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- Liu, Xiaohan, 1994, et al.
(författare)
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Transforming public transport depots into profitable energy hubs
- 2024
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Ingår i: Nature Energy. - 2058-7546. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- Transportation is undergoing rapid electrification, with electric buses at the forefront of public transport, especially in China. This transition, however, could strain electricity grids. Using a large-scale dataset with over 200 million global positioning system records from 20,992 buses in Beijing, we explore the technical, economic and environmental implications of transforming public transport depots into renewable energy hubs. Here we show that solar photovoltaic reduces the grid’s net charging load by 23% during electricity generation periods and lowers the net charging peak load by 8.6%. Integrating energy storage amplifies these reductions to 28% and 37.4%, respectively. Whereas unsubsidized solar photovoltaic yields profit 64% above costs, adding battery storage cuts profits to 31% despite offering grid benefits. Negative marginal abatement gains for CO2 emissions underscore the economic sustainability. Our findings provide a model for cities worldwide to accelerate their commitments towards sustainable transport and energy systems.
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- Michael, Kavya, 1985, et al.
(författare)
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A conceptual analysis of gendered energy care work and epistemic injustice through a case study of Zanzibar’s Solar Mamas
- 2024
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Ingår i: Nature Energy. - 2058-7546. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- Energy and climate transitions bear an inherent risk of replicating historically embedded unjust gendered norms in the current energy regimes. Positioning our work within critical feminist scholarship, our study emphasizes the embedded nature of energy technologies within respective socio-economic, institutional and cultural contexts. We use a combined lens of care and epistemic injustice to examine the case study of Solar Mamas in Barefoot College Zanzibar, highlighting the nuanced interplay of power relations in decentralized energy transitions. This approach helps comprehend and value gendered energy care work as involving skilled labour in everyday life. Our findings illustrate the need for energy transitions research, policy and practice to be deeply informed by lived experiences, diverse practices of care within the energy webs and valuing of multiple voices. We argue that interventions prioritizing care and knowledge in decentralized, locally managed energy provisioning have the potential to disrupt established gender relations.
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- Michael, Kavya, 1985
(författare)
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Insights into gendered energy care work and epistemic injustice from Zanzibar's Solar Mamas programme
- 2024
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Ingår i: NATURE ENERGY. - 2058-7546. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- The Solar Mamas programme for energy transition in Zanzibar, Tanzania, has been analysed through a combined lens of care and epistemic injustice. The case study illustrates that interventions that centre energy care work and its gendered dimensions in locally led energy-transition initiatives can disrupt established gender norms and produce better project outcomes.
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- Perros, Tash, et al.
(författare)
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Towards responsible and fair pay-as-you-go energy access in sub-Saharan Africa
- 2024
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Ingår i: Nature Energy. - 2058-7546. ; 9:5, s. 520-525
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Tidskriftsartikel (refereegranskat)abstract
- Market-based solutions are playing an increasingly important role in advancing the energy sector in sub-Saharan Africa. Here we focus on pay-as-you-go (PAYG) energy systems, a market-based approach that enables users to pay for energy in small amounts. While acknowledging the benefits of PAYG, we draw attention to six areas of concern about its implementation, including the suitability of PAYG business models to serve lower-income households, data collection and use, and the characteristics of PAYG energy providers and investors. We outline an agenda for inclusive PAYG energy systems in a proactive effort to shape a rapidly evolving sector. We hope that by anticipating these risks, we can help ensure that the PAYG sector is appropriately regulated and that its benefits accrue to the intended beneficiaries.
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- Suo, Jiajia, et al.
(författare)
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Multifunctional sulfonium-based treatment for perovskite solar cells with less than 1% efficiency loss over 4,500-h operational stability tests
- 2024
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Ingår i: Nature Energy. - : NATURE PORTFOLIO. - 2058-7546.
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Tidskriftsartikel (refereegranskat)abstract
- The stabilization of grain boundaries and surfaces of the perovskite layer is critical to extend the durability of perovskite solar cells. Here we introduced a sulfonium-based molecule, dimethylphenethylsulfonium iodide (DMPESI), for the post-deposition treatment of formamidinium lead iodide perovskite films. The treated films show improved stability upon light soaking and remains in the black alpha phase after two years ageing under ambient condition without encapsulation. The DMPESI-treated perovskite solar cells show less than 1% performance loss after more than 4,500 h at maximum power point tracking, yielding a theoretical T80 of over nine years under continuous 1-sun illumination. The solar cells also display less than 5% power conversion efficiency drops under various ageing conditions, including 100 thermal cycles between 25 degrees C and 85 degrees C and an 1,050-h damp heat test. Suo et al. show that sulfonium-based molecules afford formamidinium lead iodide perovskites protection against environmental stress factors, improved phase stability and solar cells retaining efficiency over 4,500-h operational stability tests.
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