@ARTICLE{Khawaja_Alisha_Analysis_2024,
 author={Khawaja, Alisha and Olczak, Piotr},
 volume={vol. 27},
 number={No 3},
 journal={Polityka Energetyczna - Energy Policy Journal},
 pages={71-86},
 howpublished={online},
 year={2024},
 publisher={Instytut Gospodarki Surowcami Mineralnymi i Energią PAN},
 abstract={Between 2019 and 2023, over one million PV micro-installations were built in Poland. Most of them have the option of settling prosumer discounts: net-metering (80% of energy sent to the grid returns to the user for PV installation power up to 10 kWp and 70% for power between 10 and 50 kWp). Owners of new PV micro-installations (from 2022) are subject to net-billing settlements, which is economically unfavorable due to the coexistence of low energy prices and high productivity of PV panels. This, however, favors efforts to increase self-consumption of energy in prosumer PV micro-installations. Therefore, for the selected PV installation, the use of electricity storage and thermal energy storage (for the purposes of preparing domestic hot water) was analyzed. The calculations were based on data from the installation collected during one year of operation. A calculation methodology for energy distribution for the consumption and storage of electricity and heat was developed, and thus for estimating the value of energy sent to the grid, taking into account the above-mentioned. The use of electrical and thermal energy storage resulted in an increase in the value of self-consumed energy, with the self-consumption coefficient ranging from 30 to over 80%. The self-consumption rate in the first year of operation of the installation (without energy storage) reached 27.1%, and in the second year 30.7%. A 3 kWh electricity storage would increase the selfconsumption rate in the following years to 51 and 57.2%, and for a 6 kWh capacity 58.5 and 64.1%.},
 type={Article},
 title={Analysis of the possibility of increasing the selfconsumption rate in a household PV micro-installation due to the storage of electricity and heat},
 URL={http://journals.pan.pl/Content/132917/04-03-Olczak%20i%20Khawaja.pdf},
 keywords={heat storage, electricity storage, energy in Poland, PV, implementation of renewable energy},
}