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ID:
192780
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| Summary/Abstract |
Distributed rooftop photovoltaics (PV) is one of the pillars of the energy transition yet their widespread integration strains grids, leading to over-voltage, reverse power flow, and infrastructure strain. Furthermore, increased PV self-consumption reduces imported electricity, posing challenges for cost recovery by Transmission System Operators (TSOs) and Distribution System Operators (DSOs), whose grid costs were traditionally tied to volumetric tariffs. To investigate whether alternative tariffs could mitigate PV impacts at the distribution level without hampering PV development, we assess five electricity tariffs that could help the DSOs to recover the costs of maintaining the distribution grid. We also analyze their effects on private storage investment and their implications for urban, semi-urban, and rural low-voltage networks. We found that tariffs with a capacity-based component promote further adoption of PV and storage. At the same time, they allow the DSOs to recover the grid cost without incurring relevant economic differences for the customer. Our study found that alternative tariffs like dynamic and capacity-based tariffs promote the adoption of storage and PV systems. While no single tariff alone can fully mitigate PV impacts at the distribution level, our results point towards the need of managing PV export through solutions like PV curtailment.
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| 2 |
ID:
088262
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| Publication |
2009.
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| Summary/Abstract |
The energy density of batteries is two orders of magnitude below that of liquid fuels. However, this information alone cannot be used to compare batteries to liquid fuels for automobile energy storage media. Because electric motors have a higher energy conversion efficiency and lower mass than combustion engines, they can provide a higher deliverable mechanical energy density than internal combustion for most transportation applications.
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| 3 |
ID:
190602
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| Summary/Abstract |
A major challenge faced by policymakers has been determining appropriate subsidy amounts for household energy investments. This can result in inequitable support being either insufficient or excessive. Equitable reverse auctions offer a novel approach to address these issues. Households can bid an amount as a subsidy from the government that they require to go ahead with an energy investment. The lowest bids are successful in a reverse auction, allowing for cost-effective government support. The novel part is the pursuit of equity, as these auctions can occur separately for a pre-determined number of carefully chosen socio-economic groups. Equitable reverse auctions would lower inequality by design, relative to a common benchmark of equal subsidies, for a given government budget and environmental outcomes. Compared to a standard reverse auction, an equitable reverse auction will have greater equality by design but lower cost-effectiveness. However, the design of equitable reverse auctions is cost-effective within each socio-economic group. Non-additional subsidy spending would be reduced through reverse auctions. Equitable reverse auctions would be flexible to fit circumstances across countries, time, and technologies.
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| 4 |
ID:
126488
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| Publication |
2013.
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| Summary/Abstract |
Battery energy storage is a flexible and responsive form of storing electrical energy from Renewable generation. The need for energy storage mainly stems from the intermittent nature of solar and wind energy sources. System integrators are investigating ways to design plants that can provide more stable output power without compromising the financial performance that is vital for investors. Network operators on the other side set stringent requirements for the commissioning of new generation, including preferential terms for energy providers with a well-defined generation profile. The aim of this work is to highlight the market and technology drivers that impact the feasibility of battery energy storage in a Utility-scale solar PV project. A simulation tool combines a battery cycling and lifetime model with a solar generation profile and electricity market prices. The business cases of the present market conditions and a projected future scenario are analyzed.
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| 5 |
ID:
166519
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| Summary/Abstract |
Battery storage systems can balance the intermittency of renewable energy sources. Lithium-ion systems exhibit a declining price trajectory alongside a growing demand. However, little is known about consumer preferences and appropriate business models for storage systems. This paper presents an analysis of German adopters of a photovoltaic system (n = 752) and interested non-adopters (n = 84) to investigate their preferences for lithium-ion storage systems. In a choice experiment respondents had to choose among different system configurations. Respondents preferred choosing none of the presented systems over choosing a system. Potential for the residential and community storage concept with joint usage is found. High levels of autarky have a high utility. Consumers favor ownership over use rights and are willing to give up control to provide services for the grid. Market opportunities for cooperatives, regional power providers, and new market entrants exist. The study can assist in creating customer-focused business models and implementing multi-purpose use cases with value for different actors in the energy system.
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| 6 |
ID:
191303
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| Summary/Abstract |
To promote the uptake of home batteries, the Victorian state government has introduced rebates, beginning in 2019. Using postcode-level data, we quantify some important drivers of home battery uptake with methods such as a negative binomial model. The results show a more robust impact on home battery uptake from housing values rather than income. This suggests that policymakers should change rebate eligibility criteria to support households with lower levels of assets rather than income. Greater focus on assets could involve more support for low-asset households, enhancing equity compared to the current approach of a high and binary eligibility threshold of $3 million related to housing values. We also find evidence that battery uptake was higher by 58% in the nine months to March 2021 for postcodes that had earlier eligibility for rebates, compared to postcodes without eligibility at the start of the period. This suggests that even minor timing differences in rebate availability can have substantial impacts on technology adoption. There are also potential social equity implications for policymakers to consider if some locations receive earlier eligibility. Our analysis showing battery-policy effectiveness is informative for other jurisdictions considering details for battery policies, given the novelty of the battery context.
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| 7 |
ID:
190535
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| Summary/Abstract |
This paper presents a scientifically substantiated system for preparing military wheeled equipment (MWE) for intended use in the Arctic climate zone. This system can be implemented during their design phase and through operational measures for automobile technical support (ATS) taken in the field.
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