From design to operation: Verston Group company Smartecon to build one of the Baltics’ largest battery storage facilities

Smartecon has signed a contract to build the Raudsepa battery energy storage system (BESS), one of the largest in the Nordic and Baltic region by power and storage capacity. The engineering, procurement and construction (EPC) contract for the facility in Valga County, Tsirguliina covers design, equipment supply, construction, commissioning and grid code compliance. The scope also includes building a 330 kV substation.

Raudsepa will have a power capacity of 192 MW and an energy storage capacity of 420 MWh. The project is backed by Taaleri Energia’s SolarWind III Fund and co-investors. Construction will begin in September 2026, with the facility expected to be fully operational by November 2027.

According to Magno Kure, Smartecon’s CEO, delivering Raudsepa battery storage facilities requires extensive expertise in both energy systems and infrastructure construction. “We are responsible for delivering the entire facility, from design through to commissioning. The engineering challenge lies in integrating the battery storage equipment, control systems and 330 kV substation into a fully functioning system that meets grid code requirements. We manage equipment supply, construction and commissioning as one integrated process,” said Kure.

Battery storage is an essential part of today’s energy system. It helps balance electricity generation and consumption throughout the day, stabilise electricity prices and support the system at critical times.

Raudsepa’s 420 MWh storage capacity is equivalent to the annual electricity consumption of about 150 households, assuming 2,800 kWh per household per year.

According to Jüri Tamm, co-CEO of Verston Group, Europe’s infrastructure must be planned with transport and energy systems in mind. “Reliable connections and a secure energy supply underpin Europe’s economy and security. Alongside energy generation, we need grids and storage facilities that deliver electricity to consumers when it is needed. We commend the client’s decision to procure Raudsepa as a turnkey project, entrusting a single partner with responsibility from design through to commissioning. At Verston, we combine infrastructure construction and energy expertise to deliver projects of this kind,” said Tamm.

The project is jointly owned by Taaleri Energia’s SolarWind III Fund, a co-investor in the fund, and KJK Fund III, managed by KJK Capital. Evecon and French independent power producer Corsica Sole developed it. The facility will use LG Energy Solution’s battery storage equipment and European-made inverters from Power Electronics.

Smartecon OÜ is an energy infrastructure company founded in 2012 that designs, builds and maintains energy generation and storage solutions. Over 14 years, the company has built more than 1,000 solar power plants across five countries. In 2025, Smartecon reported revenue of nearly EUR 35 million and a net profit of EUR 0.3 million. Smartecon is part of Verston Group.

Verston is an infrastructure construction and maintenance group founded in Estonia and expanding internationally, with activities spanning roads, railways, energy and urban infrastructure. Established in 2010, the company combines engineering expertise, digital working methods and responsible resource use to build durable infrastructure and maintain it throughout its lifecycle. Alongside its operations in Estonia, Verston is expanding into other European markets, including Poland.

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