A Framework for Evaluating Economic Impacts of Rooftop PV Systems with or without Energy Storage on Thai Distribution Utilities and Ratepayers

International Conference on Sustainable Energy Engineering

能源学;经济学

Chaianong, A.^1,3 ; Bangviwat, A.^1,3 ; Menke, C.^1,2,3

Joint Graduate School of Energy and Environment, King Mongkut's University of Technology Thonburi, Bangkok, Thailand^1

Trier University of Applied Sciences, Germany^2

Center of Excellence on Energy Technology and Environment, PERDO, Bangkok, Thailand^3

关键词: Business model innovation;    Distribution capacity;    Distribution utilities;    Electricity costs;    Energy storage systems;    Regulatory reform;    Self- consumption;    Transmission loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/73/1/012008/pdf
DOI  :  10.1088/1755-1315/73/1/012008

来源: IOP

【 摘 要 】

Driven by decreasing PV and energy storage prices, increasing electricity costs and policy supports from Thai government (self-consumption era), rooftop PV and energy storage systems are going to be deployed in the country rapidly that may disrupt existing business models structure of Thai distribution utilities due to revenue erosion and lost earnings opportunities. The retail rates that directly affect ratepayers (non-solar customers) are expected to increase. This paper focuses on a framework for evaluating impacts of PV with and without energy storage systems on Thai distribution utilities and ratepayers by using cost-benefit analysis (CBA). Prior to calculation of cost/benefit components, changes in energy sales need to be addressed. Government policies for the support of PV generation will also help in accelerating the rooftop PV installation. Benefit components include avoided costs due to transmission losses and deferring distribution capacity with appropriate PV penetration level, while cost components consist of losses in revenue, program costs, integration costs and unrecovered fixed costs. It is necessary for Thailand to compare total costs and total benefits of rooftop PV and energy storage systems in order to adopt policy supports and mitigation approaches, such as business model innovation and regulatory reform, effectively.