There is a new trend taking place with energy transmission and storage. Microgrids have a new take on how we can generate, store, and distribute our energy. This concept is making us all take another look at our mass centralized generation and distribution system.
Most of our electricity today comes from large coal or natural gas fired power plants. From this central power plant the electricity can travel hundreds of miles along transmission lines before it gets to your house. There are definitely some benefits to using this method of energy production. For one you can gain a lot of efficiency and cost saving by having one or two large turbines and generators. But there are also some problems with the current model. One problem that has always existed with form of distribution is that there are large costs associated with building and maintaining the transmission lines. Another problem is that when you transmit electricity over long distances of power lines, you can lose up to 3% of it in the form of heat and electromagnetic energy. A problem that is only recently being realized with this process is that traditional grids are not really designed to handle large swings in generation. Historically this was not a problem, but with all of the new solar and wind energy entering the grid, it is becoming more and more of an issue.
A microgrid is a small localized grid that can be used to power a community or even a college campus. Microgrids usually consist of some method of producing their own energy, and usually have a method of storing the energy for later use. Often the source of energy for these microgrids is some form of renewable energy such as wind or solar. There are some microgrids that generate electricity by burning one thing or another, but typically with these systems, they are able to capture the waste heat and use it for heating other buildings in the community. By using the waste heat, they are able to significantly increase the efficiency of the system. There are downsides if these types of grids just like with anything else. If you have multiple microgrids covering multiple areas there will be a lot of redundant equipment and therefore wasted resources.
Please leave me a comment and let me know what you think about microgrids.