Tariff regulation in the waste sector: An unavoidable future

Area of Science:

• Environmental Economics
• Public Utilities Regulation
• Waste Management Policy

Background:

• Waste management services often operate outside typical market forces, necessitating regulatory oversight.
• Ensuring service quality, affordability, and sustainability requires effective regulatory frameworks.
• The establishment of dedicated regulatory authorities for waste management is a developing practice globally.

Purpose of the Study:

• To analyze the role of economic regulation in Portugal's waste management sector.
• To propose and evaluate a novel tariff-setting mechanism for waste utilities.
• To ensure financial sustainability, efficiency, and quality of service standards in waste management.

Main Methods:

• Development of a performance-based tariff mechanism incorporating a productivity-related X factor.
• Calculation of the X factor using Data Envelopment Analysis (DEA) for static efficiency (catch-up factor).
• Calculation of dynamic efficiency using a Törnqvist index to assess production technology changes.

Main Results:

• The proposed tariff system aims to incentivize efficiency and added value in waste utilities.
• The methodology integrates financial sustainability with environmental and quality of service objectives.
• The study identifies challenges and opportunities in implementing this innovative regulatory approach.

Conclusions:

• Economic regulation is essential for the waste sector due to potential market failures and lack of incentives.
• A performance-based tariff system, like the one proposed, can prevent inefficiency and ensure service quality.
• The innovative application of DEA and Törnqvist index for X factor calculation offers a robust regulatory tool.