Planning, production, installation and commissioning of an electrode boiler in the combined heat and power plant of Stadtwerke Flensburg.

Stadtwerke Flensburg (SWF) intends to outsource the engineering, supply and installation of an electrode boiler 2 (EHK) for the generation of heat from electrical energy. The electric boiler is to be used for the provision of balancing energy in the TenneT control area in Germany. The generated heat is to be stored in the existing heat storage tank 1, as well as in the newly built heat storage tank 2. The operating voltage is 10.5kV, which is provided by SWFL via an existing transformer (41MVA).

The contractor shall provide the following services:

• Delivery and installation of the EHK 2 in an existing building coordinated with the client (maximum floor area 9.6m x 11.8m including electric engineering room).

• Mechanical and electrical installation of the EHK 2 (incl. self-consumption switchgear)

• Establishment of a standby heating for fast system start

• Configuration of the control / regulation in a redundant PCS7 system existing by the client

• Integration into existing combined heat and power plant

• Implementation of a prequalification procedure for the introduction of balancing energy into the TennetT control area in Germany.

• Completed project management (planning, assembly and IBN) in German

2. Technical details:

The electrode boiler should have the technical details described below.

Electrical capacity 40 MW

Thermal capacity 40 MW

Connection voltage 10.5 kV, 0.4 kV self-consumption

Temperature level secondary side 60/100°C

Power range 5-100%

Connection flow and return DN350

The EHK should have a primary and a secondary circuit connected to a heat exchanger.