Energy Efficiency Infrastructure and Regulatory Readiness for Small-Scale Industrial Buildings in Tanzania: A Systematic Review of Technologies, Policy Gaps, and Implementation Pathways

Authors

  • Gerald Rukanda * Department of Electrical and Power Engineering, Mbeya University of Science and Technology, P.O. Box 131, Mbeya, Tanzania.
  • Isaka Mwakitalima Department of Electrical and Power Engineering, Mbeya University of Science and Technology, P.O. Box 131, Mbeya, Tanzania.

https://doi.org/10.22105/jeee.v3i1.61

Abstract

Small-scale industrial buildings are vital to Tanzania’s local manufacturing, agro-processing, and employment sectors, but their energy efficiency is hampered by inefficient motors, poor lighting, limited metering, inadequate maintenance, weak audit practices, and fragmented regulations. A systematic review was employed to assess energy efficiency infrastructure and policy readiness in these buildings, focusing on technologies, policy gaps, barriers, and implementation strategies. Using a PRISMA-guided approach, literature was selected from ScienceDirect, Google Scholar, and supported by policy and standards documents. Out of 10,112 records plus 53 additional sources, 105 studies and documents were included in the analysis. The review indicates significant energy savings are possible through the adoption of high-efficiency motors, variable-speed drives, LED lighting, power-factor correction, leak control in compressed air, efficient refrigeration, improved building envelopes, heat recovery, smart meters, and simpler energy management systems. Yet, barriers such as poor baseline data, limited funding, low awareness, technical skill gaps, fragmented institutional roles, and weak enforcement hinder implementation. The study offers an integrated framework connecting baseline auditing, benchmarking, loss detection, technology choices, funding, regulation, monitoring, verification, and ongoing improvement. Future research should develop standardized energy-use benchmarks and evaluate cost-effective retrofit models for Tanzanian small industrial facilities. These insights support data-driven policies to promote a sustainable industrial energy transition nationwide.

Keywords:

Energy efficiency, Small-scale industrial buildings, Regulatory readiness, Energy audit, Smart metering

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2026-03-25

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Vol. 3 No. 1 (2026): Journal of Environmental Engineering and Energy (JEEE)

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Rukanda, G. ., & Mwakitalima, I. . (2026). Energy Efficiency Infrastructure and Regulatory Readiness for Small-Scale Industrial Buildings in Tanzania: A Systematic Review of Technologies, Policy Gaps, and Implementation Pathways. Journal of Environmental Engineering and Energy, 3(1), 66-89. https://doi.org/10.22105/jeee.v3i1.61

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