The recent transition towards sustainable energy resources, aiming for the decarbonisation of the electrical power sector has gained global and regional importance. Therefore, there is a great need to create roadmaps to efficiently achieve this goal. In this regard, this paper evaluates the spatial and temporal complementarity between solar and wind energy in Algeria for different timescales. To this end, a grid with 0.5° x 0.5° spatial resolution that covers the Algerian territory is created and then representative datasets of wind speed and solar radiation were obtained for each point. The Spearman’s rank correlation coefficient is applied as an index to measure the relationship between the underlying resources. The results of this work indicate the existence of moderate complementarity on daily timescale in the coastal regions. The highest complementarity is observed in the province of Annaba, with a complementarity index equals −0.52. Whereas, the south of the country is characterized by synchronised solar and wind resources. Further analysis reveals that the assessment of complementarity based on power generation or resource potential leads almost to the same results. The relationship analysis shows good concordance with a determination coefficient of 0.98, which means that the components specifications have a low impact on the complementarity index. Additionally, dispersed wind systems show a promising smoothing effect, while less spatial complementarity is observed for solar-solar and solar-wind scenarios. The analysis performed in this paper provides informative guidelines for future investments in Algeria by identifying sites with the highest complementarity between solar and wind resources.

旨在实现电力部门脱碳的最近向可持续能源的过渡已经在全球和区域范围内变得越来越重要。因此，迫切需要创建路线图以有效地实现此目标。在这方面，本文评估了阿尔及利亚不同时标的太阳能和风能之间的时空互补性。为此，创建了一个覆盖阿尔及利亚领土的空间分辨率为0.5°x 0.5°的网格，然后获得了每个点的风速和太阳辐射的代表性数据集。Spearman等级相关系数用作衡量基础资源之间关系的指标。这项工作的结果表明，沿海地区在日常时间尺度上存在适度的互补性。在安纳巴省观察到最高的互补性，互补性指数等于-0.52。而该国南部的特点是太阳能和风能资源同步。进一步的分析表明，基于发电量或资源潜力的互补性评估几乎可以得出相同的结果。关系分析显示出良好的一致性，确定系数为0.98，这意味着组件规格对互补指数的影响很小。此外，分散的风系统显示出有希望的平滑效果，而在太阳能和太阳风场景中观察到的空间互补性较小。