Slovakia — 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 Slovakia'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 2,653,153 1,947,972 140.24 273,190,089 1,825,359 143.31 261,586,579 142.52 11,603,510 68.8%
February 2,295,324 1,282,081 111.17 142,534,186 979,770 112.46 110,189,649 110.34 32,344,537 42.7%
March 2,243,679 1,245,572 123.34 153,627,096 931,791 119.86 111,683,810 113.72 41,943,286 41.5%
April 2,018,976 1,232,557 91.73 113,064,014 1,105,290 84.77 93,693,627 83.42 19,370,387 54.7%
May 2,010,251 1,095,449 104.79 114,791,346 984,376 88.18 86,801,281 96.96 27,990,065 49.0%
June 2,017,059 1,173,323 122.41 143,630,138 1,027,301 112.02 115,074,449 115.82 28,555,689 50.9%
July 2,008,349 1,459,394 131.93 192,533,813 1,279,537 120.51 154,196,448 118.60 38,337,364 63.7%
August 2,047,899 1,427,936 164.58 235,003,945 1,406,215 153.06 215,229,270 149.62 19,774,675 68.7%
September26.1% of hours 508,733 377,467 165.51 62,473,629 328,262 158.54 52,041,164 155.75 10,432,465 64.5%
Total 17,803,423 11,241,752 127.28 1,430,848,256 9,867,900 121.66 1,200,496,279 118.37 230,351,976 55.4%

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

230,351,976 € for 1,373,852 MWh that stayed in the country works out at 167.67 € per megawatt-hour, in a month that averaged 118.37.

  • Energy that stayed, at the month's average price −162,617,256 70.6%
  • What came in arrived above that average 32,473,278 -14.1%
  • What went out left below it −100,207,999 43.5%

The first line is energy the country needed and got. The other two — 67,734,721 € 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.

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

Hungary

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

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 1,487,912 139.66 207,807,063 0 — 0 207,807,063
February 921,743 111.45 102,724,852 13,149 105.89 1,392,373 101,332,479
March 999,123 127.63 127,516,768 13,158 35.82 471,292 127,045,476
April 1,163,145 94.56 109,991,284 50,707 29.63 1,502,297 108,488,986
May 995,734 107.04 106,585,610 71,028 63.64 4,520,373 102,065,237
June 925,082 125.59 116,184,275 24,476 68.35 1,672,831 114,511,444
July 1,243,804 132.49 164,795,809 1,847 57.00 105,257 164,690,552
August 1,177,889 165.48 194,916,571 13,189 98.99 1,305,594 193,610,977
September 324,155 166.07 53,833,280 3,734 81.08 302,730 53,530,550
Total 9,238,588 128.20 1,184,355,512 191,289 58.93 11,272,749 1,173,082,764

Czechia

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

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 386 155.61 60,105 1,171,403 148.01 173,381,073 −173,320,969
February 51,402 94.33 4,848,531 653,986 115.31 75,409,553 −70,561,022
March 71,880 44.55 3,202,045 767,280 127.24 97,627,070 −94,425,024
April 64,322 36.61 2,354,702 815,026 91.05 74,207,231 −71,852,528
May 83,198 69.64 5,793,863 651,157 93.67 60,995,912 −55,202,049
June 61,566 82.09 5,053,733 641,269 119.03 76,328,379 −71,274,646
July 18,893 87.41 1,651,496 840,956 124.66 104,833,777 −103,182,281
August 43,215 112.76 4,873,015 930,101 162.73 151,356,615 −146,483,600
September 13,310 99.71 1,327,209 222,355 168.00 37,355,643 −36,028,434
Total 408,173 71.45 29,164,699 6,693,531 127.21 851,495,253 −822,330,554

Poland

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

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 0 217.38 43 653,956 134.88 88,205,506 −88,205,462
February 20,019 115.30 2,308,151 304,902 107.20 32,685,825 −30,377,674
March 112 78.37 8,805 96,404 104.22 10,047,584 −10,038,779
April 1,720 144.88 249,197 239,557 75.07 17,984,099 −17,734,902
May 9,818 168.75 1,656,857 260,255 81.43 21,193,502 −19,536,645
June 15,586 187.95 2,929,382 296,597 105.40 31,262,464 −28,333,083
July 7,019 168.85 1,185,133 389,941 114.59 44,684,984 −43,499,851
August 9,931 245.18 2,434,815 401,932 137.78 55,377,756 −52,942,941
September 1,508 284.31 428,790 96,882 141.48 13,707,226 −13,278,436
Total 65,714 170.45 11,201,173 2,740,429 115.00 315,148,945 −303,947,773

Ukraine

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

Month Physical exports MWh €/MWh € Physical imports MWh €/MWh € Difference €
January 459,674 142.11 65,322,878 0 — 0 65,322,878
February 288,917 113.02 32,652,652 7,732 90.78 701,898 31,950,754
March 174,456 131.26 22,899,478 54,948 64.39 3,537,866 19,361,613
April 3,371 139.10 468,832 0 — 0 468,832
May 6,699 112.70 755,016 1,937 47.24 91,494 663,522
June 171,089 113.76 19,462,748 64,958 89.45 5,810,775 13,651,973
July 189,678 131.28 24,901,374 46,793 97.72 4,572,429 20,328,945
August 196,901 166.48 32,779,544 60,992 117.87 7,189,305 25,590,239
September 38,494 178.84 6,884,351 5,291 127.69 675,565 6,208,785
Total 1,529,278 134.79 206,126,872 242,651 93.05 22,579,333 183,547,539

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.