Monthly report · day-ahead marketElectricity prices in Portugal, September 2026
In September 2026, electricity on the day-ahead market in Portugal cost an average of €0.144/kWh (€143.90/MWh); with taxes, network charges and a sample supplier margin, the estimated final price was around €0.277/kWh.
That is 19% more than in August 2026 and 135% more than in September 2025.
The cheapest day was Wednesday, 16 September 2026, averaging €0.105/kWh; the most expensive was Monday, 28 September 2026 at €0.198/kWh.
The lowest price came on 13 September 2026 at 11:15 (-€0.001/kWh), the highest on 30 September 2026 at 20:00 (€0.350/kWh). In total, prices were below zero for 11.8 hours.
On an average day, the cheapest three hours were 12:00–15:00. Weekends were on average 19% cheaper than weekdays.
Compared with
- Previous month (August 2026)
- €0.121 ▲
- Same month last year
- €0.061 ▲
- Weekdays
- €0.151
- Weekends
- €0.123
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 Tuesday | €0.142 | €0.025 13:45 | €0.239 19:30 | – | €0.275 |
| 2 Sept Wednesday | €0.160 | €0.058 14:15 | €0.247 19:45 | – | €0.297 |
| 3 Sept Thursday | €0.157 | €0.027 12:45 | €0.300 20:00 | – | €0.293 |
| 4 Sept Friday | €0.170 | €0.085 10:45 | €0.260 20:15 | – | €0.310 |
| 5 Sept Saturday | €0.138 | €0.003 14:00 | €0.225 20:15 | – | €0.270 |
| 6 Sept Sunday | €0.140 | €0.000 11:00 | €0.249 20:15 | – | €0.273 |
| 7 Sept Monday | €0.172 | €0.057 12:45 | €0.265 20:15 | – | €0.312 |
| 8 Sept Tuesday | €0.152 | €0.034 15:00 | €0.230 07:00 | – | €0.287 |
| 9 Sept Wednesday | €0.109 | €0.001 14:00 | €0.212 19:45 | – | €0.235 |
| 10 Sept Thursday | €0.146 | €0.011 10:30 | €0.278 19:30 | – | €0.280 |
| 11 Sept Friday | €0.145 | €0.010 13:30 | €0.250 19:45 | – | €0.278 |
| 12 Sept Saturday | €0.118 | €0.000 10:30 | €0.214 18:45 | – | €0.246 |
| 13 Sept Sunday | €0.121 | -€0.001 11:15 | €0.238 19:30 | 3.75 | €0.250 |
| 14 Sept Monday | €0.177 | €0.043 11:30 | €0.300 18:45 | – | €0.319 |
| 15 Sept Tuesday | €0.167 | €0.036 12:45 | €0.268 07:00 | – | €0.306 |
| 16 Sept Wednesday | €0.105 | €0.000 12:45 | €0.196 19:45 | – | €0.229 |
| 17 Sept Thursday | €0.128 | €0.001 10:45 | €0.244 18:45 | – | €0.258 |
| 18 Sept Friday | €0.126 | €0.002 10:15 | €0.229 07:00 | – | €0.256 |
| 19 Sept Saturday | €0.110 | €0.000 11:00 | €0.201 19:30 | 0.75 | €0.236 |
| 20 Sept Sunday | €0.113 | €0.000 09:45 | €0.226 18:45 | 6.75 | €0.239 |
| 21 Sept Monday | €0.139 | €0.001 11:30 | €0.277 18:45 | – | €0.271 |
| 22 Sept Tuesday | €0.157 | €0.010 12:00 | €0.300 18:45 | – | €0.294 |
| 23 Sept Wednesday | €0.160 | €0.010 12:45 | €0.274 18:45 | – | €0.298 |
| 24 Sept Thursday | €0.161 | €0.024 12:15 | €0.288 18:45 | – | €0.298 |
| 25 Sept Friday | €0.161 | €0.020 12:45 | €0.287 18:45 | – | €0.299 |
| 26 Sept Saturday | €0.131 | €0.000 14:00 | €0.251 18:45 | – | €0.261 |
| 27 Sept Sunday | €0.114 | €0.000 14:00 | €0.210 18:45 | 0.50 | €0.240 |
| 28 Sept Monday | €0.198 | €0.147 12:15 | €0.281 19:15 | – | €0.344 |
| 29 Sept Tuesday | €0.130 | €0.001 13:00 | €0.239 07:00 | – | €0.261 |
| 30 Sept Wednesday | €0.170 | €0.086 12:45 | €0.350 20:00 | – | €0.310 |
/kWh · Today · Methodology