The sustainability of the environment implies a dire need to redesign electricity systems. The aim of this paper is to evaluate the role of alternative fiscal incentives to promote renewable electricity. To this end, a disaggregated, electricity-related Computable General Equilibrium model is developed, taking the current structure of the (renewable and non-renewable) electricity sector into account. The Computable General Equilibrium model developed presents at least two advantages: the changes are analyzed from a global perspective (including impacts on prices), and second, rebound effects are accounted for. The fiscal measures examine three scenarios of change in line with the decarbonization processes of economies. Specifically, the scenarios assess: (1) a 100% decrease in renewable electricity taxes; (2) a 23% increase in taxes paid by the non-renewable electricity sector; and, (3) both together. In addition, these fiscal measures are evaluated assuming improvements in electricity self-generation. The case study is the Spanish economy for 2016. The Computable General Equilibrium model is calibrated on a symmetric input–output table, constructed from supply and use tables. These tables disaggregate the energy and electricity sectors. Results reveal the role and strength of fiscal policy in boosting the production of electricity generation technologies using green energy resources, and reducing the production of electricity generated from brown sources. However, results suggest that these effects are limited to the energy chain sectors, with insignificant effects in the whole economy. This study also provides better information and guidance to politicians and decision-makers who wish to promote renewables, and the need to have a clear understanding of the influence price competitiveness has on the economy. Moreover, the results of this study have implications for rebound effects when electricity self-generation is implemented.

环境的可持续性意味着迫切需要重新设计电力系统。本文的目的是评估替代财政激励措施在促进可再生电力方面的作用。为此，考虑到（可再生和不可再生）电力部门的当前结构，开发了一个分解的、与电力相关的可计算一般均衡模型。开发的可计算一般均衡模型至少有两个优点：从全局角度分析变化（包括对价格的影响），第二，考虑了反弹效应。财政措施根据经济体的脱碳进程检查了三种变化情景。具体而言，情景评估：(1) 可再生电力税降低 100%；(2) 不可再生电力部门缴纳的税款增加 23%；并且， (3) 两者都在一起。此外，这些财政措施是在假设电力自产改善的情况下进行评估的。案例研究是 2016 年的西班牙经济。可计算一般均衡模型基于对称的投入产出表进行校准，该表由供应和使用表构成。这些表格对能源和电力部门进行了分解。结果揭示了财政政策在促进使用绿色能源的发电技术的生产和减少棕色能源发电方面的作用和强度。然而，结果表明这些影响仅限于能源链部门，对整个经济的影响不显着。该研究还为希望推广可再生能源的政治家和决策者提供了更好的信息和指导，并需要清楚地了解价格竞争力对经济的影响。此外，这项研究的结果对实施自发电时的反弹效应有影响。