Power Markets Weekly
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VOL 13 | NUM 4 | 14 August 2026
Power Markets Weekly
CHILE  |  3 - 9 August 2026
Power Markets Weekly is a brief weekly review of the electric market operation in Chile, Mexico, Iberia, France and Italy. If you are not a subscriber, please feel free to subscribe here
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BESS and dam generation set new hourly records
Glossary
Global SEN operation
The average price at Polpaico was USD 24.4/MWh, 19% lower than last week and 35% lower than the same week last year.
Marginal cost evolution in Polpaico during past years
Marginal cost evolution in Polpaico during past years
In this week’s generation mix, dam and run-of-river generation increased their shares by 2.9 pp and 0.4 pp, respectively. Solar rose by 2.5 pp and BESS participation by 0.7 pp, while wind decreased by 2.4 pp. Among thermal sources, coal fell by 2.4 pp and gas by 1.6 pp.
BESS injections peaked on Saturday at 9 PM, accounting for 26.0% of system output and setting a new record of 2.7 GW.
BESS charging reached a new record of 3.6 GW on Sunday at 11 AM.
Combined solar and wind participation peaked on Sunday at 1 PM, reaching 62.0% of system output, when total system output was 10.6 GW.
Dam generation also reached a new record of 3.3 GW on Wednesday at 6 AM.
The system’s peak output occurred on Monday at 12 PM, reaching 11.9 GW.
Generation Mix
Generation Mix
Variation
Variation
Power range by energy sources (average prices)
Power range by energy sources (average prices)

Learn more about this chart

Generation evolution
Generation evolution
Geothermal
Cogeneration
Biomass
Coal
Gas
Oil
BESS
Dam
Run-of-river
Wind
PV Solar
CSP
Prices were generally coupled across reference nodes. The 500 kV Charrúa - Ancoa line experienced congestion for some hours each day from Monday through Friday, keeping prices of USD 0/MWh at Charrúa and south of it. On Tuesday and Wednesday, congestion in the 220 kV Cautín - Río Toltén line caused prices in Puerto Montt to rise above those in the rest of the system. The same occurred on Friday due to congestion in the 220 kV Lastarria - Ciruelos line.
Oil-fired plants set the marginal price in Puerto Montt on Tuesday, Wednesday, and Friday. The highest reference price was USD 414.0/MWh in Puerto Montt at 11 AM on Tuesday, set by the oil-fired Antilhue plant, based on preliminary CEN data.
Marginal cost evolution
Marginal cost evolution
Crucero
USD 25.7/MWh
Cardones
USD 24.8/MWh
Pan de Azúcar
USD 24.3/MWh
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Polpaico
USD 24.4/MWh
Charrúa
USD 15.3/MWh
Puerto Montt
USD 44.9/MWh
Solar and Wind production & BESS dispatch
Solar generation increased by 15.9% | 40.9 GWh relative to last week. The highest solar plant factor was 17.9% in Cardones, while the lowest was 9.0% in Charrúa. The system-wide solar plant factor was 13.4%.
Wind generation decreased by 14.0% | 43.6 GWh. The highest wind plant factor was 30.9% in Puerto Montt, while the lowest was 7.0% in Cardones. The system-wide wind plant factor was 23.3%.
BESS injections increased by 9.4% | 11.0 GWh, with the largest volume recorded in the Crucero zone, totaling 91.2 GWh.
Curtailment reached 11.7% | 35.8 GWh for wind and 11.2% | 45.9 GWh for solar, resulting in a combined system-wide curtailment rate of 11.2%, up 0.7 pp from last week.
Hourly Solar production
Hourly Solar production
Hourly Wind production
Hourly Wind production
Hourly BESS dispatch
Hourly BESS dispatch
PV capture price
Crucero
USD 1.6/MWh
Cardones
USD 1.1/MWh
Pan de Azúcar
USD 0.9/MWh
​
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Polpaico
USD 0.6/MWh
Charrúa
USD 0.4/MWh
Puerto Montt
USD 59.1/MWh

Energy weighted average spot price using PV production by zone

Wind capture price
Crucero
USD 29.0/MWh
Cardones
USD 23.6/MWh
Pan de Azúcar
USD 27.9/MWh
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Polpaico
USD 31.8/MWh
Charrúa
USD 12.3/MWh
Puerto Montt
USD 38.4/MWh

Energy weighted average spot price using wind production by zone

BESS discharge capture price
Crucero
USD 40.2/MWh
Cardones
USD 40.9/MWh
Pan de Azúcar
USD 37.6/MWh
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​
Polpaico
USD 40.7/MWh
Charrúa
USD 35.5/MWh

Energy weighted average spot price using BESS discharge by zone

BESS charge capture price
Crucero
USD 1.1/MWh
Cardones
USD 1.0/MWh
Pan de Azúcar
USD 0.2/MWh
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​
Polpaico
USD 3.4/MWh
Charrúa
USD 4.0/MWh

Energy weighted average spot price using BESS charge (both from co-located power plant and from grid) by zone

BESS charge capture price
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