The following description refers to the overall project to be realized. Further explanations on lot-specific procurement are specified in II.2.4.

Vattenfall Wärme Berlin Aktiengesellschaft operates a district heating system in Berlin consisting of several district heating networks with a total length of approximately 2,000 km and 10 large generation sites as well as a large number of smaller heating plants and CHP plants with a total generation capacity of around 5,000 MWth and around 2,350 MWel. In addition, a refrigeration network with a length of approximately 10 km and an output of around 40 MWth is operated. Approximately 1.3 million households are currently being supplied with heat across the entire district heating system.

The aim of the “System Control Center” project is to construct a new KRITIS system room with workshop, warehouse and office space in an existing building and the construction of a new one-storey building, the so-called “technical building”.

The necessary planning is largely carried out by an already commissioned planner.

The procurement project is divided into 4 main lots:

Lot 1: Technology & Construction (separate TED release)

Lot 2: Waitentechnik (separate TED release)

Lot 3: Waitroom equipment (separate TED release)

Lot 4: High current

An existing building from 1970 will be used as the future location of the system station in Berlin. This has a footprint of approx. 78.68 x 78.68m with a height of approx. 12m. It consists of two floors and has been used so far as a waiting & switchgear, among other things. In the run-up to the activities advertised here, the building is gutted to the shell construction except for the roof and façade cladding. The future technical building is single-storey and is planned with a floor area of approx. 36.51 x 9.26 m and a height of approx. 6.90m.

In the future, all actions to manage, monitor and optimize the district heating system described above should take place from the system station. The district heating system in this context consists of all heat and power generators as well as district heating networks within the Berlin supply area.

The prerequisite for achieving this goal is the integration of all producers distributed across Berlin's urban area (heat and electricity) and all components of the district heating network into the newly built system station.

A boundary condition is the continuation of decentralized maintenance of the generator plants and the continued function of the district heating network today, which is to be converted to a reserve station for the district heating network later on.

The combination of local maintenance into the common system room results in the classification of the district heating system as a critical infrastructure. The resulting CRITIS requirements - failsafe operation and availability - must be taken into account at all times during the planning and construction of the system station.

The system maintenance complex includes the control room (approx. 1000 square meters, 20 workstations) as well as server and side rooms. In total, around 120 workers will work in shifts in the system maintenance complex.

The adjacent workshop, warehouse and office space is designed for around 150 employees with a scope of around 6,000 m² of usable space.

In total, it is a detached existing building with approximately 51,000 m³ gross volume (BRI) and approximately 9,800 m² of gross floor area.

In the current phase, the issuing body needs suppliers to deliver supplies and services from different technical departments to implement the described project. The specific scope of services is described under point II.2.4. The start of performance is planned for the beginning of Q2/2022.

This publication applies exclusively to lot 4 “high current”.

In order to provide the applicant with guidance for the required scope of services, services are listed below in part according to the current planning status of the project. This is a planning status that can be adjusted in the course of the project if necessary.

Within lot 4 “high current”, the necessary electrical equipment is to be procured, erected and put into operation, which are required for the power supply of the consumer of the service, grid control technology, technical building equipment, after-users and other consumers.

The system room building and associated systems are fed into the building from existing medium-voltage switchgears on the site.

The scope of delivery of lot 4 “high current” includes the following systems:

- Expansion of existing 10 kV and 6 kV switchgears in the heat and power plant and hot water boiler on the site in Marzahn two additional fields and conversion of two existing fields

- 10 kV and 6 kV feed cables, routing in stock

- meter cabinets according to the requirements of the measuring point operator

- Two pieces 3.2/1.6/1.6 MVA cast resin transformers

- Two pieces 1500 kVA grid replacement systems including ancillary systems such as feed, control and synchronization, 18 m high chimney, day tank, recooling, preheating, sound blinds, etc.

- Two floor tanks with a capacity of approx. 25,000 l including connecting cables, with leakage monitoring, double-walled design

- Two pieces modular UPS systems with an output of approx. 480 kVA

- Two battery systems for a 30-minute supply of connected consumers, type OPZV including racks, tubs, battery connection unit, etc.

- Two low voltage main distributions for supplying standard grid consumers, type-tested, in plug-in technology, at least 2500 A feed-in power switch, fault arc class C, approx. 10 fields each

- Two pieces 400 V UPS distributions for supplying critical consumers who need an uninterruptible power supply, type-tested, plug-in technology, at least 800 A feeder power switch, arc class C fault arc, approx. 8 fields each

- Two pieces 220 V DC distributions for the control power supply of electrical systems and equipment

For this scope, a long-term maintenance contract (hereinafter referred to as “LTSA”) is part of the procurement.

The (total) power is divided into the partial power “high current” and the partial power “LTSA”. However, it is common in the industry to jointly evaluate the above partial performance when considering the cost-effectiveness of such services. Following this, the overall cost-effectiveness of an offer via the “high voltage” and “LTSA” is evaluated in the quotation process when deciding on the most economical solution. Therefore, it would be pointless to split more lots. More information will be found in the procurement documents.

In order to reflect the respective responsibility of partial performance fairly, a contract for the “high current” and a separate contract for the “LTSA” should be concluded — customary in the industry. It is possible to conclude two contracts with a company that offers both service parts (contracts) separately in one offer. It is also possible for one or more members of the bidding community to take over the “high current” in a bidding community (i.e., the respective member concludes the high-current contract) and one or more members of the bidder community will enter the “LTSA” (i.e., the respective member closes the LTSA). For more information see also: III.1.8.) It is excluded from offering the total output (high current and LTSA) in just one contract from one company. The offer of partial power by a company (e.g. “high current”) that provides for a subcontractor for a further partial output (e.g. “LTSA”) is also excluded. The client wants to directly select and contract with the person who is responsible for the respective partial performance.