Accelerating Decarbonization in Public Institutions: A Scalable Model for LED Lighting Retrofits
公共機関における脱炭素化の加速：LED照明改修のためのスケーラブルモデル (AI 翻訳)
Wei Gao, Raymond Chong Ong Tang, Hwai Chyuan Ong
🤖 gxceed AI 要約
日本語
マレーシアの大学校舎を対象に、従来の蛍光灯をLEDに交換する照明改修のエネルギー・経済・環境影響を評価。1831台の照明器具を監査し、LED代替により年間44.7%の電力量削減（70,810kWh）を達成。投資回収期間は1.9～2.2年で、10年間で約130トンのCO2削減を見込む。教育施設における構造的かつスケーラブルな改修フレームワークを提示。
English
This study assesses LED lighting retrofits for a university building in Malaysia. It finds that replacing 1831 fluorescent lamps with LEDs reduces annual lighting energy use by 44.7% (70,810 kWh). Payback periods range from 1.90 to 2.21 years, and cumulative CO2 reductions over 10 years are about 130 tons. The work provides a scalable framework for decarbonizing public institutions through energy efficiency.
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
日本では公共施設のLED化が進んでいるが、本論文は改修前後の詳細なエネルギー監査とLCC分析に基づく系統的手法を提供しており、自治体や大学の脱炭素計画の根拠として活用できる。特に、投資回収期間が短い点は、予算制約のある公共機関にとって有力なエビデンスとなる。
In the global GX context
This paper presents a replicable methodology for lighting retrofits in public institutions, combining energy auditing, life-cycle cost analysis, and emission reduction quantification. While the case is from Malaysia, the framework is directly applicable to universities and government buildings globally, supporting net-zero targets through cost-effective energy efficiency measures.
👥 読者別の含意
🔬研究者:Provides a structured audit and modeling approach for energy efficiency retrofits in institutional buildings.
🏢実務担当者:Offers a clear business case with short payback periods and quantified savings for facility managers and sustainability teams.
🏛政策担当者:Demonstrates that lighting retrofits can deliver rapid economic and environmental returns, supporting public sector decarbonization policies.
📄 Abstract（原文）
Public and educational institutions represent a significant share of global electricity consumption and play a critical role in achieving national decarbonization targets. This study addresses this challenge by conducting a comprehensive lighting retrofit assessment for a university engineering building in Malaysia, with the objective of evaluating the energy, economic and environmental impact of replacing conventional fluorescent lighting with light-emitting diode (LED) technology. A methodology was adopted, comprising a detailed on-site lighting audit, development of LED replacement scenarios, energy consumption modelling based on operating profiles, life-cycle cost (LCC) and payback period analyses, emission reduction assessment using national grid emission factors and sensitivity analysis to test economic robustness under varying assumptions. A total of 1831 luminaires were audited, establishing a baseline annual lighting consumption of 158,410 kWh. Retrofit simulations indicate that replacing existing fluorescent and CFL lamps with LED alternatives reduces daily lighting energy use from 434 kWh to 240 kWh, corresponding to annual energy savings of 70,810 kWh or 44.7%. Financial analysis demonstrates strong economic viability, with payback periods of 2.21 years (20W_LED), 2.14 years (10W_LED) and 1.90 years (9W_LED). Over a 10-year assessment horizon, cumulative cost savings exceed RN225000, driven by reduced electricity consumption and lower maintenance requirements resulting from LED lifespans of up to 50,000 h. Environmentally, the retrofit yields cumulative emission reductions of approximately 130,285 kg CO2, 408 kg SO2, 275 kg NOx and 106 kg CO over 10 years, supporting national objectives to reduce greenhouse gas intensity and improve urban air quality. Overall, the study provides a structured, scalable and evidence-based framework for LED lighting retrofits in educational buildings, demonstrating that lighting upgrades can deliver rapid economic returns while contributing meaningfully to long term decarbonization goals
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.53941/gefr.2026.100008first seen 2026-07-02 07:44:24
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