Imbalance prices

An imbalance price is applied if an imbalance is found between injections and offtakes in an Access Responsible Party’s balance area.

According to the Federal Grid Code, an ARP is obliged to provide and use all reasonable means to be in balance on a quarter-hourly basis. A tariff for balancing energy (or ‘imbalance price’) is applied when an imbalance between injection and offtake is found in an ARP’s balance area.

An ARP has the possibility to participate in real-time to the global objective to contain the balance in the Belgian regulation zone by deviating from its balance in its balance area on the condition that he has the means to at any time restore its balance in real-time. Please refer to the ARP contract (specifically article 10.1 and 10.2) for more information.

Imbalance price indicator and validated imbalance price
When the imbalance prices are published at the quarter-hour notice they are not yet validated and thus can only be used as an indication for the imbalance price. Only after validation of the prices, the published prices can be used for invoicing purposes.

Using nominations and measurement data, Elia monitors all access responsible parties (ARPs) to make sure they comply with their quarter-hourly balance obligation.

A tariff for balancing energy (or ‘imbalance price’) is applied when an imbalance between injection and offtake is found in an ARP’s balance area.

Important disclaimer: When a strategic reserve volume is activated that is bigger than 0 MW, the columns alpha, MIP and MDP are not used for the calculation of the imbalance prices (POS and NEG), when an activation of strategic reserve is on-going and the activated volume is bigger than 0 MW. Prices will be displayed in red during an SR activation. To understand the exact formula behind the calculus of the imbalance prices during an SR activation, please consult §6.7.2 of the Functioning Rules.

