What the study found
Greater eco-coherence — alignment among environmental tax revenues, environmental protection spending, and renewable energy consumption — was associated with lower pollution costs in six Mediterranean economies.
Why the authors say this matters
The authors conclude that the study offers a different way to assess environmental policy effectiveness by focusing on sustained fiscal commitment and renewable energy adoption. They also suggest regional alignment is needed to preserve gains and prevent deterioration that could weaken environmental and economic progress.
What the researchers tested
The study examined six Mediterranean economies — France, Italy, Malta, Slovenia, Greece, and Croatia — from 2000 to 2023. It used the Kuramoto Dynamic Model to assess synchronization among environmental tax revenues, environmental protection spending, and renewable energy consumption, then linked that synchronization to pollution cost through a feedback loop. It also used a Cross Sectionally Augmented Nonlinear Autoregressive Distributed Lag model to examine asymmetric short-run and long-run responses of pollution cost to positive and negative shocks in the three instruments.
What worked and what didn't
The results show that greater eco-coherence corresponds to lower pollution costs. Renewable energy consumption had the greatest influence on system eco-coherence. The asymmetric estimates suggest that decreases in renewable energy consumption or fiscal measures have a more negative effect on pollution cost than the improvement achieved by an equivalent increase.
What to keep in mind
The abstract does not provide detailed limitations. The findings are based on six Mediterranean economies and the 2000–2023 period, so the scope is limited to that sample.
Key points
- The study found that stronger alignment among fiscal and energy policies was linked to lower pollution costs.
- Renewable energy consumption was the main driver of system eco-coherence in the analysis.
- Reductions in renewable energy use or fiscal measures had a more negative effect than equal-sized increases had a positive effect.
- The analysis covered France, Italy, Malta, Slovenia, Greece, and Croatia from 2000 to 2023.
- The authors frame the approach as a different way to measure environmental policy effectiveness.
Disclosure
- Research title:
- Eco-coherent fiscal and energy policies are linked to lower pollution costs
- Authors:
- Dhyani Mehta, Nikunj Patel
- Institutions:
- Pandit Deendayal Energy University, Nirma University
- Publication date:
- 2026-02-26
- OpenAlex record:
- View
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