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Monday, 31 May 2021

Daily statistics of the Spanish peninsular's electricity system

Definitive data to 14/11/2022 • 22:23:36

Daily energy balance (GWh) (1) Day Month %∆ Month Annual %∆ Annual Rolling year (2) %∆ Rolling year
Hydro 79 2.159 -24,5 17.194 11,6 32.419 9,8
Pumped storage (3) 5 239 -2,0 1.445 9,0 2.871 31,2
Nuclear 119 4.373 42,0 22.962 2,0 56.206 2,8
Coal 14 333 36,2 1.582 -41,8 3.661 -40,7
Combined cycle (4) 115 2.005 -0,6 9.794 -9,3 37.355 -21,4
Wind 107 4.621 18,6 27.440 26,0 59.460 16,0
Solar PV 64 2.340 46,4 7.388 39,5 17.018 58,8
Solar thermal 13 646 16,9 1.508 15,2 4.737 6,5
Other renewables (5) 12 390 0,9 1.895 8,3 4.617 18,3
Cogeneration (6) 72 2.204 5,7 10.879 -0,3 26.964 -3,0
Non-renewables waste (7) 5 171 22,4 851 11,8 1.986 3,2
Renewable waste (7) 2 53 72,2 291 30,5 674 0,8
Generation 606 19.533 14,0 103.229 8,9 247.968 3,0
Pumped storage consumption -2 -394 7,5 -2.475 1,5 -4.664 13,1
Balearic-Peninsula link (8) -4 -112 39,6 -602 14,6 -1.503 -4,5
Exchange balance (9) 48 269 -60,6 768 -80,5 119 -98,1
Demand (b.c) 648 19.296 11,1 100.919 5,4 241.920 0,2
Adjusted demand (10) - - 12,6 - 5,0 - 0,1
Transmission losses -9 -296 4,2 -1.912 17,8 -4.196 9,8
Demand (distribution) 639 19.000 11,2 99.008 5,2 237.724 0,1

Generation structure

31/05/2021
May
2021
Rolling year aggregate
  • No renewable:
    • Coal
    • Nuclear
    • Pumped storage
    • Combined cycle
    • Non-renewables waste
    • Cogeneration
  • Renewable:
    • Other renewables
    • Solar thermal
    • Hydro
    • Solar PV
    • Renewable waste
    • Wind

Renewable energy

Renewable energy (GWh) Day Month %∆ Month Annual %∆ Annual Rolling year (2) %∆ Rolling year
Total (11) 276 10.208 9,5 55.716 21,8 118.925 18,3

Maximum demand

Maximum Demand Day Month Year Historical
Instantaneous Peak Load (MW) 31.666 (13:38) 31.666 (13:38 - 31/05) 42.225 (14:05 - 08/01) 45.450 (18:53 - 17/12/2007)
Peak Load (MWh) 31.236 (14h) 31.236 (14h - 31/05) 41.483 (14h - 08/01) 44.876 (20h - 17/12/2007)
Daily demand (GWh) 648 663 (19/05) 835 (13/01) 906 (18/12/2007)

Hydraulic data

Hydraulic data for 31 of may of 2021

Hydroelectric reserves (GWh) Maximum capacity (A) Today (B) (B/A) % Δ Day 31/05/2020 (C) (C/A) % 01/01/2021 (D) (D/A) %
Annual regime 8.967 6.063 67,6 -20 7.442 83,0 5.578 62,2
Hyperannual regime 9.571 5.051 52,8 -13 5.526 57,7 3.851 40,2
Total 18.538 11.114 60,0 -33 12.968 70,0 9.430 50,9
Producible hydroelectric energy Day Month Index (month) % P> (12) Year Index (year) % P> (12) Rolling year (2) Index (rolling year) % P> (12)
GWh 46 1.974 0,6 93,1 18.889 1,0 50,8 30.564 1,0 44,7
  • Note: All variance percentages shown refer to the same period in the previous year.
  • (1) Allocation of production units according to primary fuel.
  • (2) Rolling year: cumulative value in the last 365 days, or 366 days in leap years.
  • (3) Pure pumped storage + mixed pumped storage estimate.
  • (4) Includes operation in open cycle mode.
  • (5) Includes biogas, biomass, marine energy and geothermal. The values of increase and rolling year include waste up until 31 December 2014.
  • (6) The increment and rolling year values include waste up to December 31, 2014.
  • (7) Generation included in other renewables and cogeneration on 12/31/2014.
  • (8) Positive value: incoming energy; negative value: outgoing energy.
  • (9) Positive value: import balance; negative value: export balance
  • (10) After factoring in the influence of seasonal and working patterns
  • (11) Includes hydro, wind, solar photovoltaic, solar thermal, other renewables and renewable waste.
  • (12) Percentage of probability of exceeding the index value.