With a growing trend toward decentralized renewable energy (DRE) systems, the global energy landscape is changing dramatically. These systems have emerged as a viable solution to address two critical global challenges: rural electrification and energy equity. Reliable power is unavailable to millions of people, especially in rural and underdeveloped areas, which impairs economic development, healthcare, education, and general quality of life. Decentralized renewable energy systems offer a sustainable, cost-effective, and scalable approach to bridging this energy access gap. This review examines the growing importance of DRE systems in expanding energy access while contributing to environmental sustainability. By analyzing key technological advancements, policy frameworks, and socio-economic impacts, this study highlights how decentralized energy solutions can drive inclusive development. Emerging technologies such as microgrids, standalone solar home systems, and hybrid renewable energy configurations play a crucial role in ensuring energy security. Additionally, supportive government policies, innovative financing mechanisms, and community-based energy models are vital in accelerating the adoption of DRE solutions. Additionally, the efficiency and dependability of decentralized energy systems have been improved by the integration of digital tools, smart grid technology, and energy storage solutions. These advancements not only reduce dependency on fossil fuels but also promote local economic opportunities through job creation and entrepreneurship. Despite their potential, DRE systems face challenges such as high initial costs, technical constraints, and policy uncertainties. Addressing these barriers requires multi-stakeholder collaboration, investment in research and development, and targeted policy interventions.

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1. International Energy Agency (IEA). World Energy Outlook 2021. Paris: IEA; 2021.
2. United Nations. The Sustainable Development Goals Report 2022. New York: United Nations; 2022.
3. Bhattacharyya SC. Rural electrification through decentralized off-grid systems in developing countries. Berlin: Springer; 2013.
4. Off-grid renewable energy solutions to expand electricity access: 2022 Status Report. Abu Dhabi: International Renewable Energy Agency (IRENA); 2022.
5. Sovacool BK. The political economy of energy poverty: A review of key challenges. Energy Sustain Dev. 2012;16(3):272-82.
6. World Bank. Energy Access Outlook 2022: Achieving Energy for All. Washington, DC: World Bank; 2022.
7. Bazilian M, Rogner H, Howells M, Hermann S, Arent D, Gielen D, et al. Considering the energy, water and food nexus: Towards an integrated modelling approach. Energy Policy. 2011;39(12):7896-906.
8. Pachauri S, van Ruijven BJ, Nagai Y, Riahi K, van Vuuren DP, Brew-Hammond A, et al. Pathways to achieve universal household access to modern energy by 2030. Environ Res Lett. 2013;8(2):024015.
9. Gómez MF, García J, Dopazo C, Fueyo N. Spanish policy to promote renewable electricity. Renew Sustain Energy Rev. 2011;15(1):122-8.
10. Zubi G, Dufo-López R, Carvalho M, Pasaoglu G. The necessity of storage technologies for enabling renewable energy-based power systems. Renew Energy. 2018;136:299-307.
11. Kirubi C, Jacobson A, Kammen DM, Mills A. Community-based electric micro-grids can contribute to rural development: Evidence from Kenya. World Dev. 2009;37(7):1208-21.
12. Trotter PA, McManus MC, Maconachie R. Electricity planning and implementation in sub-Saharan Africa: A systematic review. Renew Sustain Energy Rev. 2017;74:1189-209.
13. Das HK, Sarker SK, Rahman MM, Das CK. Standalone renewable energy systems: A review on technologies and applications. Renew Sustain Energy Rev. 2020;138:110801.
14. Parikh P, Chaturvedi S, George G. Empowering change: The effects of energy provision on individual aspirations in slum communities. Energy Policy. 2012;50:477-85.
15. Jacobson MZ. 100% Clean, Renewable Energy and Storage for Everything. Cambridge: Cambridge University Press; 2020.

With a growing trend toward decentralized renewable energy (DRE) systems, the global energy landscape is changing dramatically. These systems have emerged as a viable solution to address two critical global challenges: rural electrification and energy equity. Reliable power is unavailable to millions of people, especially in rural and underdeveloped areas, which impairs economic development, healthcare, education, and general quality of life. Decentralized renewable energy systems offer a sustainable, cost-effective, and scalable approach to bridging this energy access gap. This review examines the growing importance of DRE systems in expanding energy access while contributing to environmental sustainability. By analyzing key technological advancements, policy frameworks, and socio-economic impacts, this study highlights how decentralized energy solutions can drive inclusive development. Emerging technologies such as microgrids, standalone solar home systems, and hybrid renewable energy configurations play a crucial role in ensuring energy security. Additionally, supportive government policies, innovative financing mechanisms, and community-based energy models are vital in accelerating the adoption of DRE solutions. Additionally, the efficiency and dependability of decentralized energy systems have been improved by the integration of digital tools, smart grid technology, and energy storage solutions. These advancements not only reduce dependency on fossil fuels but also promote local economic opportunities through job creation and entrepreneurship. Despite their potential, DRE systems face challenges such as high initial costs, technical constraints, and policy uncertainties. Addressing these barriers requires multi-stakeholder collaboration, investment in research and development, and targeted policy interventions.

🔒 This is a subscription article

Full text is available to subscribers and institutional members. Please choose an option below to access it.

1. International Energy Agency (IEA). World Energy Outlook 2021. Paris: IEA; 2021.
2. United Nations. The Sustainable Development Goals Report 2022. New York: United Nations; 2022.
3. Bhattacharyya SC. Rural electrification through decentralized off-grid systems in developing countries. Berlin: Springer; 2013.
4. Off-grid renewable energy solutions to expand electricity access: 2022 Status Report. Abu Dhabi: International Renewable Energy Agency (IRENA); 2022.
5. Sovacool BK. The political economy of energy poverty: A review of key challenges. Energy Sustain Dev. 2012;16(3):272-82.
6. World Bank. Energy Access Outlook 2022: Achieving Energy for All. Washington, DC: World Bank; 2022.
7. Bazilian M, Rogner H, Howells M, Hermann S, Arent D, Gielen D, et al. Considering the energy, water and food nexus: Towards an integrated modelling approach. Energy Policy. 2011;39(12):7896-906.
8. Pachauri S, van Ruijven BJ, Nagai Y, Riahi K, van Vuuren DP, Brew-Hammond A, et al. Pathways to achieve universal household access to modern energy by 2030. Environ Res Lett. 2013;8(2):024015.
9. Gómez MF, García J, Dopazo C, Fueyo N. Spanish policy to promote renewable electricity. Renew Sustain Energy Rev. 2011;15(1):122-8.
10. Zubi G, Dufo-López R, Carvalho M, Pasaoglu G. The necessity of storage technologies for enabling renewable energy-based power systems. Renew Energy. 2018;136:299-307.
11. Kirubi C, Jacobson A, Kammen DM, Mills A. Community-based electric micro-grids can contribute to rural development: Evidence from Kenya. World Dev. 2009;37(7):1208-21.
12. Trotter PA, McManus MC, Maconachie R. Electricity planning and implementation in sub-Saharan Africa: A systematic review. Renew Sustain Energy Rev. 2017;74:1189-209.
13. Das HK, Sarker SK, Rahman MM, Das CK. Standalone renewable energy systems: A review on technologies and applications. Renew Sustain Energy Rev. 2020;138:110801.
14. Parikh P, Chaturvedi S, George G. Empowering change: The effects of energy provision on individual aspirations in slum communities. Energy Policy. 2012;50:477-85.
15. Jacobson MZ. 100% Clean, Renewable Energy and Storage for Everything. Cambridge: Cambridge University Press; 2020.