Project References
Europe
Salto de Chira Pumped Storage Hydropower Plant (cavern and water tunnels)
Spain, Gran CanariaProject duration: 2024–2026
Products supplied: : NC-bolts (M33) with Pc-coat™.
The Salto de Chira pumped storage hydropower station – also known as the Chira-Soria plant – is a landmark 200 MW energy storage project under development in Gran Canaria, Spain. It is the first large-scale energy storage facility in the Canary Islands and a key component in the region’s transition to renewable energy
The project is expected to boost renewable energy production by 37% and reduce annual CO₂ emissions by 20%. A defining feature of the facility is its extensive underground infrastructure, with approximately 91% of the plant built below ground to minimize environmental impact and preserve the natural landscape. This includes large caverns housing generators and transformers, as well as access tunnels and shafts.
Pretec supplied NC-bolt M33 rock bolts with Pc-Coat™ corrosion protection, ensuring long-term safety and durability in the demanding underground conditions. Our corrosion-protected rock bolts ensure long-term stability and safety of underground structures in harsh environments – enabling infrastructure that lasts.
Builder: Red Eléctrica de España (REE)
Contractor: OSSA International (+ Dragados and Cobra consortium)
E39 Rogfast (World’s longest undersea road tunnel at 26.7 km)
Stavanger, Norway 2023-2026Products supplied: : NC-bolts (M20 and M24), Pc-bolts™ and rebar bolts. All in Pc-coat™.
The E39 Rogfast project will be the world's longest (26,7 km) and deepest undersea tunnel (Deepest point at 390 m under sea). When Rogfast is in place, the journey time between Stavanger and Bergen will be reduced by around 40 minutes.
• Tunnel profile 2 x T10.5
• Dual tunnel, 4 lanes, maximum incline 5 %
• 4 km long tunnel up to Kvitsøy, maximum incline 7 %
• 8.5 million cubic metres excavated rock forlandfill.
More information here
Builder: Statens Vegvesen, The Norwegian Highways Authority
Contractor: Implenia
Fornebubanen
Oslo, Norway 2020-2029Products supplied: : NC-bolts (M20, M22 and M33), Pc-bolts™ , rebar bolts and anchors for tunnel lining. All in Pc-coat™
The Fornebubanen is the largest subway development in Norway in many decades. The new subway line between is between Fornebu and Majorstuen in Oslo city. The stretch is approx. 7,7 kilometers. The entire route goes in a tunnel through complicated geology and urban areas. In addition, six new underground subway stations will be built on the stretch.
The project uses conventional driving methods in the tunnel work, which means that they drill and blast rock in the excavation phase. The rock is then secured with state-of-the-art rock bolts and shotcrete to secure the tunnel throughout its lifetime. The rock must then be injected, which means that it is sealed before it is blasted further, to avoid seepage and thus impacts on the surroundings.
Builder: Oslo municipality and Akershus county municipality
Contractor: Implenia, Veidekke, Metrostav, NRC, Nordisk Fjellsikring
Rönnskär
Skellefteå, Sweden 2018–2024Products supplied: : Pc-Bolts™ .
Implenia got the task of building a final repository for process waste from Boliden's copper smelter 350 meters below Boliden's Rönnskär plant. A total of 345,000 m3 of rock was drilled and blasted to create 1,212 meters of storage space divided into 8 storage rooms, as well as various tunnels and halls totalling 1,268 meters. The rooms in the deep repository are 18 meters high and 16 meters wide. .
Builder: Boliden
Contractor: Implenia
Citylink Anneberg-Skanstull tunnel
Stockholm, Sweden 2018–2024Products supplied: : Rock support, rebar bolts, Pc-Bolts™.
Svenska kraftnät is building a new electricity connection between Anneberg and Skanstull to meet the growing need for electricity in Stockholm. The Anneberg-Skanstulls tunnel is the second of four phases in the Citylink project. The electricity connection will be an approx. 14 km long tunnel located around 50–100 meters under the city of Stockholm. More information here. .
Builder: Svenska kraftnät
Contractor: Hochtief, Implenia
Käppalaverket
Stockholm, Sweden 2022–2027Products supplied: : Rock support, threaded bars and more.
