Abstract
Thailand’s power system has been facing an energy transition due to the increasing amount of Renewable Energy (RE) integration, prosumers with self-consumption, and digitalization-based business models in a Local Energy Market (LEM). This paper introduces a decentralized business model and a possible trading platform for electricity trading in Thailand’s Micro-Grid to deal with the power system transformation. This approach is Hybrid P2P, a market structure in which sellers and buyers negotiate on energy exchanging by themselves called Fully P2P trading or through the algorithm on the market platform called Community-based trading. A combination of Auction Mechanism (AM), Bill Sharing (BS), and Traditional Mechanism (TM) is the decentralized price mechanism proposed for the Community-based trading. The approach is validated through a test case in which, during the daytime, the energy import and export of the community are significantly reduced when 75 consumers and 25 PV rooftop prosumers participate in this decentralized trading model. Furthermore, a comparison analysis confirms that the decentralized business model outperforms a centralized approach on community and individual levels.
Highlights
The power system transformation is a challenging global issue driven by 3Ds: Decarbonization, Decentralization, and Digitalization [1]
The import and export energies are created by using the System Advisor Model (SAM) 2020.11.29 Revision 1, SSC 252 [30], which requires four inputs: the hourly load data, PV module data, inverter data, and weather and location data
This paper focuses on the the decentralized electricity trading algorithm deployed on the market platform, so the decentralized electricity trading algorithm deployed on the market platform, so the algoalgorithm for generating offer prices is out scope.,bid bidand andoffer offer prices prices are are rithm for generating bidsbids andand offer prices is out ofof scope
Summary
The power system transformation is a challenging global issue driven by 3Ds: Decarbonization, Decentralization, and Digitalization [1]. The overall contract capacity is limited, and the incentive price is reduced due to the impact of repurchasing pass-through energy costs on customers’ electric bills [9,12]. Thailand’s power market has been under the Enhanced Single Buyer model [13], so the small producers cannot sell the energy production to others except the authorized utility company. They cannot sell surplus power production over the power capacity specified in the Power Purchasing Agreement (PPA). The buyers have a chance to buy electricity at a lower price than the grid price This model increases the independence of prosumers and consumers in Thailand’s power market.
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