Varopreem Deploys EV Charging Across Grid-Constrained Sites in Sweden

The Challenge

‍

As Varopreem, formerly known as “Preem,” begins deploying EVcharging across its fuel station network in Sweden, rollout isconstrained by limited site-level grid capacity.
‍

At the first pilot site in Saltsjö-Boo, near Stockholm, available grid connection was not sufficient to support multiplehigh-power chargers operating simultaneously. Without control,charging demand risked creating sharp peaks and triggering high peaktariffs, directly impacting site economics.
‍

At the same time, Varopreem is entering a more advanced energylandscape. With Fortum operating as a their major Balancing Service Provider (BSP)in the Nordics, there is an opportunity to participate in ancillaryservices and energy markets - but only if sites are flexible andintelligently managed.
‍

To move forward, Varopreem needed to:

• Deploy fast chargers within strict grid limits
• Avoid costly peak demand charges
• Ensure stable and reliable charging performance
• Prepare sites for participation in flexibility markets via BSPs like Fortum
• Build a scalable foundation for battery storage and advanced energy use cases

‍

The Solution

‍

Varopreem has decided to work with FLEXECHARGE to deploy their intelligentEnergy Management System (EMS), HARMON-E, that dynamically controlspower consumption at each charging site.
‍

At the pilot site in Saltsjö-Boo, the EMS actively distributes available power across chargers in realtime - ensuring total site demand stays within grid limits whilemaintaining a smooth charging experience for drivers.
‍

Thesolution enables:

• Real-time load management to balance power across chargers
• Peak shaving to reduce exposure to high grid tariffs
• Site-specific optimization adapted to constrained grid capacity
• A standardized EMS layer that can be scaled across new locations
• Readiness for energy market participation, including ancillary services via BSPs like Fortum
• Preparation for BESS integration, enabling further flexibility and control
  ‍

This allows Varopreem to deploy EV charging infrastructure today, withoutwaiting for grid upgrades, while positioning sites for future energyrevenue streams.

‍

‍

Next Steps

‍

Following the initial pilot in Saltsjö-Boo, Varopreem is focused on scaling both infrastructure and energy capabilities:

• Rolling out EMS across additional planned sites in Sweden
• Integrating battery storage (BESS) to further reduce peak loads and increase flexibility
• Leveraging Fortum’s BSP role to explore participation in ancillary services markets
• Optimizing site performance based on real operational data
• Unlocking new revenue streams through arbitrage and flexibility services
  ‍

These next steps support Varopreem’s transition from a pilot project to ascalable, energy-optimized EV charging network, where sites evolveinto intelligent energy hubs.

‍