For each combination base/peak and term, a nominal or multiplier is associated, depending on the number of hours of the delivery period (for example: quarterly base 90 days with a 23 hour day, quarterly base 91 days with 24 hours, quarterly base 92 days with 24 hours, etc).
The number of hours depends on: the term of the contract, the calendar and the relevant hours of each contract. For example, for base and Mini contracts we have:
| Delivery Period | Specific Period | Days | Nominal (MWh) | Nominal Mini(MWh) |
|---|---|---|---|---|
| Week | Whole - Without time change | 7 | 168 | 16.8 |
| Whole - March with time change | 7 | 167 | 16.7 | |
| Whole - October with time change | 7 | 169 | 16.9 | |
| Weekend - Without time change | 2 | 48 | 4.8 | |
| Weekend - March with time change | 2 | 47 | 4.7 | |
| Weekend - October with time change | 2 | 49 | 4.9 | |
| Month | February | 28 | 672 | 67.2 |
| February (leap year) | 29 | 696 | 69.6 | |
| January, May, July, August and December | 31 | 744 | 74.4 | |
| April, June, September and November | 30 | 720 | 72.0 | |
| March | 31 | 743 | 74.3 | |
| October | 31 | 745 | 74.5 | |
| Quarter | First | 90 | 2,159 | 215.9 |
| First (leap year) | 91 | 2,183 | 218.3 | |
| Second | 91 | 2,184 | 218.4 | |
| Third | 92 | 2,208 | 220.8 | |
| Fourth | 92 | 2,209 | 220.9 | |
| Year | Normal | 365 | 8,760 | 876.0 |
| Leap year | 366 | 8,784 | 878.4 |
Logically, contracts with the same delivery period (for example annual swaps and futures) have the same nominal.
| Delivery Period | Specific Period | Days | Nominal (MWh) |
|---|---|---|---|
| Week | Business days | 5 | 60 |
The nominal for peak monthly, quarterly and annual contracts will depend on the number of days in the delivery period that are not Saturdays and Sundays.
