
The U.S. Department of Energy''s defines a microgrid as "a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid. A microgrid can connect and disconnect from the grid to enable it to operate in both grid-connected or island-mode.'''' [2] Microgrids typically contain distributed energy resources, energy storage, distribution infrastructure, and a microgrid controller.
Community microgrids are still far from plug and play, but we''re seeing many more of them being announced. Climate change and natural disasters are a big driver. Microgrids offer an effective one-two climate protection punch for communities that want to convert to cleaner energy to meet long term sustainability goals but also must find immediate ways to keep the lights on when storms, wildfires, droughts and other calamities threaten the grid.
Here we highlight eight community microgrids that are breaking new ground. There are many more — especially through government or utility sponsored programs in places like California, New Jersey and Maryland. So it was hard to cull the list. We chose these eight projects — some operating, some still being built — because we were struck by their origins, ambition, unique features and forward looking approach. Here they are in no particular order.
Located just outside of Boston, this microgrid-in-planning provides an example of what can be accomplished when city officials and community groups join forces for the greater good. Most fascinating, this is a "microgrid without borders," meaning it''s being designed not just for use by one or two critical buildings but for as many Chelsea residents as possible. To get a sense of some of the philosophical underpinnings of the microgrid, check out the book "Hope" by David Sayre, a consultant to the project. Massachusetts City Plans "Microgrid without Borders"
Growing concerns about energy security, rising costs, and climate change are prompting communities to seek innovative energy solutions. One such solution gaining momentum is the microgrid—decentralised energy systems that operate independently from traditional grids. As communities become more invested in local energy management, the advantages of community microgrids become clear: They offer greater resilience, sustainability, and energy autonomy and can revolutionise how communities generate, manage, and consume electricity.
Microgrids are localised energy systems that function autonomously or with traditional power grids. They are designed to generate, distribute, and manage energy within a specific area, such as a neighbourhood, university campus, or industrial facility.
In essence, the advantages of community microgrids lie in their ability to provide reliable energy, even in cases of grid failure, allowing communities to have greater control over their energy use and sources.
Microgrids can operate freely from the main grid, making them a reliable energy source during outages. This is particularly valuable for critical infrastructure like hospitals, military bases, and communication networks, which require constant power.
Microgrids empower communities by reducing reliance on the centralised grid. This localised control allows communities and businesses to generate their power, ensuring energy security and minimising vulnerability to disruptions. Operating independently gives communities a sense of autonomy and control over their energy supply.
Microgrids can reduce energy costs by decreasing dependency on the primary grid during peak demand periods. By adopting locally generated energy, communities can avoid expensive peak energy charges.
Another main advantage of community microgrids is the ability to integrate clean energy sources like solar and wind power. It reduces greenhouse gas emissions & contributes to maintain sustainability. Microgrids play a vital role in environmental sustainability by enabling communities to shift to cleaner energy sources.
Microgrids can stimulate local economies by creating jobs and attracting investment. Building and maintaining these systems often requires local expertise and resources, providing economic opportunities for the community.
Microgrids foster community engagement and empowerment. They promote social cohesion and collaboration by enabling residents to participate in energy decisions. Communities become more self-reliant, reducing dependence on large, centralised utility companies.
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