Techno-economic feasibility assessment of grid-defection

Liu, Hangyue; Azuatalam, Donald; Chapman, Archie C.; Verbič, Gregor

doi:10.1016/j.ijepes.2019.01.045

Cited by 23 publications

(10 citation statements)

References 13 publications

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“…In Sege Park, the microgrid investigations and presentations have been technically oriented. Off-grid solutions are typically expensive [48], and when standardized solutions are lacking, the conclusion that a microgrid in Sege Park would be neither economically nor environmentally beneficial is unsurprising. Studying the documentation connected to Sege Park, the consultancy reports and the presentations made during the dialogue meetings, it seems as though the key actors are locked into centralized solutions beneficial to incumbent actors such as the DSO in this case [49].…”

Section: Discussionmentioning

confidence: 99%

Distributed Energy Systems and Energy Communities Under Negotiation

Kojonsaari

Palm

2021

Technol Econ Smart Grids Sustain Energy

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New decentralized energy-generation technologies have turned economies of scale upside down while becoming more economically viable. At the same time, the increased penetration of information technologies has led to new opportunities to manage infrastructure in a less hierarchical, more flexible way. Together with citizen demands for control over energy, these two converging trends has put energy communities (ECs) on the agenda, potentially advancing the transition towards more sustainable energy systems, despite hindrances encountered on the way. This paper presents a case study of the planning process of a sustainable city district in Sweden, using participatory observations and interviews conducted with included stakeholders. We analyse how the included stakeholders has reasoned about establishing a sustainable energy system in the area, including a microgrid. The discussions on a microgrid comprised two parallel discourses, coexisting but seldomly explicitly confronted. The distribution system operator in the area promoted a distributed energy system (DES) solution, while the property developers opted for a microgrid organized more as a citizen energy community (CEC). We discuss why the CEC proponents so far has lost the battle of creating a community owned smart grid. We conclude that the different models, a DES and a CEC, comprise different values and an increased focus on energy communities could shift the transition pathway towards a more decentralized system involving other prioritise than just economical.

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Section: Discussionmentioning

confidence: 99%

Distributed Energy Systems and Energy Communities Under Negotiation

Kojonsaari

Palm

2021

Technol Econ Smart Grids Sustain Energy

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“…In Sege Park, the microgrid investigations and presentations have been technically oriented. Off-grid solutions are typically expensive (Liu et al, 2019), and when standardized solutions are lacking, the conclusion that a microgrid in Sege Park would be neither economically nor environmentally bene cial is unsurprising. Studying the documentation connected to Sege Park, the consultancy reports, and the presentations made during the dialogue meetings, it seems as though the key actors are locked into centralized solutions bene cial to incumbent actors such as the DSO in this case (Palm, 2006;Smith et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Distributed Energy Systems and Energy Communities Under Negotiation

Palm

Kojonsaari

2020

Preprint

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BackgroundNew decentralized energy-generation technologies have turned economies of scale upside down while becoming more economically viable. The increased penetration of information technologies has led to new opportunities to manage infrastructure in a less hierarchical, more flexible way. Together with citizen demands for control over energy, this has put energy communities (ECs) on the agenda, potentially advancing the transition towards more sustainable energy systems, despite hindrances encountered on the way.This paper presents a case from Sweden, using participatory observations and interviews conducted during the planning of a sustainable city district built around sharing. We examined the discussions between stakeholders concerning smart energy systems and the establishment of a microgrid.ResultsWe found that the discussions of the microgrid comprised two parallel discourses, coexisting but seldomly explicitly confronted. The distribution system operator in the area promoted its solutions, while the property developers opted for a microgrid organized more as an EC. We discuss why the EC proponents apparently lost the battle in this smart grid case.ConclusionsThis paper described the energy planning process in a case study in Sweden, where two different models for building an electric microgrid can be identified: distributed energy systems and energy community perspectives. We suggest that these perspectives have different values. We conclude that interest in microgrids could shift the transition pathway towards a more decentralized system involving a variety of owners.

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“…Nonetheless, NSW achieves nearly full grid independence at high E Bat,N , although the fulls costs of grid defection may be considerable when either electricity supply disruptions or the required amount of additional storage capacity are included. 16 For Germany, autarky reaches a maximum of 76.1% at E Bat,N =20kWh. The seasonal fluctuation in generated PV energy limits the maximum value due to lower solar generation in winter.…”

Section: Autarky Ratementioning

confidence: 99%

“…9 The long-term performance and profitability of commercial BESS [10][11][12] and residential PV-BESS is of great interest in research. [13][14][15][16] The aging mechanisms, however, are rarely accounted for and a fixed battery lifetime is often assumed when making economic assessments. In reality, the degradation of batteries depends on several stress factors like capacity throughput, cycle depth, rest state-of-charge, current rate, and temperature.…”

Section: Introductionmentioning

confidence: 99%

Assessment of residential battery storage systems and operation strategies considering battery aging

et al. 2019

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With the increasing popularity of combining residential photovoltaic systems with battery storages, research, industry, and customers look for ways to determine if such an investment is economically profitable. Simulation programs may serve to predict the profitability and lifetime of the system. In this paper, we use techno-economic analysis with a specific account of battery degradation to determine profitability and lifetime of a residential photovoltaic (PV) battery system under different energy management and tariff regimes. This work presents two case studies: the first being a techno-economic comparison for a residential PV-battery system in New South Wales, Australia and Germany, and the second analyzing the profitability and degradation impact of three different operation strategies for a battery storage in Australia. The results reveal that site-specific conditions (i.e., geographical and energy-economic constraints) may have a significant impact on the ideal system configuration and ultimately the anticipated battery lifetime. Furthermore, statistical analysis of different storage operation strategies applied to various prosumer load and generation profiles reveals the effects of storage dispatch strategies on battery aging.

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Techno-economic feasibility assessment of grid-defection

Cited by 23 publications

References 13 publications

Distributed Energy Systems and Energy Communities Under Negotiation

Distributed Energy Systems and Energy Communities Under Negotiation

Distributed Energy Systems and Energy Communities Under Negotiation

Assessment of residential battery storage systems and operation strategies considering battery aging

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