Monthly report · day-ahead marketElectricity prices in Portugal, September 2025
In September 2025, electricity on the day-ahead market in Portugal cost an average of €0.061/kWh (€61.19/MWh); with taxes, network charges and a sample supplier margin, the estimated final price was around €0.175/kWh.
That is 11% less than in August 2025 and 17% less than in September 2024.
The cheapest day was Saturday, 6 September 2025, averaging €0.027/kWh; the most expensive was Thursday, 18 September 2025 at €0.097/kWh.
The lowest price came on 6 September 2025 at 13:00 (-€0.001/kWh), the highest on 17 September 2025 at 20:00 (€0.215/kWh). In total, prices were below zero for 14 hours.
On an average day, the cheapest three hours were 12:00–15:00. Weekends were on average 24% cheaper than weekdays.
Compared with
- Previous month (August 2025)
- €0.069 ▼
- Same month last year
- €0.074 ▼
- Weekdays
- €0.065
- Weekends
- €0.050
Wholesale price · /kWh
Price by day
Daily wholesale average; the line marks the monthly average.
/kWh
The average day
Average wholesale price for each hour of the day this month.
/kWh · 12:00–15:00
All days
| Day | Average | Lowest | Highest | Hours < 0 | Final (est.) |
|---|---|---|---|---|---|
| 1 Sept Monday | €0.031 | €0.000 12:00 | €0.100 20:00 | – | €0.137 |
| 2 Sept Tuesday | €0.062 | €0.004 10:00 | €0.160 20:00 | – | €0.176 |
| 3 Sept Wednesday | €0.055 | €0.000 15:00 | €0.133 20:00 | – | €0.168 |
| 4 Sept Thursday | €0.056 | €0.002 13:00 | €0.113 20:00 | – | €0.168 |
| 5 Sept Friday | €0.056 | €0.003 13:00 | €0.107 20:00 | – | €0.168 |
| 6 Sept Saturday | €0.027 | -€0.001 13:00 | €0.075 23:00 | 5 | €0.132 |
| 7 Sept Sunday | €0.032 | €0.000 11:00 | €0.112 20:00 | – | €0.139 |
| 8 Sept Monday | €0.076 | €0.027 14:00 | €0.108 07:00 | – | €0.194 |
| 9 Sept Tuesday | €0.064 | €0.009 14:00 | €0.120 20:00 | – | €0.178 |
| 10 Sept Wednesday | €0.052 | €0.000 10:00 | €0.105 20:00 | – | €0.163 |
| 11 Sept Thursday | €0.055 | €0.000 12:00 | €0.140 20:00 | – | €0.167 |
| 12 Sept Friday | €0.074 | €0.004 13:00 | €0.143 06:00 | – | €0.190 |
| 13 Sept Saturday | €0.061 | €0.000 11:00 | €0.106 20:00 | – | €0.174 |
| 14 Sept Sunday | €0.049 | €0.000 13:00 | €0.126 20:00 | 1 | €0.160 |
| 15 Sept Monday | €0.067 | €0.003 13:00 | €0.124 07:00 | – | €0.182 |
| 16 Sept Tuesday | €0.073 | €0.006 13:00 | €0.199 20:00 | – | €0.189 |
| 17 Sept Wednesday | €0.086 | €0.015 13:00 | €0.215 20:00 | – | €0.205 |
| 18 Sept Thursday | €0.097 | €0.044 14:00 | €0.200 20:00 | – | €0.219 |
| 19 Sept Friday | €0.090 | €0.031 13:00 | €0.125 19:00 | – | €0.210 |
| 20 Sept Saturday | €0.066 | €0.001 14:00 | €0.111 20:00 | – | €0.181 |
| 21 Sept Sunday | €0.042 | -€0.001 15:00 | €0.086 23:00 | 4 | €0.152 |
| 22 Sept Monday | €0.035 | €0.000 12:00 | €0.109 20:00 | 4 | €0.142 |
| 23 Sept Tuesday | €0.052 | €0.000 11:00 | €0.105 19:00 | – | €0.164 |
| 24 Sept Wednesday | €0.048 | €0.001 11:00 | €0.116 19:00 | – | €0.158 |
| 25 Sept Thursday | €0.079 | €0.020 13:00 | €0.175 20:00 | – | €0.197 |
| 26 Sept Friday | €0.092 | €0.022 13:00 | €0.160 20:00 | – | €0.212 |
| 27 Sept Saturday | €0.072 | €0.006 14:00 | €0.116 23:00 | – | €0.188 |
| 28 Sept Sunday | €0.049 | €0.009 12:00 | €0.074 19:00 | – | €0.160 |
| 29 Sept Monday | €0.059 | €0.022 13:00 | €0.133 19:00 | – | €0.172 |
| 30 Sept Tuesday | €0.083 | €0.022 12:00 | €0.199 19:00 | – | €0.201 |
/kWh · Today · Methodology