NCC is refurbishing the Käppalaverket wastewater treatment plant on Lidingö, outside of Stockholm, in partnership with the Käppala Association, to upgrade the plant’s capacity and performance. Käppalaverket will continue to operate throughout the entire refurbishment process. Confined underground chambers place high demands on logistics and working methods. The refurbishment of Käppalaverket is scheduled for completion in 2027 when the tightened treatment requirements come into effect. More information here..
Builder: Käppalaförbundet
Contractor: NCC
Västlänken – The West Link (railway connection tunnel)
Gothenburg, Sweden 2018–2030Products supplied: : Rock support, rebar bolts, Pc-Bolts™, Pc-Coat™ nuts and lot of other accessories to drainage, lifting nuts, rebar, nets, expanders, wire, wirelocks, Gewi bolts – coated and untreated.
The West Link is a major transport infrastructure project in Gothenburg, West Sweden. The project is a railway connection in a tunnel under the center of Gothenburg. The tunnel will connect commuter rail services to routes that pass through the city, and give rise to three new stations in Gothenburg. Pretec delivers to all stations and other project constructions in the work; station Haga and Korsvägen, tunnel through Skansen Lejonet/Gullberget and tunnel through Kvarnberget. More information here..
Builder: Trafikverket
Contractor: NCC, Veidekke m.fl.
Stockholm’s new metro
Stockholm, Sweden 2019–2034Products supplied: : Rock support, rebar bolts, Pc-Bolts™, water and frost protection, installation bolts and more..
The expansion of the metro system is the largest investment in public transport in the Stockholm region since the 1970s. Expanding the Stockholm metro will require many different contractors, for both large, complicated contracts and smaller assignments. The major construction works were begun in 2020 and are expected to take eight to ten years to complete. Pretec delivers to most stages and project constructions in the work of the metro; Sofia Station, Hagastaden, Kungsträdgården, Gullmarsplan, Sockenplan and Sickla. More information here.
Builder: Region Stockholm
Contractor: Implenia, Subterra, Metrostav, NCC, OHLA and CRTG
The Varberg tunnel (train tunnel)
Varberg, Sweden 2019–2025Products supplied: : Contact line foundation, all rock support, all bolts to water and frost protection, huge steel pipes and drain bolts. All in Pc-Coat™
The expansion of the railway through Varberg is one part of the expansion of the entire West Coast Line between Gothenburg and Lund. The intention is to create a quick, efficient, and environmentally friendly means of transport for both people and freight. The West Coast Line is one of the most important railways in Sweden. Its expansion to a double-track railway has been under way for many years and currently approximately 85 per cent of the West Coast line has been upgraded. With a fully upgraded double track, the capacity of the line will be greater and will mean an increase in the frequency of services for both passenger and freight trains. More information here.
Builder: Trafikverket
Contractor: Implenia
The Stockholm bypass (road tunnel)
Stockholm, Sweden 2015-2025Products supplied: : Pc-Bolts™ and standard rebar bolts- All in Pc-Coat™. Rock support, self drilling anchors, rebar bolts. Water and frost protection. Threaded bars, plates, bolts, fastening materials.
E4 The Stockholm bypass – Förbifart Stockholm – is a new route for the European highway (E4) past the Swedish capital. The new link will connect the southern and northern parts of the Stockholm County, relieve the arterial roads and the inner city of traffic and reduce the vulnerability of the Stockholm traffic system. Pretec delivers to several stages in the project: Akalla, Skärholmen & Sätra and Lovön. More information here.
Builder: Trafikverket
Contractor: Subterra
Eysturoy and Sandoyar tunnel (sub-sea road tunnels)
Faroe Islands / Denmark 2016-2020Products supplied: Mainly Nc-Bolts™. Also simple rebar bolts and self drilling anchors. All in Pc-Coat™.
