Mariupol

Interconnection of the DH network and utilisation of alternative waste heat resource from one of city’s metallurgical plants

Location: Mariupol
Programme: SUDH
Project status: Feasibility Study
Investment: Approx. 5 MEUR
Payback period: Approx. 5 years
Reduced gas consumption: Up to 8 million m3/year
Reduced

 CO

emissions:
Approx. 16 000 tonnes/year

Mariupol, with 450 000 inhabitants, is located about 800 km South-East of Kyiv at the shore of the Azov Sea. It is the second largest citiy of Donetsk oblast and one of the top-10 largest Ukrainian cities and an important industrial centre of Ukraine.

The Mariupol DH company Mariupolteplomerezha is currently providing district heating (DH) to more than 250 000 residents. Domestic hot water (DHW) is provided to about 100 000 customers only during the heating season.

Mariupol city sees DH as a strategic source of heat for its citizens. Since 2007, the City Council has banned disconnection of customers from the DH network.

Mariupol Demonstration Project

The main idea of the project is to use alternative waste heat resource from one of the metallurgical plants as baseload in the DH system. The project proposes to utilise heat potential from steam, generated either from exhaust gases or from furnace cooling. Today, the excess of steam is released to the atmosphere, while its heat potential can be captured to generate district heat. This will require the DH Company to install necessary equipment capable to generate heat from the available alternative resource. This will substitute use of natural gas without adding any new fuel to the system.

In the area near the metallurgical plants, the district heating systems should be interconnected to increase their size and therefore allow utilisation of the full potential of the alternative heat source. The proposed interconnection of district heating systems could be the first step for a future integration of larger non-fossil heat sources.

The ongoing feasibility study determines technical, environmental and financial feasibility of the project idea, as well as further clarifies the project composition.

Mariupol Demonstration Project – Details

As a result of a pre-study, the following components of an investment project have been preliminarily identified for Mariupol:

  1. Utilisation of alternative heat source:

Option 1: Utilisation of waste heat from the industrial plant for three interconnected districts in the Eastern part of the city (13 MW) and a Flue Gas Condenser (2 MW);

Option 2: Utilisation of waste heat from the industrial plant for two interconnected districts in the Northern part of the city (7 MW).

  1. Upgrading and interconnection of two districts in the Western part of the city (approx. 2 km).
  2. Other project components may be added during the feasibility stage.

Once implemented, depending on the project option, the project is expected to benefit the local community by:

  • Saving approximately 50-70 GWh heat from natural gas;
  • Saving approximately 13 000-16 000 tonnes CO2/year.

According to preliminary estimates, the payback period is about five years for both options.

The ongoing feasibility study determines technical, environmental and financial feasibility of the project idea, as well as further clarifies the project composition.

Current status

Preparation of feasibility study (started in June 2020).