The 3.0TD Tariff is recommended for Low Voltage supplies with energy consumption greater than 20,000 kWh and means contracting a minimum of 15,001 kW of power.

The 3.0TD rate has 6 time periods that are organised into seasons (high, medium high, medium and low) defined for the 12 months of the year (you can see this in our time period graphs). Therefore, depending on the month or months that the invoiced period includes, those time periods will be included for the billing of energy and power excesses (if they occur).

The power to be billed will always be 6 periods, as established in Circular 3/2020, published by the CNMC.

You can contract the same power over all periods, but it is not an essential requirement. Different powers can be contracted, although they must always follow an equal or ascending order so that, if the same power has not been contracted over all periods, P6 will always be the highest:

P1 ≤ P2 ≤ P3 ≤ P4 ≤ P5 ≤ P6

In the 3.0TD Tariffs, if you exceed the contracted power, excess power will be billed.

For supplies with contracted power up to 50 kW (inclusive), excesses will be billed per maximeter. That is, they will be calculated based on the maximum power consumed in the billed period.

For supplies with power greater than 50 kW, quarterly-hour excesses will be billed. In other words, every quarter of an hour that the power contracted for the calculation is exceeded will be counted.

If the contracted power is exceeded by a large number of quarters of an hour per month, the excess power will be cheaper with the first calculation method and vice versa.