The Eysteroy-tunnel is the first of two sub-sea tunnels being built by NCC on the Faroe Islands, and Pretec is happy to have signed the contract for rock support products.The materials will be delivered during a 3 years period. The two sub-sea tunnels, with a length of 11,2 and 10,5 kilometers, are the largest investment in infrastructure on the Faroe Islands ever and has a budget of 2.6 billion DDK. These tunnels will connect the islands Streymoy with Eysturoy and Streymoy with Sandoy. When the two tunnels are finished, travel time to the capital Torshavn will be shortened up to 1,5 hours for many of the residents on Faroe Islands. More information and pictures here and here.
Builder: P/E Eystur- og Sandoyartunlar (EST), a company wholly owned by the County Council of the Faroe Islands
Contractor: NCC
Fv. 17 Liafjellet–Olvikvatnet, (road tunnel)
North Norway, close to the Arctic Circle 2016-2019Products supplied: Mainly Nc-Bolts™, but also few Pc-Bolts™ with rubber packers. All in Pc-Coat™.
The project includes the construction of two road tunnels. The Bakliholtan tunnel in the north is 443 m long, while the Liafjellet tunnel located in the south is 2,005 m long. More information here and here.
Builder: Nordland county / Norwegian road authorities
Contractor: PNC/Porr
Dýrafjardargöng, (Road tunnel)
Westfjords, Iceland 2017-2020, Products supplied: Nc-Bolts and standard rebar bolts. All in Pc-Coat™.The tunnel will be 5.6 km long and will shorten the route of the Vestfjarðavegur by 26 km. The estimated cost of the tunnel is ISK 9.2 billion. More information here and here.
Builder: Vegagerðin (Public Road Administration on Iceland)
Contractor: Metrostav
Devoll hydropower, (water tunnel)
Balkan, Albania 2016-2018Products supplied: PC-boltsTM and standard rebar bolts. All in Pc-coating.
The 150 meter dam will be one of the highest in the world, connected to the production center with an 11 kilometer long tunnel. More information here.
Builder: Statkraft
Contractor: Limak Construction
The Ryfylke (Solbakk) subsea crossing, Sub-sea road tunnel
Stavanger, Norway 2013-2017Products supplied: Mainly PC-boltsTM. All in Pc-coating.
As the last bit is drilled 2017-10-26 Ryfast becomes the longest undersea road tunnel with its 14.3 km length. More information here.
Builder: Statens Vegvesen, the Norwegian highways authority
Contractor: AF Gruppen
Länsimetro I and II, Subway under City of Helsinki and City of Espoo
Helsinki, Finland Phase I 2009-2017, Phase II 2014-2023Products supplied: Mailnly NC-bolts and rebar bolts. All in Pc-coating.
Phase I was completed in the autumn of 2017, about 14 kilometer of tunnel, some parts of the tunnel is subsea, including eight stations. Phase II did start 2014 and will be ready Year 2023. Phase II is about 7 kilometers long and have five stations and one train depot. More information here.
Builder: City of Helsinki and City of Espoo
Contractors: YIT Infra Oy, SRV Infra Oy, Skanska Infra Oy, Destia Oy, Kalliorakennus Yhtiöt Oy, Metrostav A.S
Vt 12 Tampere rantatunneli, Road tunnel
Tampere, Finland 2013-2017Products supplied: Mainly PC-boltsTM. All in Pc-coating.
The project consists of two parallel tunnels with a total combined length of 4.6 kilometer. Tunnel did open for traffic Year 2016 and was completly finished 2017. More information here.
Builder: Liikennevirasto, the Finnish trafic authority.
Contractor: YIT Infra Oy (old Lemminkäinen Infra Oy)
Transport infrastructure project (Train tunnel)
Gothenbur, Sweden 2018-2022Products supplied: PC-boltsTM and standard rebar bolts. All in Pc-coating.
The West Link is a railway connection in a tunnel under the center of Gothenburg. The tunnel will connect commuter rail services to routes that pass through the city, and give rise to three new stations in Gothenburg. More information here.
Builder: Trafikverket
Contractor: NCC
New Slussen, one of the largest urban transformation projects in Sweden
Stockholm, Sweden 2018-2021Products supplied: PC-boltsTM and standard rebar bolts. All in Pc-coating.
