Multifunctional Building Slezská

A multifunctional fully electrified building in Jeseník. It is an older building that underwent reconstruction in the mid-1990s.
Container Configuration with a Capacity of 576 kWh
Example of the MES battery storage function – consumption compensation and energy sales to the grid in the morning and evening hours with higher spot prices. Charging from the PV system and the grid during the day when spot prices are low

The usable floor area of the building is approximately 2000 m². The first floor is used as a tennis club facility (changing rooms, showers), reception, kitchen with restaurant, and archive. The second floor primarily houses office spaces, and the attic contains several residential units. The entire building is heated by electric direct heating, and hot water is provided by local electric boilers. The total annual electricity consumption is approximately 200 MWh, with a significant portion of this consumption occurring during the winter months.

Since the summer of 2023, a photovoltaic power plant with a total capacity of 32.2 kWp has been installed on the southeast-facing roof of the building.

In the autumn of 2023, a universal MES battery storage system in container configuration with a capacity of 576 kWh and a power output of 150 kW was added to the building. The main purpose of this storage system is to manage the surplus energy from the photovoltaic system and actively utilize spot electricity prices. Due to the relatively high energy consumption, cheaper energy from the distribution grid is usually accumulated during the night or midday hours, which is then used to offset consumption during the morning and evening peaks. When prices are favorable, energy is also sold back to the grid (limited by the reserved output of the production facility to approximately 35 kW).

Detailed monthly operational results for the year 2024

Period Total
Consumption
(kWh)		 Grid
Consumption
(kWh)		 PV
Production
(kWh)		 Supply
to Grid
(kWh)		 Grid
Consumption
(CZK)		 Supply
to Grid
(CZK)		 Electricity
Costs
(CZK)		 Achieved
Price
(CZK/kWh)
01/2024 36 527 35 963 573 9 140 691 12 140 679 3,85
02/2024 26 266 25 255 1 067 56 91 220 132 91 088 3,46
03/2024 25 104 23 448 1 960 304 83 393 570 82 823 3,29
04/2024 18 193 15 667 3 485 959 56 802 1 960 54 842 3,01
05/2024 12 584 9 559 4 233 1 208 35 644 2 318 33 326 2,65
06/2024 11 447 9 740 2 975 1 268 38 077 3 807 34 270 2,99
07/2024 11 251 8 531 4 195 1 475 33 557 4 116 29 441 2,61
08/2024 11 641 10 318 3 989 2 666 40 063 8 272 31 791 2,73
09/2024 12 821 10 830 3 050 1 059 44 444 3 960 40 484 3,16
10/2024 20 044 18 584 2 340 880 87 466 3 350 84 116 4,19
11/2024 31 609 30 726 1 356 473 149 064 3 832 145 232 4,59
12/2024 35 218 34 626 846 254 167 581 3 248 164 333 4,67
Total 252 705 233 247 30 069 10 611 968 002 35 577 932 425 3,69

Prices are listed without VAT

 

Detailed monthly operational results for the year 2025:

 

Period Total
Consumption
(kWh)		 Grid
Consumption
(kWh)		 PV
Production
(kWh)		 Supply
to Grid
(kWh)		 Grid
Consumption
(CZK)		 Supply
to Grid
(CZK)		 Electricity
Costs
(CZK)		 Achieved
Price
(CZK/kWh)
01/2025 36 946 36 301 1 075 430 161 848 2 789 159 059 4,30
02/2025 33 511 31 886 1 987 362 149 987 1 724 148 263 4,42
03/2025 24 743 23 047 2 746 1 050 86 165 3 670 82 495 3,33
04/2025 16 672 15 570 3 684 2 582 47 496 7 305 40 191 2,41
05/2025 14 755 14 053 3 706 3 004 48 134 8 564 39 570 2,68
06/2025 9 074 9 687 4 227 4 840 31 807 13 858 17 949 1,98
07/2025 8 665 7 334 3 834 2 503 35 194 7 539 27 655 3,19
08/2025 9 293 10 582 4 273 5 562 35 047 14 180 20 867 2,25
09/2025 11 040 12 346 2 654 3 960 45 628 13 542 32 086 2,91
10/2025 20 996 21 129 1 770 1 903 79 193 7 011 72 182 3,44
11/2025 24 942 24 212 1 225 495 101 043 2 133 98 910 3,97
12/2025 30 406 29 739 909 242 118 151 1 005 117 146 3,85
Total 241 043 235 886 32 090 26 933 939 693 83 320 856 373 3,55

Prices are listed without VAT

 

From April 2025 onward, in addition to standard algorithm-based control, a commercial flexibility provision mode has also been tested at the metering point. In this mode, the electricity supplier has the option to activate charging and discharging of the battery storage in order to optimize imbalances within its portfolio or to take advantage of trading opportunities in the energy market (e.g. the intraday market). Part of the resulting revenues is then paid by the supplier as remuneration for the provided flexibility; for the year 2025, this amounted to CZK 18,962 excluding VAT.

 


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