We reliably supply you with energy.

WE PLAN, BUILD AND SUPPORT ELECTRICAL POWER SUPPLY SYSTEMS.

In the field of energy engineering, we make sure your power supply is available in a way that lets you operate reliably, scalably and with confidence in the future. We deliver solutions tailored to your needs in high- and medium-voltage installations, low-voltage installations and energy automation.

Substations
Transformer stations
Transformers

Switchgear manufacturing
Emergency power systems
Busbar trunking systems

Grid planning and infrastructure
Energy automation
Energy engineering service

SUBSTATIONS

In grid connection projects, the decisive course is often set years before commissioning. With STOLL, you have a partner who keeps technical requirements, grid operator specifications, permits and the development of your site in view from the very beginning. This allows risks to be identified early, project timelines to be planned more reliably, and the conditions for a smooth grid connection to be put in place, all while keeping your energy site open to future developments.

Project development & concept phase
Substations & grid connection
Protection systems, automation & communication
Project management & coordination

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ST-Leistungen-Energietechnik-2Trafostationen

TRANSFORMER STATIONS

We develop a transformer station concept that fits your needs. This includes transformer stations in sheet-steel or precast-concrete design, as well as solutions for existing on-site buildings. Where required, we also manufacture them as fully welded, walk-in and mobile container units. Together with you, we determine which system best meets your power supply requirements.

Transfer and feed-in stations
Main load-centre and distribution stations
Building-integrated stations
Rental transformer stations

TRANSFORMERS

We engineer the right transformers to convert your power supply to the required voltage levels. Transformers are frequently part of a transformer station solution. The appropriate transformer technology is selected according to your requirements, e.g. regarding cooling and fire load.

Cast-resin transformers where low fire load is required
Hermetically sealed oil-immersed transformers
Oil-immersed transformers with conservator tank
Bio-transformers filled with vegetable oil or ester fluids

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SWITCHGEAR MANUFACTURING

In switchgear manufacturing, we offer market-leading solutions for your power supply. At our site in Martinszell, we design, build and test switchgear for a wide range of voltage levels. Where required, we also carry out the electrical factory commissioning of these systems and set up the associated switchgear automation for you as a plug-and-play solution:

High-voltage switchgear for substations up to 110 kV (outdoor installations)
Medium-voltage switchgear:
- Air-insulated and gas-insulated systems
- using brands such as Schneider Electric RM6, PIX, or built to customer standards
Low-voltage switchgear up to 7,000 A:
- Power Control Centres (PCC) and Motor Control Centres (MCC)
- using brands such as Schneider Electric (Okken, Prisma) and Sedotec (Vamocon)

EMERGENCY POWER SYSTEMS (EPS)

In the event of a mains power failure, specially dimensioned emergency power systems (EPS) ensure the supply of selected parts of your installation. With fully automatic changeover, continued supply to your systems can be taken over by various power generation sources.

Combined heat and power units (CHP) and diesel generator sets
Emergency generator sets
Energy storage systems

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BUSBAR TRUNKING SYSTEMS

For a highly available and flexible power supply to electrical loads, we use busbar trunking systems from a wide range of manufacturers. These ensure safe operation of your infrastructure and keep every option open for future adaptation and expansion.

Transmission busbars
Process busbars

GRID PLANNING AND GRID INFRASTRUCTURE

To dimension your power supply in the best possible way, we determine your long-term requirements for efficient and safe operation. This involves a holistic view of the power network, the dimensioning of the electrical components, and the use of information and communication technology:

Network calculations
Protection systems
Grid control systems
Telecontrol systems

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With our retrofit solutions, we can extend the service life of your installation and keep your plant technology up to date at all times. Through comprehensive energy management concepts, we permanently reduce your operating costs.

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ENERGY AUTOMATION

We are ready for the future with solutions for energy automation and smart grids, delivering a tailored and reliable energy supply for your installations.

SCADA systems for top-level control solutions
Energy management and load management
Energy monitoring for the following purposes:
- measurement and display
- data acquisition and archiving
- evaluation and analysis
- visualisation

ENERGY ENGINEERING SERVICE

We provide the right service for an uninterrupted flow of energy. With our service concepts, we support our customers through plant operation management and preventive maintenance, and we provide remedies through repairs, troubleshooting, fault rectification and spare parts provisioning. We ensure the lasting operational reliability of your installation via remote maintenance or directly on site.

With our retrofit solutions, we can extend the life cycle of your installation. Through modernisation, we bring your plant technology up to the current state of the art. We permanently lower your operating costs through comprehensive energy management concepts. In addition, our service agreements give you a dedicated contact person at STOLL who takes care of the lasting operational reliability of your installation quickly, directly and without red tape.