Services

Large-Scale Battery Storage.
From Concept to Operation.

wattss Services develops, implements, and operates battery storage projects from 5 MW upwards – across Europe.

Large-scale battery storage projects involve investments, sites, grids, and regulation. wattss supports the entire lifecycle – or enters strategically at specific phases.

  • Project Development


    Our facilities are located where they are needed: in industrial plants, commercial parks, and grid nodes. They store energy when abundant and deliver it when Europe needs it most urgently.

  • Financing

    We structure project financing together with wattss Capital: from due diligence to capitalization through a dedicated special purpose vehicle (SPV).

  • Implementation (EPC)

    From detailed planning through procurement and civil works to technical commissioning – we deliver the storage system turnkey and on schedule.

  • Operation and O&M

    After commissioning, we assume ongoing operations: maintenance, technical and commercial management, as well as continuous yield optimization.

Projects in Operation

Since 2017, we have accomplished a great deal. From the first groundbreaking in Ingenbohl to the 100 MW project in Arzberg – each of these projects has advanced us further. Here are the facilities we are particularly proud of.

  • Ikaalinen

    13.4 MW

    22 MWh

    Location

    Ikaalinen, Finland

    In Operation since

    2024

    Finland

  • Ingenbohl 2

    8 MW

    8 MWh

    Location

    Ingenbohl, Switzerland

    In Operation since

    2024

    Switzerland

  • Wunsiedel

    100 MW

    200 MWh

    Location

    Arzberg, Germany

    In Operation since

    2025

    Germany

  • Ingenbohl 1

    20 MW

    18 MWh

    Location

    Ingenbohl, Switzerland

    In Operation since

    2020

    Switzerland

Applications

Large-scale battery storage is required at all voltage levels – for grid stabilization, supply security, and market opportunities. Those responsible for energy infrastructure need a reliable partner who understands the entire project cycle. That is what defines wattss Services.

Flexibility for the Energy System.

Large-scale battery storage supports grid stability, enables the integration of renewable energies, and creates additional flexibility in the power system.

Energy Suppliers & Grid Operators

Complex Projects. Reliably Implemented.

wattss Services handles development, implementation, and operation – as an experienced EPC partner from the initial feasibility study to ongoing operations.

City Utilities & Project Developers

Supply Security for Critical Infrastructure.

Battery storage secures critical processes, reduces peak loads, and increases the resilience of energy-intensive sites and public infrastructure.

Industry & Public Sector

Do you have available land, an industrial site, or existing grid connection capacity? Is there a large-scale project that requires an experienced partner?

Submit your inquiry without obligation – we will review the fundamental feasibility confidentially and systematically.

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