By combining Vihreä Watti Ltd’s battery technology with energy company Helen’s smart flexibility service and electricity contract, battery investors can benefit from multiple electricity market platforms simultaneously. This makes battery investments as financially profitable as possible.

Finnish energy storage and battery technology company Vihreä Watti and energy company Helen jointly offer their customers a comprehensive solution that combines high-quality battery technology with wide-ranging access to different electricity market platforms.

“With the smart flexibility service, a battery can be connected to electricity reserve and wholesale markets, which maximizes the investment’s revenue stream. The goal is for customers investing in batteries to be able to utilize all relevant market platforms through the service,” says Juho Kaksonen, Product Manager at Helen.

“For companies, battery investments are above all a business matter, and it is essential to provide customers with realistic return expectations. Helen’s electricity contracts and multi-market optimization deliver the best business benefits,” states Tommi Riikonen, Customer Success Director at Helen.

Smart Flexibility ensures the best possible revenue opportunities for batteries by optimizing their participation in reserve and wholesale markets using an optimization algorithm. The algorithm always selects the most profitable market at any given time and controls battery charging, discharging, and energy storage in the power grid as efficiently as possible.

Top-Tier Battery Technology Brings Reliability

The battery technology used in the service has been designed and tested specifically for reserve market use.

“We work with the world’s leading battery manufacturers, BYD and EnerShare, and provide our customers with solutions based on the latest available technology,” says Tero Mäkinen, Sales Director at Vihreä Watti.

The fast response time, high efficiency, and reliable performance of BYD’s and EnerShare’s systems make them ideally suited for demanding reserve market applications, where technical quality and operational reliability are critical to profitability.

The Role of Reserve Markets Continues to Grow

Batteries support the efficient and flexible operation of Finland’s electricity grid. As weather-dependent renewable energy production increases and society becomes more electrified, various balancing and flexibility solutions are playing an increasingly important role in electricity markets.

“In reserve and wholesale markets, prices are determined by supply and demand, and demand is expected to continue growing in the future,” Kaksonen notes.

Battery investments are particularly timely now, as batteries cannot be connected to the electricity grid without limits. In Finland, there are already situations where batteries of a certain size cannot be connected to the grid without significant grid reinforcement measures.

“For this reason, it is not advisable to postpone investment decisions; instead, projects should be brought to the pre-feasibility stage as quickly as possible,” Riikonen advises.

Thanks to the cooperation between Vihreä Watti and Helen, this is exceptionally easy: the entire solution can be assessed with a single contact, and projects are delivered on a turnkey basis. The prerequisites for a project are sufficient physical space for the batteries and adequate grid connection capacity.

“Once the battery is installed, the optimization algorithm runs automatically in the background, and customers are paid their realized revenues monthly. From the customer’s perspective, the solution is as effortless as possible,” Kaksonen concludes.

(Article: Tekniikka & Talous 2026)