Technical Visits

The tours will take place on Friday, September 21th. For each tour the time schedule is different (see below). The fees per participant will be clarified:

Tour 1 – CHPP-2, the largest combined heat and power plant in Latvia
Tour 2 – The Plavinas HPP, the largest hydropower plant in the Baltics and one of the largest in the European Union
Tour 3 Visiting the Campus of Riga Technical University
Tour 4 – Sightseeing tours
The minimum number of participants is 10 for each tour. Please note that if the number is not reached, the tour will be cancelled and the fees either will be reimbursed or the participants have the possibility to join another tour.

Tour 1: CHPP-2

Maximum 25 participants


CHPP-2 is the largest combined heat and power plant in Latvia, located 18 km from city centre, which launched its operation in 1973. In 2006, reconstruction of CHPP-2 was started, with construction of the first power unit of the plant completed in late 2008 and the second power unit commissioned on 23 September 2013, thus finalising the reconstruction of the Group’s combined heat and power plants. Reconstruction allows for electricity output in both cogeneration and condensation mode, which is essential for the security of the electricity supply.

Currently, CHPP-2 is the most efficient and up-to-date combined-cycle heat and power plant in the Baltics. Two combined-cycle gas turbine (CCGT) units and five water boilers are operated at CHPP-2. With the commissioning of the second power unit, the electrical capacity of CHPP-2 in cogeneration mode reaches 832 MW, while the thermal energy capacity of the two power units is 544 MW in cogeneration mode. The electrical capacity in condensation mode amounts to 881 MW. Meanwhile, the total thermal energy capacity of CHPP-2, including water boilers, is 1,124 MW. The back-up fuel reserves (diesel) is intended for five water boilers and two house-service steam boilers.

In 2014-2017, a reconstruction project for the auxiliary equipment part was implemented at Riga CHPP-2, which included the upgrading of the heating network circulation system by installing new circulating pumps to ensure the quality and economical supply of thermal energy on the right bank of Riga. The project involved modernisation of the power supply system for auxiliary equipment, installing several high voltage frequency converters with a nominal capacity of 2,750 kWel each in order to ensure the effective operation of the heating network circulating pumps, as well as improving the hydraulic system and increasing the level of automation. The reconstruction of the system has resulted in a reduction in the power consumption for pumping the water in the heating networks of up to 50%. In order to ensure auxiliary power consumption, solar panels with a total capacity of 4.7 kW have been installed on the roof of the first power unit of CHPP-2.

 

Technical program


Departure from Kipsala International Exhibition Centre: 10:30
Time at the CHH2: 11:00 – 12:00
Arrival at  Kipsala International Exhibition Centre: 12:30

After a short presentation including a description of the Latvian power grid and the role of the CHPP2 in the electricity mix of Latvia and the technical details and achievements of the power station, participants will be lead inside the power station and visit the main hall, halls with power converters, generators, pumps and turbines, automation. + description from Latvenergo

Please be aware of the access restrictions (link to document)

Tour 2: Plavinas HPP

Maximum 25 participants


The Plavinas HPP is the largest hydropower plant in the Baltics and one of the largest in the European Union.

Latvenergo Group generates most of its electricity at the three largest HPPs in the country: Kegums HPP, Plavinas HPP (located 81 km from city centre) and Riga HPP, which together form the Daugava HPP cascade and ensure environmentally friendly electricity generation. They operate on water – a renewable energy source. Although the capacity of the Daugava HPPs is high, their ability to generate electricity depends on the water inflow in the Daugava River. The Daugava HPPs operate at full capacity during the spring flooding season, which lasts for about one to two months annually. Water inflow in the Daugava River during this time may exceed water inflow during low water periods, which occur mainly in summer, more than 10 times. During the spring flooding, Latvenergo Group is able to cover the entire customer demand for electricity. The Daugava HPPs provide for the possibility to accumulate water and generate electricity when the demand and prices on the exchange increase.

Plavinas HPP and Riga HPP can also operate in synchronous compensator mode (adjusting the voltage in high-voltage electric networks), allowing the transmission system operator to ensure the voltage quality.

In 2017, the Daugava HPPs generated a total of 4,270 GWh of electricity, which constituted 59% of the total amount of electricity consumed in Latvia. Due to higher water inflow in the Daugava River, the amount of electricity generated was 74% higher compared to the previous year.

Plavinas HPP plays an essential role in the power system of Latvia. With ten hydropower units featuring a total capacity of 894 MW, this is the largest hydropower plant in the Baltics and one of the largest in the European Union. The plant was launched in 1968. This building is unique in its own way: in construction of the HPP, it was shown for the first time in practice that it was possible to build a medium-head hydropower plant on soft ground. The plant building was constructed across the Daugava River’s old valley floor, filled with soft moraine sediments with a thickness of more than 130 m, while the water spillway with 10 gates is located above the power plant building. The gates are lifted using two heavy duty gantry cranes (2x210t).

The Plavinas HPP dam consists of a right bank dyke (1,220.5 m long), a reinforced concrete power plant structure with a spillway (254.4 m long), a riverbed dam (665.1 m long) and a left bank dyke (1,892 m long).

