WT Energiesysteme – We’re shaping the energy transition!

Q: What is the advantage of a ‘one-stop shop’?

All aspects of the project (engineering, manufacturing, installation, commissioning and servicing) are handled by WT itself – this reduces the number of interfaces and dependencies and shortens the implementation time.

Q: Who does WT build for?

In particular for project developers and investors, as well as for energy suppliers and network operators, and for industry and large-scale consumers.

Q: Does WT also cover 380 kV and battery storage?

Yes – entry into the 380 kV extra-high voltage sector and the launch of a dedicated battery storage business under the WT Energiespeicher brand.

Q: How much experience does WT have?

Successful in the market for over 25 years, with over 250 substations completed and over 200 employees across the entire group.

All trades under one roof

Our extensive in-house capabilities, covering engineering, manufacturing, assembly, commissioning and service, are our key strength.

Turnkey substations up to 380 kV

As a main contractor offering standardised plant designs, we enable our customers to benefit from short lead times and rapid availability of all components.

Core competence with a high degree of in-house production

Planning, construction and maintenance of substations across the entire value chain, with minimal dependencies. Tested quality, certified to ISO 9001, 14001, 45001 and SCC**.

From concept to operation – the entire value chain

We support your project every step of the way. This ensures that interfaces and interdependencies are kept to a minimum. Feasibility study · Approval · Planning; Control cabinet manufacture · Plant construction · Electrical installation; Grid connection · Commissioning; Service.

Services

An overview of our services

All services

01Planning & Approval

Robust concepts, technical design, coordination with the authorities and documentation – all in full compliance with the law.

02Construction & Assembly

High- and medium-voltage installation, primary and secondary technology, switch cabinet construction – all co-ordinated.

03Grid connection

Connection to 110 kV and 380 kV grids, coordination with grid operators, grid connection.

04Commissioning

Protection and control system testing in accordance with utility company specifications, including functional and safety tests, all of which are documented.

05Service & Maintenance

Scheduled maintenance, earthing and short-circuit tests, servicing and fault-clearing service.

WT Energiespeicher

Turnkey battery energy storage systems (BESS) – via our WT Energiespeicher division.

Control cabinet manufacturing

Bespoke switchgear and control cabinets for substations, manufactured in-house, with over 30 years’ experience.

Aerial view of a battery storage plant with substation, battery containers, solar park and wind turbines

Operations building, 110 kV connection

Medium-voltage switchgear and control for the grid connection

High-voltage transformer

Transformation from 33 kV to 110 kV

Operations building for controlling the battery system

Houses the BMS (battery management system), the EMS (energy management system) and the power plant controller for the grid connection

Battery container

Capacity of up to 6.5 MWh

Power conversion system

Conversion from DC to AC voltage, including a step-up transformer from 690 volts to 33 kV

Medium-voltage switchgear and control for the grid connection

Project developer

Substations for wind and solar farms; projects exceeding 20 MW.

Investors & Tenders

Turnkey implementation for tender projects.

Energy suppliers & network operators

Grid connection and modernisation of the existing grid.

Industry & Large-scale Consumers

Own grid connections and substations.

2002

over 25 years’ experience

250+

substations completed

200

Staff

10–380 kV

Voltage range

Outlook

380 kV and battery storage – we’re growing alongside the energy transition

In addition to our core business of 110 kV substations, we are systematically expanding our portfolio. We have entered the 380 kV extra-high voltage sector and established our own business division for battery energy storage systems (BESS) under the WT Energiespeicher brand.

About WT Energiespeicher

Frequently Asked Questions

What does WT Energiesysteme do?

Specialists in the design, construction, commissioning and modernisation of substations and grid connections up to 380 kV – offering turnkey solutions from a single source, with headquarters in Riesa (Saxony).

What is the advantage of a ‘one-stop shop’?

Who does WT build for?

Does WT also cover 380 kV and battery storage?

How much experience does WT have?

Your partner at every stage of your project

Your substation project – let’s discuss it

From feasibility to commissioning: we deliver your project on a turnkey basis.

Start a project enquiry

WT Energiesysteme – Substations and grid connections up to 380 kV

What sets us apart