Techno-economic analysis of PV-battery systems in Switzerland

Han, Xuejiao; Garrison, Jared; Hug, Gabriela

doi:10.1016/j.rser.2021.112028

Cited by 83 publications

(20 citation statements)

References 42 publications

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“…To calculate the number of years the school will need to recover what has been invested, the payback period has also been calculated for each scenario by dividing the investment cost by the yearly cash flow 60 .…”

Section: Methodsmentioning

confidence: 99%

Second-life battery systems for affordable energy access in Kenyan primary schools

Kebir

Leonard

Downey

et al. 2023

Sci Rep

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As the world transitions to net zero, energy storage is becoming increasingly important for applications such as electric vehicles, mini-grids, and utility-scale grid stability. The growing demand for storage will constrain raw battery materials, reduce the availability of new batteries, and increase the rate of battery retirement. As retired batteries are difficult to recycle into components, to avoid huge amounts of battery waste, reuse and repurposing options are needed. In this research, we explore the feasibility of using second-life batteries (which have been retired from their first intended life) and solar photovoltaics to provide affordable energy access to primary schools in Kenya. Based on interviews with 12 East African schools, realistic system sizes were determined with varying solar photovoltaic sizes (5–10 kW in 2.5 kW increments) and lithium-ion battery capacities (5–20 kWh in 5 kWh increments). Each combination was simulated under four scenarios as a sensitivity analysis of battery transportation costs (i.e., whether they are sourced locally or imported). A techno-economic analysis is undertaken to compare new and second-life batteries in the resulting 48 system scenarios in terms of cost and performance. We find that second-life batteries decrease the levelized cost of electricity by 5.6–35.3% in 97.2% of scenarios compared to similar systems with new batteries, and by 41.9–64.5% compared to the cost of the same energy service provided by the utility grid. The systems with the smallest levelized cost of electricity (i.e., 0.11 USD/kWh) use either 7.5 kW or 10 kW of solar with 20 kWh of storage. Across all cases, the payback period is decreased by 8.2–42.9% using second-life batteries compared to new batteries; the system with the smallest payback period (i.e., 2.9 years) uses 5 kW solar and 5 kWh storage. These results show second-life batteries to be viable and cost-competitive compared to new batteries for school electrification in Kenya, providing the same benefits while reducing waste.

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Section: Methodsmentioning

confidence: 99%

Second-life battery systems for affordable energy access in Kenyan primary schools

Kebir

Leonard

Downey

et al. 2023

Sci Rep

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show abstract

“…According to [5,18], there is limited literature focusing on how energy communities and PV-battery systems affect the distribution grid. Until now, most studies on energy communities have primarily focused on the sizing and siting of PV and battery systems [19][20][21][22], market designs [23][24][25], or the difference between individual and shared assets [3,[26][27][28][29][30][31].…”

Section: Related Literaturementioning

confidence: 99%

Quantifying the Benefits of Shared Battery in a DSO-Energy Community Cooperation

Berg¹,

Rana²,

Farahmand³

2023

Preprint

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<p>Local energy communities are forming as a way for prosumers and consumers to invest in distributed renewable energy sources, community storage and share electricity. Meanwhile, several distribution grids have voltage problems at certain hours of the year. Local energy communities consisting of generation and storage units might be valuable flexible assets that the distribution system operator (DSO) can make use of. This article aims to study how a battery in an energy community can provide services to the distribution grid, by creating a linear optimisation model which includes power flow constraints and a battery degradation model. First, we investigate how the battery operation of an energy community impacts the voltage in the nearby buses. We find that when including the degradation model, the voltage limits are violated much less than when not including the degradation model. Next, we investigate how the battery operation differs when the energy community cooperates with an active DSO to share the battery use, and quantify how much the DSO should remunerate the energy community. We find that the energy community should get 15 € per year due to an increase in electricity and degradation costs, which equals an increase of 0.12%, compared to when the community is not providing a service. Finally, a sensitivity analysis is performed to determine which parameters are more important to consider. We find that voltage violations in the grid are sensitive to the battery replacement cost, electric vehicle charging peak and the average spot price, while the remuneration from the DSO is sensitive to the battery replacement cost. For small battery sizes and a low power-to-energy ratio, the community is not able to improve the voltage at all hours of the year.</p>

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“…Goswami and Sadhu discussed on how using floating solar photovoltaics in waste water management systems creates a novel nexus between the use of water and energy, low-cost clean energy production, and water conservation; their findings showed that the social and economic performance of the floating solar photovoltaic (FSPV) system was superior to that of the land-based PV (LBPV) system Goswami et al [35]. Also, a typical PV battery system technoeconomic study analysis was done by Han et al on a case study of Switzerland; For some residential customer groups, their results showed that integrating photovoltaic (PV) with batteries already yields superior net present values than PV alone additionally the payback timeframes vary between 2020 and 2035 as a result of the conflicting effects of shifting policies, rising costs, and fluctuations in the price of power [36]. of applications.…”

Section: Affordable and Clean Energy Technologies For Financial And N...mentioning

confidence: 99%

Modelling and Optimization of Clean and Affordable Electricity Solution for Small-Scale Savings and Credit Cooperatives (SACCOs)

Lin¹,

Bimenyimana²,

Wang³

et al. 2023

Energy Engineering

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Renewable energy exploitation is among the development strategies set by the government of Rwanda on the roadmap to 2023/2024 universal electricity access and the United Nations plans by 2030. Numerous previous studies on clean energy technologies in Rwanda have mostly focused on households' usage but there are currently no studies describing the feasibility of clean energy technologies for financial institutions. The skepticism on renewable energy in Africa was previously reported by some personnel. Having realized that most SACCOs (Savings and Credit Co-Operatives) in Rwanda use diesel technology for backup/emergency electricity supply, taking consideration of abundant solar resources in Rwanda, having seen the viability and feasibility studies from other countries of renewable energy for different institutions (financial included); this work uses the HOMER Energy Software and the electricity load profile of a typical SACCO in Rwanda to analyse the affordability and viability of on-site renewable energy generation for SACCO in Rwanda. The results reveal that a solar PV system with storage can be the optimal solution (with levelized cost of electricity (LCOE) of 0.713 $/kWh which is cheaper than 0.73 $/kWh for diesel technology) for SACCOs located in both off-grid areas and grid-connected areas (with 0.041 $/kWh LCOE which is lower than the current electricity tariff in Rwanda). The findings in this work can serve as basic tools/materials for policy drafters in Rwanda on how financial institutions can contribute to climate change mitigation through self-renewable energy exploitation.

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Techno-economic analysis of PV-battery systems in Switzerland

Cited by 83 publications

References 42 publications

Second-life battery systems for affordable energy access in Kenyan primary schools

Second-life battery systems for affordable energy access in Kenyan primary schools

Quantifying the Benefits of Shared Battery in a DSO-Energy Community Cooperation

Modelling and Optimization of Clean and Affordable Electricity Solution for Small-Scale Savings and Credit Cooperatives (SACCOs)

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