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Applying the UNECE PIERS Evaluation Methodology for the SDGs to Support the Implementation of Green PPP Projects and Infrastructure: Lessons from Slovenia

UNECE PIERS評価方法論のSDGsへの適用：スロベニアにおけるグリーンPPPプロジェクトの事例 (AI 翻訳)

Ferk P

Research Squareプレプリント2026-06-04#政策Origin: EU
DOI: 10.20944/preprints202606.0342.v1
原典: https://doi.org/10.20944/preprints202606.0342.v1

🤖 gxceed AI 要約

日本語

本研究は、UNECE PIERS評価システムをスロベニアの3つのグリーンPPPプロジェクト（エネルギー効率、再生可能エネルギー、持続可能モビリティ）に適用し、SDGs達成への貢献を評価した。5次元のスコアリングにより、全体の持続可能性は高いが、ステークホルダー関与が制度的制約により弱いことが判明。PIERSはSDGsをPPP管理に統合する体系的枠組みを提供する。

English

This study applies the UNECE PIERS evaluation methodology to three green PPP projects in Slovenia (energy efficiency, renewable energy, sustainable mobility). It finds strong sustainability performance but weak stakeholder engagement due to institutional constraints. PIERS offers a systematic framework for integrating SDGs into PPP management, contributing empirical evidence for sustainable public-investment governance.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本でもグリーンPPPやGXインフラへの関心が高まる中、PIERSのような評価枠組みは参考になる。特にステークホルダー関与の課題は日本でも共通であり、制度設計に示唆を与える。

In the global GX context

This paper provides empirical evidence on using the UNECE PIERS framework for green PPPs, offering insights for global adoption of SDG-aligned infrastructure governance. It highlights stakeholder engagement as a critical weakness, relevant for countries implementing similar evaluation systems.

👥 読者別の含意

🔬研究者:Provides a case study application of PIERS methodology, useful for further research on green PPP evaluation frameworks.

🏢実務担当者:Offers a practical example of how to use PIERS to assess sustainability in green PPP projects, with lessons on stakeholder engagement.

🏛政策担当者:Demonstrates how PIERS can support SDG alignment in infrastructure governance, informing policy design for green PPPs.

📄 Abstract（原文）

Robust evaluation methods are essential for assessing the sustainability of public–private partnerships (PPPs) and advancing the Sustainable Development Goals (SDGs). This study examines the United Nations Economic Commission for Europe (UNECE) People-first PPP and Infrastructure Evaluation and Rating System (PIERS) through three green PPP initiatives in Slovenia, focusing on energy efficiency, renewable energy and sustainable mobility. Using structured scoring across five dimensions—access and equity, economic effectiveness, environmental sustainability, replicability and stakeholder engagement—the analysis considers project-level performance, national SDG alignment and methodological applicability. The results indicate strong overall sustainability performance, but identify stakeholder engagement as a significant weakness, largely due to institutional constraints. Comparison with Slovenia’s national SDG progress in 2023–2025 shows broad alignment between project outcomes and wider sustainability achievements. The methodological review also identifies scope for improving the applicability and adaptability of PIERS indicators. Although primarily designed as a self-assessment tool, PIERS provides a systematic framework for integrating SDG principles into PPP management, especially in relation to SDGs 7, 9, 11 and 13. The study contributes empirical evidence and methodological insights for more sustainable public-investment governance.

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