Slovenia — physical cross-border flows, 2026

Every month of the year, every border, in energy and in money. Flows are measured; each megawatt-hour is valued at Slovenia's own day-ahead price for the quarter-hour it actually crossed in.

Month by month

All borders together, with consumption for scale.

Month Consumption, MWh Physical exports Physical imports Zone price, €/MWh Difference € Import ÷ consumption
MWh€/MWh€ MWh€/MWh€
January 1,374,085 769,413 132.94 102,284,693 683,546 136.67 93,417,065 140.83 8,867,628 49.7%
February 1,136,001 938,998 102.07 95,844,350 539,403 102.50 55,287,322 109.17 40,557,028 47.5%
March 1,179,581 1,200,108 106.40 127,696,724 633,074 99.55 63,024,907 110.85 64,671,817 53.7%
April 1,039,228 1,123,709 89.06 100,079,074 706,703 85.24 60,241,425 88.79 39,837,649 68.0%
May 1,040,158 1,246,476 100.14 124,826,506 713,179 91.33 65,134,869 102.46 59,691,637 68.6%
June 1,064,004 1,245,449 106.96 133,212,823 733,912 101.60 74,565,478 114.45 58,647,345 69.0%
July 1,084,431 1,237,032 119.05 147,263,255 853,824 117.82 100,594,879 121.08 46,668,376 78.7%
August 1,037,032 909,235 145.09 131,924,489 791,355 148.76 117,725,402 152.09 14,199,088 76.3%
September35.1% of hours 383,780 422,460 162.59 68,686,654 296,373 160.90 47,686,722 170.16 20,999,932 77.2%
Total 9,338,300 9,092,879 113.48 1,031,818,568 5,951,370 113.87 677,678,068 120.28 354,140,500 63.7%

Consumption is measured separately, as the hourly average power summed over the month — not by adding up readings, since sources publish at different rates. The last column puts imports next to it for scale; it is not a dependency figure, because part of what enters passes straight through to another neighbour.

Where the difference comes from

354,140,500 € for 3,141,509 MWh that stayed in the country works out at 112.73 € per megawatt-hour, in a month that averaged 120.28.

  • Energy that stayed, at the month's average price −377,865,029 106.7%
  • What came in arrived above that average −38,160,794 10.8%
  • What went out left below it 61,885,323 -17.5%

The first line is energy the country needed and got. The other two — 23,724,529 € together — come not from how much moved but from when: cheap hours to sell in, expensive hours to buy in. That is the price of a timing mismatch, not a loss.

Official validation

The measured physical flow, checked against ANRE's published commercial trade.

Month Physical net, MWh Commercial net, MWh Difference, MWh Status
January ——— AWAITING OFFICIAL ANRE DATA
February ——— AWAITING OFFICIAL ANRE DATA
March ——— AWAITING OFFICIAL ANRE DATA
April ——— AWAITING OFFICIAL ANRE DATA
May ——— AWAITING OFFICIAL ANRE DATA
June ——— AWAITING OFFICIAL ANRE DATA
July ——— AWAITING OFFICIAL ANRE DATA
August ——— AWAITING OFFICIAL ANRE DATA
September ——— AWAITING OFFICIAL ANRE DATA

Gross volumes differ by design: the official indicators include transits, and a transit is counted once entering and once leaving, while a physical border sees it only once. Net figures converge, because transits cancel out — which is why the comparison is made on the net.

The percentage relates the difference to the month's commercial net. In a month with a small net, the same difference in MWh yields a larger percentage — which is why the difference is always shown in MWh as well.

ANRE publishes these exchanges as a physical balance in GWh. It publishes no import or export value and no average price per direction, so no money comparison is possible.

Physical cross-border flows and commercial electricity trades measure different phenomena. ANRE data is shown as an independent official benchmark and should not be interpreted as an exact reconciliation.

Border by border

Italy

Month by month, Slovenia's side of this border.

