Decision Support System Based on Differentiated (Block) Tarriffs and Prosumers in Energy Billing System - EPBIH Case Study

The paper provides a process and technical overview of the implemented algorithms for calculating and billing consumption by block tariffs, as well as the process of entering and maintaining calculation parameters: prices, block boundaries, number of days for which kWh consumption is projected when calculating consumption blocks, quantity of KW for customer billing, etc.

Using examples of metering points of individuals for the D1 and D2 tariff group, an algorithm for calculating the share of higher and lower tariffs in total consumption, as well as in individual consumption blocks, has been developed. For examples of metering points of the D1 tariff group, the algorithm calculates the distribution of total consumption by blocks. Examples of different consumptions were used to demonstrate the functioning of the calculation algorithm in all block boundaries.

In the second part of the paper, presentations are given of calculations at prices without blocks in comparison with calculations of the same consumption but with prices by blocks. From the comparative analyses mentioned above, it can be concluded what the impact of differentiated tariff model is on the total calculated consumption.

The special focus of the paper will be on the calculation of prosumers as a special type of customer who have a license to produce electricity for their own needs. In addition to consumption blocks, the algorithm calculates the taken and delivered energy, energy and monetary credit that is maintained at the level of each billing period, including the annual billing. If the energy is greater than the delivered energy, the energy credit has negative values that are taken as the initial balance for the next billing period. Conversely, if the taken energy is less than the delivered energy, the energy credit has positive values. In addition to the energy credit, the monetary credit is also calculated in a way that the net amounts of taken energy and the net amounts of delivered energy are calculated by multiplying the corresponding energies with the unit price agreed through the tariff package.

In the last part of the paper, we will provide an example of comparing consumption according to different prosumer supply schema models.