A Study of Grid-Connected Residential PV-Battery Systems in Mongolia

Baigali Erdenebat (), Davaanyam Buyankhishig, Sergelen Byambaa and Naomitsu Urasaki
Additional contact information
Baigali Erdenebat: Graduate School of Engineering and Science, University of the Ryukyus, Nishihara-cho 903-0213, Japan
Davaanyam Buyankhishig: Power Engineering School, Mongolian University of Science and Technology, Sukhbaatar District, Ulaanbaatar 14191, Mongolia
Sergelen Byambaa: Power Engineering School, Mongolian University of Science and Technology, Sukhbaatar District, Ulaanbaatar 14191, Mongolia
Naomitsu Urasaki: Faculty of Engineering, University of the Ryukyus, Nishihara-cho 903-0213, Japan

Energies, 2023, vol. 16, issue 10, 1-14

Abstract: For national energy capacity improvement and CO 2 emission reductions, Mongolia has focused its attention on grid-connected residential PV systems. Due to the feed-in tariff (FIT), the aggregated residential PV systems are expected to increase with the PV penetration level. Currently, there is no power injection limitation in Mongolia. A new policy for the PV penetration level of residential PV systems needs to be developed. This study analyzed the techno-economic performances of distributed PV-battery systems, considering PV generation, the historical load demand, and the tariff structure. We studied the performances of 40 combinations of PV sizes (2 kW–9 kW) and battery capacities (4.4 kWh, 6.6 kWh, 10 kWh, 12 kWh, and 15 kWh) to find feasible system sizes. The aggregated PV-battery systems in a low-voltage (LV) distribution system located in Ulaanbaatar, Mongolia, are also discussed. The results show that six combinations satisfied the technical and economic requirements. The maximum profit was determined to be an NPV of 1650 USD with a 9-year payback period using combination 3 (6 kW PV and 6.6 kWh battery capacity). Combination 6 (8 kW PV and 15 kWh battery capacity) shows that the energy management strategy for residential houses with battery storage has the potential to increase the installed capacity of PV systems without voltage violence in the LV network. For the distributed PV-battery storage system (BSS), the environmental analysis indicates that CO 2 and SO 2 emissions were reduced by 3929 t/year and 49 t/year, respectively. The findings obtained from this analysis will be used for power system planning.

Keywords: residential PV system; battery storage system; self-consumption; low-voltage system; NPV; payback period; emission reductions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/10/4176/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/10/4176/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:10:p:4176-:d:1150293

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().