In many municipalities and regions, the need for maintenance is great when it comes to properties. It could, for example, be about energy efficiency. Energieffektiviseringsföretagen has developed the procurement model EnOff which should facilitate this work. The municipality of Enköping is the first in the country to use EnOff and Rejlers has been commissioned to implement the project. Rejlers Play visited Enköping to find out more about EnOff and how much money can be saved by improving energy efficiency.

Elmea is the network company within Lofotkraft Group, a regional power company owned by the six municipalities of the Lofoten archipelago in Norway. The region is currently in a green transition, where tourism, fisheries, shipyards and aquaculture are all adopting more sustainable practices. As part of this transition, the electricity supply in Lofoten is being reinforced. In September 2023 Rejlers signed an agreement to support Elmea with technical expertise.
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In a project to ensure a reliable power supply fit for the future in the region, Rejlers will contribute with expertise in the design of several 22kV line and cable routes, including ground, sea and overhead power lines as well as substations. Rejlers will lead the project with particular attention given to environmental and safety aspects.
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“This is a long-term investment that will benefit both residents and businesses I  Lofoten. Our main challenge is to meet the increasing demand for capacity in an efficient way, and this project is an important part of that work,” comments Pål Martinussen, CEO of Elmea.

In the ongoing transition to a sustainable energy system, an increasing part of our power supply comes from solar and wind power. This also increases the need to store energy in order to use it at a later time. When the municipal company Habo Energi turned to Rejlers to carry out an analysis of what route would be suitable to strategically develop the local power network in Habo, Sweden, it resulted in a recommendation to build a battery storage facility.

The conclusion was that this would give Habo Energi both commercial and sustainability-related advantages. The battery storage can help to stabilise the frequency in the Swedish power grid, provide opportunities to store energy when electricity rates are low and then sell it at a higher price level, and let the company cut peak power levels in the local network, thereby avoiding certain investments. Following the analysis, Rejlers also got the assignment to prepare procurement documentation for a battery storage facility with a storage capacity of up to 2 MWh.

“We have a long and well-established cooperation with Rejlers and know that they have good competence and the experience to support us with these issues. They have helped us both to find the right path forward and to take more steps to realising a battery storage facility that meets all our demands, not least when it comes to supporting the power network,” says Patric Jönnervik, Energy Manager at Habo Energi.

Finland’s Ministry of Eof Economic Affairs and Employment has granted approximately EUR 4 million to the investment in a heat storage and heat pump facility at Savon Voima’s combined heat and power plant in Joensuu. Funded by the EU’s Recovery and Resilience Facility, the project supports Savon Voima in achieving its climate targets, reducing carbon dioxide emissions by an estimated 3,460 tonnes per year. As Savon Voima’s long-standing partner, Rejlers is responsible for the basic design of the heat pump plant and for the detailed design of the district heat accumulator.

“The accumulator enables more efficient optimization of the electricity production while also improving the security of district heat supply in Joensuu. With modern heat pumps, even low-temperature heat sources, such as river water used for cooling water, can be utilised in the district heat production. This will improve the energy efficiency of the plant and promote carbon neutrality,” says Jukka Varonen, Project Manager at Savon Voima.

With extensive support from Rejlers’ experts within industrial manufacturing, South Korean chemical company Dongjin has set up a new factory in Skellefteå, Sweden. The site is manufacturing conductive slurry materials for batteries, mainly as part of the supply chain for Northvolt’s big new factory producing green batteries in the same city. In this way, the project is supporting the transformation of the European automotive industry in view of a future society free from carbon dioxide emissions.

Dongjin turned to Rejlers for the establishment of two lines of production, of which one was launched in 2023 and the second one is in its final stages. As complete service provider, Rejlers has been responsible for process and mechanical engineering, piping, electricity and instrument automation. Although this is not a turnkey EPCM project, key parts of this model have been in play, with Rejlers taking charge of commissioning, construction, engineering and management, as well as supporting Dongjin within procurement. Given the European and Swedish standards, strict environmental demands and legal requirements have been key for the execution of the project.

1. EPCM = Engineering, Procurement, and Construction Management

The Martta Wendelin municipal day care centre in Tuusula, Finland, is a wooden building designed by AFKS Architects to provide facilities for around 200 children. As measured in cubic metres, it is the country’s largest building of its kind built from solid wood. It has been honoured with the Finlandia Prize for Architecture 2023 and is an excellent example of how to transition towards a more carbon-neutral built environment by implementing methods and interventions that are already available.

The orientation of the interior takes advantage of the southern park landscape and sunlight, while an outdoor canopy serves as a centre for children’s exterior playing. The structures chosen for the exterior walls, partitions and intermediate floors of the 3,252 square meter building are a single-material CLT massive structure that acts as a carbon sink. Rejlers played a key role in the project by managing the design of its heating, ventilation and air conditioning systems.

The prestigious property development project Mariakvartalet is a part of OSU’s (Oslo S Utvikling) transformation of the former container port in Oslo’s Bjørvika neighbourhood, to an attractive new property and business district. Rejlers is responsible for the electrical engineering services in the project, which includes 245 flats with common roof terraces, as well as space for restaurants, shops, services and cultural outlets at street level.

Based on the BREEAM-Nor standard, the project has high sustainability ambitions, with very strict environmental demands covering all steps of the property development. Rejlers will ensure that the new flats offer a high level of energy efficiency which translates into lower energy costs.
The BREEAM certification also means clean indoor air, absence of toxins, an allergy friendly home environment with plenty of daylight, good outdoor areas and easy access to public transportation, as well as plenty of parking for electric cars and bicycles.

When Rejlers’ rock engineering experts in 2023 carried out the annual assignment of inspecting rock cuttings for the Transport Department of the City of Stockholm, Rejlers’ analysis model, called Rejlers Sustianalyzer, was applied to make the assignment more sustainable. For example, thanks to the model, aerial work platforms running on biodiesel were used, Rejlers’ employees car-pooled and one expert commuting from Uppsala used an electric car.

When Rejlers’ Sustainalyzer is applied, instead of just sticking to the usual ways of doing things, the team goes through all the different stages and parts of the assignment in order to find actions that will optimise the work from a sustainability perspective. All the actions are then followed up by Rejlers and included in a report for the customer to see which sustainability aspects were improved on and in what way. For this specific assignment, it was the second year running that the model was applied.