Abstract—Driven by decreasing PV and battery installation
costs and mismatch between household demand and PV
generation, household PV-battery systems are going to be
deployed in the country and create significant implications for
utilities in Thailand. This paper mainly discusses both negative
and positive impacts of household PV-battery systems on Thai
utilities. The use of household batteries (storing excess
generation from PV during daytime and discharging it in the
evening) can increase solar capacity values and energy values to
power system, mitigate the problem of “duck curve” and
decrease PV integration cost. Household customers can
consume more PV electricity (increasing PV self-consumption
ratio) from the inclusion of batteries. As a result, it leads to
higher revenue losses and lower re-sale of exported electricity
from PV to distribution utilities, while it is not the case for
generation/transmission utilities since re-sale of exported
electricity is only relevant to distribution power system and
revenue losses of generation/transmission utilities remain
unchanged. This is because with household batteries, the level of
PV installation is the same (only shifting the consumption of
household PV excess generation from daytime to evening).
Therefore, it is necessary to precisely quantify each cost and
benefit component in order to understand values of household
batteries to the power system.
Index Terms—Rooftop PV, battery, household, utility,
Thailand.
The authors are with the Joint Graduate School of Energy and
Environment, King Mongkut’s University of Technology Thonburi,
Bangkok, Thailand and Center of Excellence on Energy Technology and
Environment, PERDO, Bangkok, Thailand (e-mail: achaianong@gmail.com,
athikom.bangviwat@outlook.com, c.menke@blv.hochschule-trier.de ).
[PDF]
Cite:Aksornchan Chaianong, Athikom Bangviwat, and Christoph Menke, "The Implications of Household PV-Battery Systems for Utilities in Thailand," Journal of Clean Energy Technologies vol. 7, no. 2, pp. 15-18, 2019.
