Individual Self-Consumption

1. After logging in, you will need to access the "Os meus locais" (“My locations”) option;

2. Then select "Leituras" (“Readings”);

3. Then select "Consultar histórico" (View history);

4. Next, you must select the place of consumption you wish to consult;

5. You then access the Histórico de Leituras (or Readings History) where you can check your data for Energia Consumida (Consumed Energy) and Energia Injetada (Injected Energy): 

• Consumed Energy - Low-Load/Peak/Normal;
• Consumed Energy - Low-Load/Peak/Normal Balance; 
• Injected Energy - Low-Load/Peak/Normal;
• Injected Energy - Low-Load/Peak/Normal Balance.

To check the readings sent to your supplier, you should refer to the columns “Saldo” or “Balance”.

1. After logging in, you will need to access the "Os meus locais" (“My locations”) option;

2. Then select "Produção, consumos e potências", which translates to “Production, consumption, and power”;

3. Then select "Consultar histórico" (View history);

4. Next, you must select the place of consumption you wish to consult;

5. You then access the Diagrama de Cargas, which translates to Load Diagram, where you can visualise:

• Consumo registado (Registered consumption);
• Produção registada (Registered production);
• Consumo medido na IC (Consumption measured at the Consumption Facility);
• Injeção na rede medida na IC (Injection into the network measured at the Consumption Facility).  

In this scenario, the Consumption Facility consumes more energy than what is generated by the production facility (e.g., with photovoltaic panels). This means that part of the energy must be sourced from the electrical grid to cover the total consumption. There may also have been excess production relative to the energy needs, as there is an injection into the grid.

Example: The house consumed 35 kW from the Public Service Electricity Network (RESP) and injected 20 kW during the same period. In this case, applying the SQH (Quarter-Hourly Balance) can be summarized as subtracting the total injection from the total consumption from the grid, resulting in a surplus consumption of 15 kW to be billed to the customer.
Although there was an injection into the grid (20 kW), since this amount was entirely used to offset the consumption, the net injection balance will be zero.

In this scenario, the production facility may or may not have generated energy, but any energy that was produced was entirely used by the CF. Since there was no injection into the grid, there will be nothing to offset against the energy consumed from the grid, so the results of the values before and after applying the SQH will be the same.

Example: During this period, two situations could have occurred: either the house consumed 25 kW and did not generate any energy with the Production Facility, so all 25 kW were sourced from the Public Network, or the energy produced by the Production Facility was exactly sufficient to cover the consumption of the CF. 

In this case, the energy generated by the panels exceeds the consumption of the CF, so the excess energy generated is injected back into the grid and can be sold to a supplier if an active surplus sale contract is in place.

Example: The house consumed 10 kW and, during the same period, injected 30 kW. By subtracting the total injection (30 kW) from the total consumption (10 kW), there is no consumption left to bill to the customer, as the result is negative (-20 kW), and consumption cannot be less than zero. The Consumption Balance will be zero, and the remaining 20 kW of injection corresponds to the Injection Balance, which can be sold as surplus if a sale contract is in place.

In this scenario, energy was produced with the Production Facility, but the Consumption Facility (CF) did not consume any energy from the grid during this period, only injecting energy into the grid. All the generated energy is injected into the electrical grid.

Example: The house consumed 0 kW from the grid and injected 30 kW during the same period. In this case, the Consumption Balance will remain at 0, and the Injection Balance will be equal to the gross value (30 kW), as there was no need to offset any consumption.