Portugal electricity prices in September 2025

Every day of September 2025 in Portugal: the average, lowest and highest wholesale price, negative-price hours, and how the month compares with the one before and with last year.

In September 2025, the wholesale market price in Portugal averaged €0.064 per kWh. The cheapest day was 6 September 2025 (€0.028), the most expensive 18 September 2025 (€0.097); the price was below zero for 11 hours.

Daily wholesale market prices in Portugal, September 2025 (€/kWh)
DateAverageLowHigh
1 September 20250.0370.0000.100
2 September 20250.0640.0040.160
3 September 20250.0620.0000.133
4 September 20250.0560.0020.113
5 September 20250.0630.0030.107
6 September 20250.028−0.0010.075
7 September 20250.0320.0000.112
8 September 20250.0760.0270.108
9 September 20250.0640.0090.120
10 September 20250.0640.0000.105
11 September 20250.0590.0000.140
12 September 20250.0730.0040.143
13 September 20250.0730.0000.106
14 September 20250.055−0.0000.126
15 September 20250.0670.0030.124
16 September 20250.0750.0060.199
17 September 20250.0860.0150.215
18 September 20250.0970.0440.200
19 September 20250.0900.0310.125
20 September 20250.0690.0010.111
21 September 20250.044−0.0010.086
22 September 20250.043−0.0000.109
23 September 20250.0520.0000.105
24 September 20250.0480.0010.116
25 September 20250.0800.0200.175
26 September 20250.0920.0220.160
27 September 20250.0720.0060.116
28 September 20250.0480.0090.074
29 September 20250.0590.0220.133
30 September 20250.0830.0220.199

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