The economics of solar PV self-consumption in Thailand

Tongsopit, Sopitsuda; Junlakarn, Siripha; Wibulpolprasert, Wichsinee; Chaianong, Aksornchan; Kokchang, Phimsupha; Hoang, Nghia Vu

doi:10.1016/j.renene.2019.01.087

Cited by 64 publications

(32 citation statements)

References 14 publications

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“…The other sectors (MGS and LGS) are not critical since they have larger demand than PV production. These PV size selections are also well aligned with a range of appropriate PV production and annual load consumption ratio (PV-to-load ratio) as discussed in [20,21], reflecting high economic feasibility of rooftop PV installation under net-billing scheme for each customer group in Thailand. Table 1.…”

Section: Scope Of Workmentioning

confidence: 79%

Cost–Benefit Analysis of Rooftop PV Systems on Utilities and Ratepayers in Thailand

et al. 2019

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Driven by falling photovoltaic (PV) installation costs and potential support policies, rooftop PV is expected to expand rapidly in Thailand. As a result, the relevant stakeholders, especially utilities, have concerns about the net economic impacts of high PV adoption. Using a cost–benefit analysis, this study quantifies the net economic impacts of rooftop PV systems on three utilities and on ratepayers in Thailand by applying nine different PV adoption scenarios with various buyback rates and annual percentages of PV cost reduction. Under Thailand’s current electricity tariff structure, Thai utilities are well-protected and able to pass all costs due to PV onto the ratepayers in terms of changes in retail rates. We find that when PV adoption is low, the net economic impacts on both the utilities and retail rates are small and the impacts on each utility depend on its specific characteristics. On the other hand, when PV adoption ranges from 9–14% in energy basis, five-year retail rate impacts become noticeable and are between 6% and 11% as compared to the projected retail rates in 2036 depending on the PV adoption level. Thus, it is necessary for Thailand to make tradeoffs among the stakeholders and maximize the benefits of rooftop PV adoption.

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Section: Scope Of Workmentioning

confidence: 79%

Cost–Benefit Analysis of Rooftop PV Systems on Utilities and Ratepayers in Thailand

et al. 2019

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“…By such renewable energy systems integration, buildings are transferring their roles from conventional electricity consumers to electricity prosumers. As defined in [21,22], electricity prosumers are electricity consumers who produce electricity for their own consumption using distributed energy technologies. From the perspective of buildings, this transformation can help cut down grid power usage, thereby reducing the electricity costs as well as reducing carbon emissions if grid power is produced from fossil fuels [23].…”

Section: Building Prosumers Rolementioning

confidence: 99%

A Technical Review of Modeling Techniques for Urban Solar Mobility: Solar to Buildings, Vehicles, and Storage (S2BVS)

et al. 2020

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The deployment of solar photovoltaics (PV) and electric vehicles (EVs) is continuously increasing during urban energy transition. With the increasing deployment of energy storage, the development of the energy sharing concept and the associated advanced controls, the conventional solar mobility model (i.e., solar-to-vehicles (S2V), using solar energy in a different location) and context are becoming less compatible and limited for future scenarios. For instance, energy sharing within a building cluster enables buildings to share surplus PV power generation with other buildings of insufficient PV power generation, thereby improving the overall PV power utilization and reducing the grid power dependence. However, such energy sharing techniques are not considered in the conventional solar mobility models, which limits the potential for performance improvements. Therefore, this study conducts a systematic review of solar mobility-related studies as well as the newly developed energy concepts and techniques. Based on the review, this study extends the conventional solar mobility scope from S2V to solar-to-buildings, vehicles and storage (S2BVS). A detailed modeling of each sub-system in the S2BVS model and related advanced controls are presented, and the research gaps that need future investigation for promoting solar mobility are identified. The aim is to provide an up-to-date review of the existing studies related to solar mobility to decision makers, so as to help enhance solar power utilization, reduce buildings’ and EVs’ dependence and impacts on the power grid, as well as carbon emissions.

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“…The excess power from rooftop PV that feeds to the grid may not be received any compensation from the government. For example, the Pilot project in Thailand's 100MW rooftop PV in 2016, in which the government encouraged people for self-consumption and no payment for any excess electricity load into the national grid [22].…”

Section: Financial Supporting Ways From Governments Toward the Power mentioning

confidence: 99%

“…They are also easy to use in the Central Highlands because over 95 % of households in this area have grid electricity in their houses [21]. Moreover, rooftop solar is considered as self-consumption electricity that helps decrease the dependent on the national grid [22].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Retail Electricity Price Levels on the Financial Indicators of Smart-Grid Rooftop Solar Power Systems: A Case Study in the Central Highlands of Vietnam

Lân

Jirakiattikul

Niem

et al. 2020

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Abstract Background: There are many constraints on the use of fossil fuels and, many countries have, therefore, conducted research relating to alternative energy resources to replace conventional fuels. On 31 January 2019, the Vietnamese Ministry of Finance enacted a preferential policy relating to the installation of under-50kWp rooftop solar projects. The Central Highlands of Vietnam has a high potential for solar power generation due to the duration of sunshine it enjoys, and the development of both rooftops solar and solar farms is appropriate for the region. The study reported investigated the economic efficiency of smart-grid rooftop solar electricity systems (SG rooftop PV) in the Central Highlands of Vietnam in light of the different levels of retail electricity pricing in Vietnam and the implementation of a feed-in-tariff system. The research reported in this paper will be useful for many groups of stakeholders, including electricity consumers who intend to install rooftop solar panels on their houses, companies who supply SG rooftop PV, and policymakers, who can use the findings relating to SG rooftop PV to adjust the retail price of electricity during different periods.Method: Financial indicators were calculated based on the net present value, payback period, internal rate of return, and the number of hours of sunshine in the Central Highlands of VietnamResult: The study’s results show that the electricity price level affects the economic efficiency of SG rooftop PV. In particular, SG rooftop PV installed to satisfy higher levels of electricity consumption, which attract a higher retail electricity price, result in greater benefits, especially when domestic electricity consumption exceeds 400 kWh, at which level the retail electricity price is at the highest level. In this case, people who install SG rooftop PV and use all the electricity to satisfy domestic consumption will recoup their investment in only 4 years and thereafter will enjoy free electricity. Conclusion: All the financial indicators derived from this research show that people in the Central Highlands of Vietnam can derive benefit from installing SG rooftop PV, whether they sell all the electricity output to the grid or use the power output to satisfy their domestic demand.

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The economics of solar PV self-consumption in Thailand

Cited by 64 publications

References 14 publications

Cost–Benefit Analysis of Rooftop PV Systems on Utilities and Ratepayers in Thailand

Cost–Benefit Analysis of Rooftop PV Systems on Utilities and Ratepayers in Thailand

A Technical Review of Modeling Techniques for Urban Solar Mobility: Solar to Buildings, Vehicles, and Storage (S2BVS)

The Effect of Retail Electricity Price Levels on the Financial Indicators of Smart-Grid Rooftop Solar Power Systems: A Case Study in the Central Highlands of Vietnam

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