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 573,321 120.47 69,067,849 49,227 166.03 8,173,019 60,894,831
February 776,837 100.22 77,853,132 6,684 128.31 857,615 76,995,517
March 997,915 108.32 108,094,111 2,152 102.00 219,495 107,874,616
April 855,800 98.67 84,439,922 12,348 23.89 294,998 84,144,923
May 998,925 109.27 109,147,612 12,465 -17.05 −212,496 109,360,108
June 972,023 108.52 105,484,634 10,904 5.00 54,542 105,430,092
July 1,048,370 119.51 125,285,539 2,233 120.84 269,840 125,015,699
August 562,166 135.83 76,358,161 19,732 153.49 3,028,628 73,329,533
September 355,732 164.57 58,541,545 269 248.59 66,857 58,474,689
Total 7,141,089 114.03 814,272,505 116,013 109.92 12,752,498 801,520,007

Austria

Month by month, Slovenia's side of this border.

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 38,723 113.23 4,384,598 327,093 155.76 50,946,515 −46,561,916
February 105,587 94.27 9,953,214 138,285 118.32 16,362,068 −6,408,854
March 148,125 85.66 12,687,732 161,591 114.87 18,561,543 −5,873,811
April 54,109 51.43 2,782,817 407,003 92.00 37,445,995 −34,663,179
May 69,979 81.06 5,672,648 358,264 95.03 34,044,712 −28,372,064
June 37,090 84.92 3,149,600 438,601 110.29 48,373,636 −45,224,036
July 29,368 109.06 3,202,846 446,549 120.58 53,845,266 −50,642,420
August 54,668 127.88 6,990,911 489,523 159.71 78,183,651 −71,192,740
September 12,419 124.96 1,551,916 165,951 170.93 28,365,286 −26,813,370
Total 550,068 91.58 50,376,282 2,932,860 124.84 366,128,671 −315,752,389

Croatia

Month by month, Slovenia's side of this border.

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 114,357 176.88 20,227,724 220,663 115.16 25,411,011 −5,183,286
February 19,465 150.16 2,922,744 333,886 97.91 32,690,596 −29,767,852
March 42,985 117.75 5,061,482 286,672 99.25 28,451,182 −23,389,700
April 201,932 55.07 11,120,471 114,260 81.09 9,265,406 1,855,065
May 152,808 48.33 7,384,611 178,118 97.96 17,447,832 −10,063,220
June 227,108 101.43 23,035,590 110,472 95.27 10,524,932 12,510,658
July 157,157 116.85 18,363,498 129,484 125.05 16,192,260 2,171,237
August 277,652 162.05 44,993,147 119,989 134.85 16,180,988 28,812,159
September 54,034 158.56 8,567,327 49,108 145.34 7,137,438 1,429,888
Total 1,247,496 113.57 141,676,594 1,542,651 105.86 163,301,644 −21,625,050

Hungary

Month by month, Slovenia's side of this border.

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 43,012 200.05 8,604,521 86,563 102.66 8,886,521 −281,999
February 37,109 137.84 5,115,260 60,549 88.80 5,377,043 −261,783
March 11,083 167.23 1,853,399 182,660 86.46 15,792,687 −13,939,288
April 11,868 146.27 1,735,865 173,091 76.46 13,235,025 −11,499,161
May 24,763 105.87 2,621,635 164,333 84.31 13,854,822 −11,233,187
June 9,229 167.19 1,542,999 173,936 89.76 15,612,368 −14,069,369
July 2,138 192.45 411,373 275,558 109.91 30,287,513 −29,876,140
August 14,749 242.88 3,582,271 162,110 125.42 20,332,135 −16,749,864
September 275 94.03 25,866 81,045 149.51 12,117,141 −12,091,276
Total 154,226 165.30 25,493,188 1,359,846 99.64 135,495,255 −110,002,067

Method

Not an invoice. Cross-border electricity is not sold country to country: the markets are coupled and the physical flow is the outcome of a shared auction. These figures value the measured flow at this zone's own day-ahead price, so both directions can be compared on the same scale.

Flows are measured, quarter-hour by quarter-hour; hourly borders are spread across the four quarters they cover, so every megawatt-hour meets the price that was actually in force. Energy entering the country is not the same as energy consumed here — some of it passes through.

A country between two others carries energy that is neither produced nor consumed there. Energy entering is not energy used.