Quantitative synergy assessment of regional wind-solar energy resources based on MERRA reanalysis data

Zhang, Hengxu; Cao, Yongji; Zhang, Yi; Terzija, Vladimir

doi:10.1016/j.apenergy.2018.02.094

Cited by 110 publications

(52 citation statements)

References 49 publications

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“…Several criteria exist for how mixing different RE sources can positively impact power systems, such as through smoothing (reducing variability) of power output [43,44,47,49] or supply-demand balance [41,42,45,48,59], or lowering system costs [50,[60][61][62]. These are usually interlinked: e.g.…”

Section: Power Mixesmentioning

confidence: 99%

“…To quantify hybrid power output smoothness, many studies use statistical measures, such as (anti) correlation coefficients between power production from different resources [40,43,44,47,59], or variabilities of energy balance shapes, assuming (multi)annual average power production is equal to average demand [41][42][43]48]. Such approaches have been valuable in exploring synergies between renewable resources in various regions.…”

Section: Power Mixesmentioning

confidence: 99%

“…Here, we attempt to address these issues by introducing a new metric, the stability coefficient C stab , which represents the reduction in the coefficient of variance (c v ) [43][44][45]49] on diurnal timescales of the CF of a hybrid solar/wind system with equal capacity for solar and wind (1:1 capacity ratio), as compared to a solar-only system. It is thus a measure of the added value of wind power to balance daily electric power production from solar PV.…”

Section: Locations Where Resources Are Complementarymentioning

confidence: 99%

“…To our knowledge, this study is the first time a hybrid metric like C stab , combining information on complementarity and on CF, has been benchmarked against using average CF maps. The coefficient of variation itself [43][44][45]49], on which C stab is based, or alternative fluctuation indices [64] have been used before to quantify resource complementarities, but none of these works studied the implications of combining such metrics with information on CFs. The mathematical hybrid index for synergies presented by [65] goes in this direction, but it works optimally only if power output shapes are sinusoids, and its implications for RE potential estimation vis-à-vis using average CF maps were not studied.…”

Section: Locations Where Resources Are Complementarymentioning

confidence: 99%

“…This study is aimed at going beyond these averages by proposing a new metric for quantifying the synergies between solar PV and wind power potential for hybrid systems on diurnal and seasonal scales, and demonstrating its implications for the West African context. Solar/ wind power mixes have received substantial attention recently [38][39][40][41][42][43][44][45][46][47][48][49], but assessments for WA, such as [50], are rare. This paper is organised as follows.…”

Section: Introductionmentioning

confidence: 99%

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A new approach for assessing synergies of solar and wind power: implications for West Africa

Sterl

Liersch

Koch

et al. 2018

Environ. Res. Lett.

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West African countries' energy and climate policies show a pronounced focus on decarbonising power supply through renewable electricity (RE) generation. In particular, most West African states explicitly focus on hybrid mixes of variable renewable power sources-solar, wind and hydropower-in their targets for the electricity sector. Hydropower, the main current RE resource in West Africa, is strongly sensitive to monsoon rainfall variability, which has led to power crises in the past. Therefore, solar and wind power could play a stronger role in the future as countries move to power systems with high shares of RE. Considering the policy focus on diversified RE portfolios, there is a strong need to provide climate services for assessing how these resources could function together in a power mix. In this study, climate data from the state-of-the-art ERA5 reanalysis is used to assess the synergies of solar photovoltaic (PV) and wind power potential in West Africa at hourly resolution. A new metric, the stability coefficientC stab , is developed to quantify the synergies of solar PV and wind power for achieving a balanced power output and limiting storage needs. Using this metric, it is demonstrated that there is potential for exploiting hybrid solar/wind power in a larger area of West Africa, covering more important centers of population and closer to existing grid structures, than would be suggested by average maps of solar and wind resource availability or capacity factor for the region. The results of this study highlight why multi-scale temporal synergies of power mixes should be considered in RE system planning from the start.

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Section: Power Mixesmentioning

confidence: 99%

Section: Power Mixesmentioning

confidence: 99%

Section: Locations Where Resources Are Complementarymentioning

confidence: 99%

Section: Locations Where Resources Are Complementarymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A new approach for assessing synergies of solar and wind power: implications for West Africa

Sterl

Liersch

Koch

et al. 2018

Environ. Res. Lett.

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A Mechanistic Overview of the Current Status and Future Challenges of Aluminum Anode and Electrolyte in Aluminum‐Air Batteries

Nayem

Islam

Mostafa

et al. 2023

The Chemical Record

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Aluminum‐air batteries (AABs) are regarded as attractive candidates for usage as an electric vehicle power source due to their high theoretical energy density (8100 Wh kg−1), which is considerably higher than that of lithium‐ion batteries. However, AABs have several issues with commercial applications. In this review, we outline the difficulties and most recent developments in AABs technology, including electrolytes and aluminum anodes, as well as their mechanistic understanding. First, the impact of the Al anode and alloying on battery performance is discussed. Then we focus on the impact of electrolytes on battery performances. The possibility of enhancing electrochemical performances by adding inhibitors to electrolytes is also investigated. Additionally, the use of aqueous and non‐aqueous electrolytes in AABs is also discussed. Finally, the challenges and potential future research areas for the advancement of AABs are suggested.

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Synergy level measurement and optimization models for the supply-transmission-demand-storage system for renewable energy

Yu,

You,

Zhou

et al. 2024

Ann Oper Res

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Quantitative synergy assessment of regional wind-solar energy resources based on MERRA reanalysis data

Cited by 110 publications

References 49 publications

A new approach for assessing synergies of solar and wind power: implications for West Africa

A new approach for assessing synergies of solar and wind power: implications for West Africa

A Mechanistic Overview of the Current Status and Future Challenges of Aluminum Anode and Electrolyte in Aluminum‐Air Batteries

Synergy level measurement and optimization models for the supply-transmission-demand-storage system for renewable energy

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