The scheduled renovation of five hydropower units was carried out in the period from 1991 to 2001, and three more hydropower units were renovated during the reconstruction process from 2007 to 2010. On 16 December 2013, the reconstruction of the remaining two hydropower units was started, and one of the hydropower units has now been commissioned. The reconstruction of the hydropower units has resulted in the improved efficiency rates of the plant and, consequently, contributed to an increase in the amount of energy generated from renewable sources (Hydroturbine 95.4% and generator 98.3%).

In 2017, Plavinas HPP generated about 2,434 GWh of electricity, which is 57% of the total electricity output by the Daugava HPPs.

Technical program


Departure from Kipsala International Exhibition Centre: 8:00
Time at the Plavinas HPP: 9:30 – 10:30
Arrival at  Kipsala International Exhibition Centre: 12:00

After a short presentation including a description of the Latvian power grid and the role of the HPP in the electricity mix of Latvia and the technical details and achievements of the power station, participants will be lead to visit the outside and inside of the power station, dam and water spillways, main hall, halls with power converters, generators, pumps and turbines, automation. + description from Latvenergo

Please be aware of the access restrictions (link to document)

Tour 3: Visiting the Campus of Riga Technical University

Maximum 2 x 20 participants


A CITY WITHIN A CITY is a modern centre of engineering sciences and an area of excellent research. Study process in the laboratories of RTU proceeds in close collaboration with companies ensuring that students are involved in the development of innovative products and new technologies.

You will visit the Faculty of Power and Electrical Engineering – the greenest faculty of the University Campus. Climb the roof to see the only wind generator located on the roof in Riga city and sun batteries that supply energy for the Campus.

In the Faculty of Civil Engineering, you will have the opportunity to visit the Advanced Composites Testing Laboratory and see the process of prototyping/testing and non-destructive evaluation of structural components of materials. The laboratory is the only one in Latvia working in close collaboration with NASA.

When visiting Water Research Laboratory − the leading research laboratory in Baltics, you will see the equipment used in bioenergy research as well as the prototypes and pilot equipment for water security research.

The tour will end with the visit to the RTU Design Factory − an innovation centre where students, researchers and companies work together.

Hosted by Riga Technical University, it provides research and development services for new product and technology development. Interdisciplinary approach allows for covering a wide range of topics: from surgical equipment to kids’ toys, from robotics to improving customer service. Multiple practice-based educational programmes are run to boost product development and entrepreneurial skills; support tools are available for start-ups, spin-offs and technology transfer.

The tour is free of charge


Starting point: Ķīpsala International Exhibition Centre (front door)

Tour duration: 9.00 – 11.00

Tour 4: Sightseeing tours


Old Town Sightseeing (walking tour)
Time: 10:30 – 13:00
Price: 12€ per person
Payment: In cash, directly from the client on tour day
Meeting at Town Hall Square in front of the House of the Blackheads

Old Town Sightseeing (walking tour) + Riga Black Balsam degustation
Time: 13:00 – 15:00
Price: 15€ per person
Payment: In cash, directly from the client on tour day
Meeting at Town Hall Square in front of the House of the Blackheads

Old Town

During the tour you’ll walk along the narrow streets of the Medieval Hanseatic Old Town and enjoy the splendors of the Dome Cathedral, Big and Small Guild Houses and the Riga Castle. The tour starts at the Town Hall Square- the central square of the city from 13th up to 19th century. The most famous building on the square is the magnificent Blackheads’ House. You will also see such famous spots as St. Peter’s Church, the Swedish Gate, Powder Tower and many others.

The 2-hour tour includes the tasting of the magical elixir Riga Black Balsam, which is believed to have the power to cure all diseases.

Art Nouveau in Riga (walking tour)
Time: 15:00 – 17:00
Price: 18€ per person
Payment: In cash, directly from the client on tour day
Meeting at Town Hall Square in front of the House of the Blackheads

Art Nouveau in Riga

Riga is proud of its magnificent heritage of Art Nouveau architecture. It was included in the UNESCO World Heritage list by virtue of the outstanding quality and quantity of Art Nouveau buildings, which is unparalleled anywhere in the world.

The walk will take you through Old Riga to the Art Nouveau district in the quiet centre of Riga, which features the creations of the Art Nouveau architect Mikhail Eisenstein, and where each building is well worth seeing.

You will have a walk along the famous Albert Street, where Art Nouveau buildings range from richly decorated to modest, from Decorative Art Nouveau to National Romanticism. The buildings are highly decorative yet deeply functional. Decorated with various symbols and mythological characters, each building tells us a different story.

Highlights


Dome Cathedral

The foundation stone of Riga Dome Cathedral was laid on July 25, 1211. The last large-scale restoration took place in the late 19th century when the cathedral acquired its present appearance. Today, Riga Dome Cathedral holds services and provide for rich cultural life — various concerts of popular artists take place here.

Riga Castle

Riga Castle has stood on the right bank of the River Daugava for more than 700 years. Through the centuries, it has seen severe destruction, numerous rulers, and wars. Today it houses the residence of the President of Latvia.

House of the Blackheads

This beautiful building stands on the main square in Riga’s old town and buit in 1344.It was used by bachelor members of the blackheads merchant guild. Over the centuries it was expanded and embellished. However, it was completely destroyed in the bombings of 1941.

The building was completely rebuilt and was finally finished in the 1990s.This fits in nicely the inscription over the building’s door “If I should fall, build me again”.

The Swedish Gate

The Swedish Gate was erected 1698 as a part of the Riga Wall to provide access to barracks outside the city wall.