The construction of the New Slussen is one of the largest urban transformation projects in Sweden. The bus terminal: will be placed inside the Katarina bedrock. A safe and modern hub will be created for commuters from Nacka and Värmdö. The bus terminal will be connected with Saltsjöbanan and the underground, facilitating indoor movement between buses, trains and the underground. More information here.
Builder: Stockholm City
Contractor: Implenia
E4 The Stockholm bypass, (Road tunnel)
Stockholm, Sweden 2015-2025Products supplied: PC-boltsTM and standard rebar bolts. All in Pc-Coat™.
E4 The Stockholm bypass – Förbifart Stockholm – is a new route for the European highway (E4) past the Swedish capital. The new link will connect the southern and northern parts of the Stockholm county, relieve the arterial roads and the inner city of traffic and reduce the vulnerability of the Stockholm traffic system. More information here.
Builder: Trafikverket
Contractor: Subterra
Outside Europe
NEOM
Tabuk Province, Saudi Arabia 2022-2025Products supplied: : NC-bolts (M22 and M33)
Project NEOM in KSA has four parts: The Line, Oxagon, Trojena and Sindalah. The whole project covers an area of 26,500 square kilometers, which is about 33 times the area of New York City in the United States. Initially, it was expected to invest 500 billion US dollars, jointly funded by local and international investors in Saudi Arabia. Developers plan to complete most of the construction work by 2039. More information here
Builder: NEOM
Contractor: Multiple
Hatta Pumped Storage Hydroelectric Project
Hatta in the Hajar Mountains, 140 km southeast of the city of Dubai, United Arab Emirates (UAE). 2019-2024Products supplied: NC-bolts. All in Pc-coating.
The Hatta pumped storage hydroelectric project will be the first hydroelectric power station in the Arabian Gulf region (GCC). It is part of the Dubai Clean Energy Strategy 2050 program, which has a goal of providing 75% of Dubai’s total power generation from clean energy sources by 2050. Designed to run for 80 years, our Pc-Coated NC-bolts was a natural choice to ensure the specified service life in the most challenging environments.
The Hatta hydroelectric facility will consist of a lower and an upper reservoir to store and use the surplus water from the Hatta Dam. Both reservoirs will be connected by a 1.2 km long pressure tunnel. Additionally waterways will consist of one tunnel of approx. 1300m length and 7m diameter to feed the powerhouse with approx. 200m³/s. Also part of the works is the construction of two road tunnels with a length of approximately 470 m and 440 m using blast excavation.
For more information: Here & Here
Builder: Dubai Electricity & Water Authority (DEWA)
Consultant: EDF Group, Artelia
Contractor: A consortium of Strabag, Andritz Hydro, and Ozkar
Zhengwan high-speed railway Project/Hubei
Hubei Pro, China 2017-2022Products supplied: PC-boltsTM with accessories. All in plain.
Zhengwan High-Speed Railway is an important part of Zhengyu (Zhengzhou-Chongqing) high-speed railway, and is also an important section of the national railway network vertical framework—the Beijing-Kunming high-speed railway. The total length of the line is 818 kilometers. More information here.
Builder: Government of Hubei Pro
Contractor: CRCC
Melamchi Water supply Project
Nepal 2016-2018Products supplied: Rock bolts with accessories. All in Pc-coating.
The Melamchi Water Supply Project (MWSP) is considered to be the most viable long-term alternative to ease the chronic water shortage situation within the Kathmandu Valley. The Project is designed to divert about 170 MLD of fresh water to Kathmandu Valley from the Melamchi River in Sindhupalchowk district. Augmenting this supply by adding about a further 170 MLD each from the Yangri and Larke rivers, which lie in the upstream proximity of Melamchi are also being investigated as future supply sources. More information here.
Builder: Government of Nepal
Contractor: CMC , Italy
The Harbour Area Treatment Scheme (HATS)
Hongkong 2011-2012Products supplied: PC-boltsTM with accessories. All in HDG.
The Harbour Area Treatment Scheme (HATS) is collecting and treating the sewage on both sides of Victoria Harbour. Here you can learn about why the scheme was implemented, its phases and what the polluter pays principle is doing to help improve the water quality of our world renowned harbour. More information here.
Builder: Government of Hongkong
Contractor: Leighton-LNS Joint Venture