Alaska Microgrid Projects: Many remote villages in Alaska are only accessible by air or seasonal ice roads, making them ideal candidates for microgrids. The state has invested heavily in microgrid projects to provide reliable renewable energy to these communities and reduce their dependence on costly diesel generation. One of the largest microgrid projects is in Kotzebue, which includes 4 MW of wind power, 2.4 MW of solar PV, and 2 MW/4 MWh of battery storage. This has replaced over 1 million gallons of diesel per year. Another large project is in Utqiagvik (Barrow), the northernmost city in the U.S., which includes 3 MW of wind power and 1 MW of battery storage. These have helped lower energy costs while reducing diesel use and emissions.

Island Microgrids in Hawaii: As an island state dependent on imported fossil fuels, Hawaii has been a leader in developing resilient microgrids powered by renewable energy. The University of Hawaii has microgrids on several of its campuses across the islands with solar PV, battery storage, and backup diesel generators. Kauai Island Utility Cooperative has one of the most advanced microgrid systems in the U.S., utilizing over 50% renewable energy including 12 MW of solar, 6 MW of hydropower, and 21 MWh of battery storage across the island. After hurricanes Iniki (1992) and Irene (2011), it demonstrated its ability to blackstart the entire electrical grid from dispersed generators.

Pescopagano Microgrid in Italy: This village in Southern Italy has developed an entirely renewable energy microgrid without connection to the main electric grid. It includes 600 kW of solar PV, 560 kW of biogas cogeneration, 280 kW of hydropower, and 200 kWh of battery storage. All the village’s energy needs are met through this sustainable microgrid, which is managed through an advanced control system. It has significantly lowered energy costs for residents while reducing CO2 emissions by 700 tons annually and eliminating reliance on diesel generators. The success of this off-grid microgrid provides a model for other remote communities.

Baker Park Microgrids in South Africa: As part of an effort to expand electricity access across South Africa, Eskom has developed microgrids in remote areas like Baker Park that were difficult to connect to the national grid. The microgrid here includes 200 kW of solar PV, 150 kW of energy storage, and a 70 kW backup diesel generator. It provides reliable power for the community while achieving 60% renewable energy penetration. Similar microgrid installations in other towns have allowed over 100,000 South Africans to gain electricity access for the first time in a sustainable and cost-effective manner.

Ballenas Islands Microgrid in Chile: This microgrid powers the tiny Ballenas Islands archipelago off the coast of Chile with 100% renewable energy. It includes 200 kW of solar PV and 150 kWh of lithium-ion battery storage to meet all power needs around the clock for the island’s scientific research station. The successful project demonstrates the potential for remote communities around the world to transition to self-sufficient green energy systems without dependency on polluting and costly fuels like diesel. It also serves as a model for much larger isolated grids.

There are many other examples of microgrids having significant positive impacts across regions from Europe and Asia to Africa, Latin America, and small island nations. By enabling higher penetrations of renewable energy and greater resiliency through the targeted use of energy storage and intelligent monitoring/controls, microgrids are playing a vital role in transitioning energy systems worldwide to become more sustainable, affordable, and secure against disruptions from extreme weather or other threats. Their continued growth will be important for lowering emissions and expanding access to clean power.

Microgrids have clearly demonstrated their technical and economic viability through real-world implementation around the globe. By maximizing local renewable resources, they provide energy independence and reliability while reducing costs and carbon footprints for communities large and small. As technologies advance further and their benefits become more evident, microgrid deployment will surely continue increasing to empower sustainable development in both developed and developing markets.