History imbalance price data

Daily imbalance price data



Non validated data for 17/11/2017



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Quarter NRV (MW) SI (MW) α (€/MWh) MIP (€/MWh) MDP (€/MWh) SR (€/MWh) SI < -I C(MW) POS (€/MWh) NEG (€/MWh)
00:00 > 00:15 48,338  -123,415  0,00  84,39  3,60 84,39 84,39
00:15 > 00:30 35,871  -22,894  0,00  84,39  3,60 84,39 84,39
00:30 > 00:45 -98,812  125,208  0,00  84,39  3,60 3,60 3,60
00:45 > 01:00 -124,631  48,828  0,00  84,39  3,60 3,60 3,60
01:00 > 01:15 61,729  -138,000  0,00  84,39  3,60 84,39 84,39
01:15 > 01:30 -75,390  99,826  0,00  84,39  3,60 3,60 3,60
01:30 > 01:45 -115,966  110,859  0,00  84,39  3,60 3,60 3,60
01:45 > 02:00 -22,435  35,375  0,00  84,39  3,60 3,60 3,60
02:00 > 02:15 94,751  -99,935  0,00  84,39  0,00 84,39 84,39
02:15 > 02:30 -37,686  66,437  0,00  84,39  3,60 3,60 3,60
02:30 > 02:45 -96,496  94,717  0,00  84,39  3,60 3,60 3,60
02:45 > 03:00 -72,386  85,529  0,00  84,39  3,60 3,60 3,60
03:00 > 03:15 -9,927  12,130  0,00  76,81  3,60 3,60 3,60
03:15 > 03:30 -4,063  24,028  0,00  76,81  3,60 3,60 3,60
03:30 > 03:45 -12,684  12,639  0,00  76,81  3,60 3,60 3,60
03:45 > 04:00 -33,101  -10,851  0,00  76,81  3,60 3,60 3,60
04:00 > 04:15 7,944  53,523  0,00  76,81  3,60 76,81 76,81
04:15 > 04:30 17,990  -5,083  0,00  76,81  3,60 76,81 76,81
04:30 > 04:45 -2,967  0,935  0,00  76,81  3,60 3,60 3,60
04:45 > 05:00 51,868  -87,123  0,00  76,81  3,60 76,81 76,81
05:00 > 05:15 26,540  54,974  0,00  84,39  3,60 84,39 84,39
05:15 > 05:30 -7,746  8,191  0,00  84,39  3,60 3,60 3,60
05:30 > 05:45 42,286  -46,100  0,00  84,39  3,60 84,39 84,39
05:45 > 06:00 40,336  -56,879  0,00  84,39  3,60 84,39 84,39
06:00 > 06:15 -87,143  195,447  0,45  84,39  3,60 3,15 3,60
06:15 > 06:30 28,541  -26,752  0,00  84,39  3,60 84,39 84,39
06:30 > 06:45 131,288  -180,850  0,73  84,39  3,60 84,39 85,12
06:45 > 07:00 224,526  -331,876  1,59  84,39  0,00 84,39 85,97
07:00 > 07:15 170,319  19,723  0,00  112,85  3,60 112,85 112,85
07:15 > 07:30 39,105  -195,988  1,88  84,39  3,60 84,39 86,27
07:30 > 07:45 227,746  -220,544  2,27  112,85  3,60 112,85 115,12
07:45 > 08:00 188,467  -162,591  2,46  112,85  3,60 112,85 115,31
08:00 > 08:15 99,382  -82,772  0,00  113,32  3,60 113,32 113,32
08:15 > 08:30 87,791  -94,320  0,00  84,39  3,60 84,39 84,39
08:30 > 08:45 150,691  -242,530  2,49  84,39  0,00 84,39 86,88
08:45 > 09:00 185,443  -222,695  1,98  84,39  3,60 84,39 86,37
09:00 > 09:15 129,624  -249,631  2,50  84,39  0,00 84,39 86,89
09:15 > 09:30 91,317  -49,951  0,00  108,14  3,60 108,14 108,14
09:30 > 09:45 24,957  -16,309  0,00  108,14  3,60 108,14 108,14
09:45 > 10:00 62,941  -50,499  0,00  108,14  3,60 108,14 108,14
10:00 > 10:15 -23,612  107,067  0,00  108,14  3,60 3,60 3,60
10:15 > 10:30 -161,740  227,984  2,00  84,39  3,60 1,61 3,60
10:30 > 10:45 -154,076  211,364  1,88  84,39  3,60 1,72 3,60
10:45 > 11:00 -152,012  161,467  1,68  84,39  3,60 1,92 3,60
11:00 > 11:15 -114,817  103,428  0,00  84,39  3,60 3,60 3,60
11:15 > 11:30 -108,820  142,216  1,40  84,39  3,60 2,20 3,60
11:30 > 11:45 -173,289  175,373  1,65  84,39  3,60 1,95 3,60
11:45 > 12:00 -124,729  169,987  1,87  84,39  3,60 1,73 3,60
12:00 > 12:15 50,630  -119,803  0,00  84,39  3,60 84,39 84,39
12:15 > 12:30 -39,543  34,772  0,00  84,39  3,60 3,60 3,60
12:30 > 12:45 -40,473  30,460  0,00  84,39  3,60 3,60 3,60
12:45 > 13:00 164,059  -220,593  1,30  84,39  27,99 84,39 85,69
13:00 > 13:15 166,424  -243,783  1,70  84,39  27,92 84,39 86,09
13:15 > 13:30 243,375  -230,696  1,98  84,39  0,00 84,39 86,37
13:30 > 13:45 157,454  -135,421  0,00  84,39  0,00 84,39 84,39
13:45 > 14:00 112,977  -127,287  0,00  84,39  3,60 84,39 84,39
14:00 > 14:15 -201,839  247,875  2,16  0,00  3,60 1,44 3,60
14:15 > 14:30 -91,967  91,849  0,00  84,39  3,60 3,60 3,60
14:30 > 14:45 24,820  -14,395  0,00  84,39  3,60 84,39 84,39
14:45 > 15:00 5,264  3,412  0,00  84,39  3,60 84,39 84,39
15:00 > 15:15 118,260  -298,840  2,06  84,39  0,00 84,39 86,45
15:15 > 15:30 92,169  -103,255  0,00  84,39  3,60 84,39 84,39
15:30 > 15:45 98,408  -100,691  0,00  84,39  3,60 84,39 84,39
15:45 > 16:00 81,938  -90,367  0,00  84,39  0,00 84,39 84,39
16:00 > 16:15 127,109  -186,890  1,35  84,39  3,60 84,39 85,74
16:15 > 16:30 46,923  -70,086  0,00  84,39  3,60 84,39 84,39
16:30 > 16:45 82,153  -131,109  0,00  84,39  3,60 84,39 84,39
16:45 > 17:00 135,944  -216,734  1,85  84,39  3,60 84,39 86,24
17:00 > 17:15 -53,729  124,694  0,00  84,39  3,60 3,60 3,60
17:15 > 17:30 88,802  -155,585  1,35  84,39  3,60 84,39 85,74
17:30 > 17:45 201,198  -249,183  1,78  116,54  3,60 116,54 118,32
17:45 > 18:00 182,217  -188,226  2,01  116,54  3,60 116,54 118,55
18:00 > 18:15 177,096  -173,591  1,97  139,15  3,60 139,15 141,12

There is a risk of an imbalance price of 4500€/MWh if:

  • A need of strategic reserve is present (grey zone) and a SR unit is running;
  • SI < -I C during two consecutive quarter hours.

For more information, please consult the Functioning Rules of Strategic Reserve.

Evolutions

IGCC As of 10 January 2012,

Elia participates in IGCC (International Grid Control Cooperation). The exchanged volumes and prices will be published on the page Using regulation capacity. Click here to learn more about the balancing mechanism.

Incompressibility As of 29 June 2012,

A downwards activation of the emergency contract at the request of Elia is reflected in the imbalance prices at the minimum of -100 €/MWh and the contractual activation price. Click here to learn more about this decision and the balancing mechanism.

Abbreviations

NRV (Net Regulation Volume)

the net regulation volume is calculated for each quarter-hour using the difference between the sum of the volumes of all upward regulations and the sum of the volumes of all downward regulations requested by Elia

SI (System Imbalance)

the system imbalance is calculated for each quarter-hour using the difference between the Area Control Error (ACE) and the NRV

α

additional incentive applied on top of the regulation costs in cases of major system imbalances.

MIP

the highest price paid by Elia for upward regulation during the quarter-hour in question

MDP

the lowest price received by Elia for downward regulation during the quarter-hour in question

POS

tariff applicable for a positive imbalance

NEG

tariff applicable for a negative imbalance

SR

Strategic Reserve price when there is an volume of Strategic Reserve activated in the system >= 0MW

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