Electrical power audit

Electricity audit is an analysis of the possibilities of reducing the energy consumption of electrical appliances and elElectricity audit is the analysis of the possibilities to reduce the energy consumed by electrical appliances and installations which operate in buildings. The analyzed equipment includes i.a.: transformers, motors, infrastructure media pumps, power grids, compressed air systems and lighting.

Purpose and scope of electrical power audit

As a part of the study, we prepare a concept of optimization of electricity consumption in internal transmission networks. Precise measurements are performed with the use of specialized meters- these are the basis for power distribution assessment which, in turn, makes it possible to build a baseline electricity consumption profile at the plant / network balance limit and to identify the points with increased energy consumption or reduced energy quality points, and further to determine distribution losses.

Scope of research and analysis:

  • analysis of the power supply system, including the power distribution per individual receiver currently applied,
  • analysis of the compressed air production system,
  • analysis of the ventilation and air conditioning systems (control and adjustment),
  • analysis of the extraction systems installed over the stations (control and adjustment),
  • analysis of the losses on individual components of the distribution system,,
  • analysis of the efficiency of a transformer (mobility measurements),
  • analysis of the technical condition of switchboards, including thermal imaging,
  • analysis of the energy security of the installation (including power supply security),
  • analysis of the lighting installation.

Measurements for the above specified scope:

  • transformer losses measurement,
  • measurements of the efficiency of air compressors and of the air leakage of compressed air systems (using a compressed air flow meter),
  • measurement of electrical processes of propulsion systems,
  • measurements of energy consumption and illumination,
  • measurements of power distribution and quality of electricity.

The summary of the audit includes the presentation of economic effects achieved through implemented changes, together with approximate costs of recommended implementations and savings resulting from the upgraded system operation.

Types of modernization which have been so far implemented by DB Energy:

Investment Energy savings [MWh] White Certificates [toe] Savings [USD/Y] Investment costs [USD] SPBT [Y]
Modernization of the compressed air system 13 049.152 1 060.544 1 222 502.59 1 705 658.92 1.4
Modernization of drives (fans, pumps, etc.) 4 950.759 711.937 372 230.73 987 154.96 2.7
Modernization of the lighting 53 826.401 12 933.444 4 563 755.31 15 736 507.90 3.4

Modernization of the compressor room 7 664.873 670.480 805 137.25 1 695 022.43 2.1
Improvement of passive power control 895.426 238.244 1 778 689.70 3 477 431.16 2.0
Modernization of transformer stations and distribution systems 12 854.333 2 098.380 1 807 575.80 3 185 802.92 1.8
Others 1 216.506 152 306.49 273 933.31 1.8
Total 94 457.450 17 713.029 10 702 197.85 27 061 511.61 2.5

Overall, in consequence of the audit recommendations within the scope of electrical power, DBE's clients reduced their energy consumption by approximately 94 GWh and thus achieved the average annual savings of nearly USD 10.5 million. The total payback period covering all investments slightly exceeded 2.5 years.

DB Energy

Complex management of an energy efficiency improvement process including the designing phase, financing, implementation of energy-saving projects

Skilled engineers with broad experience in managing the process of energy efficiency improvement for the industry

Guaranteed reduction of energy consumption while implementing a project with DB Energy

Substantial effectiveness proved by savings generated by clients and the number of issued energy efficiency certificates (the white certificates) – we have prepared the documentation in order to acquire the white certificates of more than 450k toe which accounts for our leading position on the market

Practical solutions – our projects are bespoke and adjusted to the profile and expectations of a client

Advanced measurement infrastructure – with all measurements types required in the energy efficiency analysis, including the proprietary DiagSYS system