Energy Refurbishment of an Office Building with Hybrid Photovoltaic System and Demand-Side Management

Davi, G.; Asiain, José López de; Solano, Juan; Caamaño‐Martín, E.; Bedoya, C.

doi:10.3390/en10081117

Cited by 11 publications

(8 citation statements)

References 37 publications

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“…Table 2 presents several scenarios, where the extreme cases are w self,c equal to 0%, when all produced energy is sold and to 100% if all of the produced energy is consumed. In some scenarios characterized by a higher rate of self-consumption, Demand Side Management may be required [20,42], and consequently, values reported in Table 2 are overestimated in comparison to the real case study. A comparison among several sizes is proposed in Figure 2.…”

Section: The Profitability Of Pv Systemsmentioning

confidence: 83%

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

2017

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A solar photovoltaic system produces electricity by converting energy from the sun. By the end of 2016, the global installed solar photovoltaic capacity reached 305 GW. Its growth is impressive in the last years; in fact, it was only equal to 41 GW in 2010. However, Europe has installed only 6.9 GW in 2016 (−1.7 GW in comparison to previous year) and this annual power installed is equal to 9% of global one in according to data released by Solar Power Europe. The profitability of PV systems in mature markets depends on the harmonization between demanded energy and produced one residential energy storage when combined with photovoltaic panels is able to increase the share of self-consumption. This work proposes a mathematical model, in which a Discounted Cash Flow analysis is conducted to evaluate the financial feasibility of photovoltaic-integrated lead acid battery systems in Italy. The indicator used is Net Present Value. Furthermore, a break-even point analysis, in terms of an increase of self-consumption, is conducted. The residential sector is investigated and energy storage system investment is incentivized by fiscal deduction and regional subsidies. The analysis provides several case studies, determined by combinations of the following variables: photovoltaic plant size, battery capacity, the increase of the share of self-consumption, and the useful lifetime of energy storage system. The same case studies are proposed also in four alternative scenarios, where is the modified the structure of subsidies. Results confirm that the profitability can be reached in presence of subsidies.

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Section: The Profitability Of Pv Systemsmentioning

confidence: 83%

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

2017

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“…PV generation and DR are considered together in a past study [22] for an office building, i.e., a higher aggregation level (120 kW of PV installed capacity in this case). Tariffs, charges, and the share of end-uses are very different for small and medium segments.…”

Section: Literature Surveymentioning

confidence: 99%

Integration of Demand Response and Photovoltaic Resources in Residential Segments

et al. 2018

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The development of renewable sources in residential segments is basic to achieve a sustainable energy scenario in the horizon 2030–2050 because these segments explain around 25% of the final energy consumption. Demand Response and its effective coordination with renewable are additional concerns for residential segments. This paper deals with two problems: the demonstration of cost-effectiveness of renewables in three different scenarios, and the application of the flexibility of demand, performing as energy storage systems, to efficiently manage the generation of renewable sources while improving benefits and avoiding penalties for the customer. A residential customer in Spain has been used as example. The work combines the use of a commercial simulator to obtain photovoltaic generation, the monitoring of customer to obtain demand patterns, and the development of a Physically-Based Model to evaluate the capability of demand to follow self-generation. As a main result, the integration of models (load/generation), neglected in practice in other approaches in the literature, allows customers to improve revenue up to 20% and reach a basic but important knowledge on how they can modify the demand, development of new skills and, in this way, learn how to deal with the characteristics and limitations of both Demand and Generation when a customer becomes a prosumer. This synergy amongst demand and generation physically-based models boosts the possibilities of customers in electricity markets.

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“…Both multi-objective and single-objective optimization studies were performed for improving buildings energy performance. For instance, Dávi et al [22] studied the energy performance and economy of a hybrid photovoltaic system with demand-side management for an office building through multi-objective optimization. Kuang et al [23] determined the most economical operation schedule of a combined heating, cooling, and power system with energy storage unit.…”

Section: Introductionmentioning

confidence: 99%

Cool Roof Impact on Building Energy Need: The Role of Thermal Insulation with Varying Climate Conditions

et al. 2019

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Cool roof effectiveness in improving building thermal-energy performance is affected by different variables. In particular, roof insulation level and climate conditions are key parameters influencing cool roofs benefits and whole building energy performance. This work aims at assessing the role of cool roof in the optimum roof configuration, i.e., combination of solar reflectance capability and thermal insulation level, in terms of building energy performance in different climate conditions worldwide. To this aim, coupled dynamic thermal-energy simulation and optimization analysis is carried out. In detail, multi-dimensional optimization of combined building roof thermal insulation and solar reflectance is developed to minimize building annual energy consumption for heating-cooling. Results highlight how a high reflectance roof minimizes annual energy need for a small standard office building in the majority of considered climates. Moreover, building energy performance is more sensitive to roof solar reflectance than thermal insulation level, except for the coldest conditions. Therefore, for the selected building, the optimum roof typology presents high solar reflectance capability (0.8) and no/low insulation level (0.00-0.03 m), except for extremely hot or cold climate zones. Accordingly, this research shows how the classic approach of super-insulated buildings should be reframed for the office case toward truly environmentally friendly buildings.

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Energy Refurbishment of an Office Building with Hybrid Photovoltaic System and Demand-Side Management

Cited by 11 publications

References 37 publications

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

The Economic Feasibility of Residential Energy Storage Combined with PV Panels: The Role of Subsidies in Italy

Integration of Demand Response and Photovoltaic Resources in Residential Segments

Cool Roof Impact on Building Energy Need: The Role of Thermal Insulation with Varying Climate Conditions

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