Colombia's power system today
Demand, spot price, reservoirs and the climate signal behind them, with forecasts that show how sure we are.
Market data through Oct 25, 2026 · Hydrology through Oct 27, 2026
Daily briefing
Written by Gemini from the day's data
On Sunday, October 25, 2026, electricity demand reached 218.2 GWh, representing a +0.1 % change against the previous week, while the model expects about 216.5 GWh of demand a week from now. The spot price averaged 421 COP/kWh, marking a −14 % change in a week, and reservoir levels stood at 77.0 %, which is +0.9 points over the week. Thermal plants supplied 41 % of generation, and the ONI index was recorded at 2.16, indicating El Niño.
- Demand
- 218.2GWh/day+0.1 GWh/day vs 7 days earlieron Oct 25, 2026
- Spot price
- 421COP/kWh−67 COP/kWh vs 7 days earlieron Oct 25, 2026
- Reservoir level
- 77.0%+0.9 points vs 7 days earlieron Oct 27, 2026
- El Niño index (ONI)
- 2.16Strong El Niño3-month season centred on Aug 2026
Demand forecast
Next 30 days, with the range the model expects
- Observed
- Forecast (median)
- 80 % range (P10 to P90)
Next 30 days: the median runs from 216.5 to 253.4 GWh/day (mean 242.5). The 80 % range spans 211.1 to 265.1 GWh/day.
Show data tableHide data table
| Date | P10 (GWh/day) | P50 (GWh/day) | P90 (GWh/day) |
|---|---|---|---|
| Oct 26, 2026 | 239.9 | 245.1 | 254.5 |
| Oct 27, 2026 | 242.1 | 248.2 | 256.7 |
| Oct 28, 2026 | 241.2 | 248.8 | 257.4 |
| Oct 29, 2026 | 242.3 | 250.3 | 258.6 |
| Oct 30, 2026 | 244.1 | 250.9 | 261.5 |
| Oct 31, 2026 | 230.5 | 239.8 | 246.1 |
| Nov 1, 2026 | 211.1 | 216.5 | 224.9 |
| Nov 2, 2026 | 213.3 | 220.6 | 229.4 |
| Nov 3, 2026 | 238.7 | 245.6 | 254.4 |
| Nov 4, 2026 | 242.1 | 249.4 | 257.9 |
| Nov 5, 2026 | 243.4 | 251.4 | 259.9 |
| Nov 6, 2026 | 245.6 | 252.6 | 263.9 |
| Nov 7, 2026 | 234.0 | 241.1 | 249.7 |
| Nov 8, 2026 | 214.6 | 219.7 | 227.7 |
| Nov 9, 2026 | 239.7 | 246.8 | 257.7 |
| Nov 10, 2026 | 242.0 | 249.4 | 259.4 |
| Nov 11, 2026 | 242.2 | 250.3 | 260.0 |
| Nov 12, 2026 | 242.5 | 251.7 | 261.2 |
| Nov 13, 2026 | 244.1 | 252.8 | 264.2 |
| Nov 14, 2026 | 230.8 | 241.5 | 247.8 |
| Nov 15, 2026 | 211.7 | 217.6 | 225.7 |
| Nov 16, 2026 | 215.4 | 221.5 | 230.1 |
| Nov 17, 2026 | 239.8 | 247.3 | 255.8 |
| Nov 18, 2026 | 242.6 | 250.8 | 260.2 |
| Nov 19, 2026 | 243.5 | 252.2 | 262.0 |
| Nov 20, 2026 | 245.0 | 253.4 | 265.1 |
| Nov 21, 2026 | 233.3 | 241.9 | 249.4 |
| Nov 22, 2026 | 214.2 | 219.7 | 227.8 |
| Nov 23, 2026 | 239.7 | 247.9 | 257.2 |
| Nov 24, 2026 | 241.6 | 250.7 | 259.6 |
Generation mix
Share of the day's generation
- Hydro84 % a year ago49.4 %
- Thermal8 % a year ago40.6 %
- Solar7 % a year ago9.1 %
- Cogeneration1 % a year ago0.9 %
- Wind0 % a year ago0.0 %
- Other0 % a year ago0.0 %
Spot price forecast
Next 14 days, with the range the model expects.
- Observed
- Forecast (median)
- 80 % range (P10 to P90)
Next 14 days: the median runs from 364 to 504 COP/kWh (mean 437). The 80 % range spans 239 to 700 COP/kWh.
Show data tableHide data table
| Date | P10 (COP/kWh) | P50 (COP/kWh) | P90 (COP/kWh) |
|---|---|---|---|
| Oct 26, 2026 | 344 | 415 | 483 |
| Oct 27, 2026 | 348 | 409 | 483 |
| Oct 28, 2026 | 341 | 441 | 546 |
| Oct 29, 2026 | 328 | 456 | 575 |
| Oct 30, 2026 | 327 | 476 | 581 |
| Oct 31, 2026 | 300 | 411 | 551 |
| Nov 1, 2026 | 263 | 364 | 521 |
| Nov 2, 2026 | 241 | 396 | 590 |
| Nov 3, 2026 | 281 | 459 | 646 |
| Nov 4, 2026 | 281 | 478 | 674 |
| Nov 5, 2026 | 288 | 494 | 693 |
| Nov 6, 2026 | 287 | 504 | 700 |
| Nov 7, 2026 | 261 | 434 | 665 |
| Nov 8, 2026 | 239 | 383 | 638 |
Most unusual days
Highest severity across demand and price. Severity is how many robust standard deviations a day sits from its expected value.