We provide balance and capacity services in the Nordics

Power Without Compromise

Reliable and Fast

Primrock provides balance and capacity services. We operate decentralized units supplying adequate power with highest possible reliability, precision and speed. Our facilities meet the need for reserve capacity to maintain stability in the Nordic synchronous system as well as power flexibility and quality at the local level.


Primrock is the first company to provide frequency containment services in Sweden from a decentralized energy storage system. Our independence allows us to bring novel, efficient and user centric solutions to the market. We create value with an innovative multi-functional and responsive design and business model.

Supporting Sustainability

Primrock supports the expansion of renewable power generation by providing capacity that can be used as synthetic inertia and for frequency restoration after grid disturbances. In addition, our capacity services facilitate the electrification of new sectors, notably by enabling a rapid introduction of electric


Partner with Primrock

Primrock operates facilities capable of supplying local power capacity in addition to our grid services. We offer local customers the opportunity to buy power flexibility and power quality as a service. Our system is based on a combination of physical components and sophisticated controls that create substantial leverage and capacity to meet varying local needs, e.g. ultra-fast EV charging. Please contact us for more information about our capacity services.

Invest with Primrock

Primrock develops distributed facilities providing capacity and balance services. Our expansion involves additional capacity to meet the increasing demand for reserves in the Nordic system and a forthcoming need for local capacity to serve a growing fleet of electric vehicles. Institutional and professional investors can invest with us in physical capacity and decentralized system solutions. Please contact us regarding financing of our future capacity.

Work with Primrock

Primrock seeks talent that wants to work hard to make a difference. We search for souls excited by the idea of developing technology and services for a sustainable future. We search individuals motivated by challenges that require a systemic and rapid change through innovation and investment. We seek people capable of supporting decision making based on systematic analysis of data. Please contact us regarding career opportunities. [NOW HIRING!]


Primrock operates the first energy storage system to provide frequency containment services to the Swedish TSO, Svenska Kraftnät. The facility has a 0,6 MW capacity and was developed as a research project with financial support from the Swedish Energy Agency. Hardware and software were developed and approved by Svenska Kraftnät in 2019. The system started commercial operations and providing capacity to the Nordic synchronous system in the beginning of 2020. It consists of two identical and independent systems working in parallel. In 2021, the experience from Delaktig has been used for a significant scale-up in Primrock’s capacity. By the end of 2021 we expect to have increased or market share in balancing markets tenfold.

The Primrock Powerbank™

The main building block of our scalable and decentralized capacity is the Primrock Powerbank. It is a power module with capacity to provide multiple services, including peak load capacity and power quality improvements. It works at standard voltage with alternating current and can be used in any regular installation. Our proprietary design yields significant local flexibility, even with limited use of DSO capacity. It permits scaling and expansion with additional units connected in parallel depending on local needs. In the Spring and Summer of 2021 we have successfully deployed 12 units of the Primrock Powerbank. We are currently preparing a large number of new units soon to be ready for commissioning.


Gustav Bergquist is the CEO of Primrock . He has more than 10 years of experience from critical infrastructure. Gustav is a multi faceted tech guy with a business administration background. He likes to engage with customers, and he enjoys a challenge. He is passionate about building critical infrastructure to support the transition to a 100% renewable energy system. Gustav also serves as the Chairman of the Board at the Swedish Datacenter Industry Association.

Gustav Bergquist


Mattias Ganslandt is a PhD and Associate Professor (affiliated) at Lund University. He has published extensively in international peer review journals. He has spent the last 10 years inventing and developing new services and market designs in the energy sector. His passion is to provide innovative solutions that supports a faster transition to a sustainable economy. In his spare time, he enjoys cross country running and skiing, on and off the beaten path.

Mattias Ganslandt


Regulatory Update 20 October 2023

MFRR Capacity Market Launched 

Svenska kraftnät initiated a national capacity market for manual Frequency Restoration Reserves (mFRR) on October 17. In its early days, trading has been successful, enabling more participants to contribute to electricity system balance. This market ensures a certain volume of regulation bids is available the day before operation, lowering risks. In the first auctions, capacity bids exceeded demand, with varying prices between electricity areas. This national capacity market is a step towards a common Nordic capacity market, supporting a transition to automated energy activation for mFRR and more area-based balancing, promoting reliability in the evolving electricity system. Demand for bids will increase gradually, with more details expected in December for the first quarter of 2024. 

Read more: Svenska Kraftnät 

Svenska kraftnät Proposes Price Hedging on Borders 

On October 13, 2023, Svenska kraftnät (Svk) submitted proposals for enabling price hedging products at the Swedish-Finnish electricity borders, as mandated by the European Union Agency for the Cooperation of Energy Regulators’ (ACER) September 2022 decision. Price hedging is a financial strategy used to protect against potential losses due to price fluctuations by locking in a predetermined price for a future transaction. Fingrid, Kraftnät Åland, and Svenska kraftnät are required to implement these arrangements. While Fingrid is appealing ACER’s decision, further submissions from Kraftnät Åland are pending. Svk’s proposal was submitted to the Swedish Energy Market Inspectorate. This initiative aims to enhance the functioning of the electricity market.  

Read more: Svenska Kraftnät 

ACER’s September 2022 decision: ACER 

Swedish Energy Reporting Shifts to 15-Minute Intervals 

On November 1, Sweden is to implement an updated metering regulation, requiring 15-minute reporting of energy production and consumption, following an EU directive for 15-minute imbalance settlements. The move aims to enhance power system flexibility. While non-monthly metered data switches to 15-minute intervals, imbalance prices and cross-border trade will continue with hourly data for a period. Additionally, settlement service company eSett will take charge of standard deliveries and monthly reconciliation settlements, impacting reporting and billing for Swedish energy market players. 

Read More: Svenska Kraftnät 

We keep an eye on regulatory developments and activities related to grid standards, the EU single market, Nordic TSO co-operation and national legislation. We regularly publish updates on the regulatory development with relevance for our business.

Contact Us

We are incorporated under Swedish law and headquartered in the Capital of Scandinavia

Primrock AB
Stora Skuggans v 32
SE-115 42 Stockholm, Sweden
[email protected]

Photographer: Kristina Sahlén
© Primrock, 2020-2023

Power Without Compromise

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