväskylä Energy Group’s Pisara concept. Constructing the transfer pipeline will start during the upcoming fall.

About 7 kilometres of the transfer pipeline will be installed in the bottom of the lake. During this summer VRT is performing sonar inspections in Leppävesi, Päijänne and Jyväsjärvi in order to collect and check the baseline data for planning the new pipeline. After constructing, the installed pipelines will be surveyed with the same technique.

The digital measurement results collected by VRT’s sonar inspections are delivered for the client via a web-based portal, VRT BIM Online Service. In the Lievestuore project Pisara is piloting how this portal can be utilized among all the parties involved in the project, and in the asset management of pipeline’s lifecycle.

– The amount of digitalization is growing up in all construction projects and during these days a lot of information is saved in even more accurate form. Digital material can be already utilized variously in planning the construction work. Virtual technology increases the utilizing possibilities in the future even more, explains the head of construction Kimmo Järvinen from Jyväskylä Energy Group.

With the pilot carried out together with VRT, one new model is inspected in the field of digital modelling.

– VRT was the first in the world to perform structural inspections with required accuracy using sonar technology, and we are also the first ones in the world to offer the possibility for the client to utilize and analyze the collected 3D data easily via VRT BIM Online Services, states VRT’s VP Business Development Mikko Kolehmainen.

In VRT’s and Jyväskylä Energia Group’s collaboration the know-how of both companies is combined and the information collected from the sonar inspections is utilized wisely in the needs of planning, constructing and maintaining the pipelines.

VRT Finland Oy was founded in 2010 and is specialized in sonar inspections on underwater structures. Winning two growth competitions (Kasvu Open and Startup Sauna) in 2013 sped up the growth and opened doors to international markets. The  company has currently operations in the Nordic countries, Germany and the UK. The growing company is no employing approximately 20 people.

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Pisara is a service concept developed by Jyväskylä Energy Group. Pisara combines high technology and Finnish water expertise into a new kind of service. Pisara helps to strengthen water supply through external experts, solutions and business models. Pisara maintains and develops water supply both as a technical system and as a valuable asset.


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Karri Kolehmainen & Ville Mäkeläinen

Karri Koistinen

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Ville Mäkeläinen

+358 44 513 2222



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