In the article “A review on distributed energy resources and MicroGrid,” the authors, Jiayi, Chuanwen, and Rong, discuss the technology and implications of microgrid and distributed energy technologies. The authors make a strong case for the fact that the primary advantage of this technology, as discussed in the article, is its ability to operate while interconnected with the main power distribution grid, yet also operate in an island mode. They also give excellent evidence to support the claim that the economic implications of distributed energy may have a greater impact in the immediate future, while allowing for a greater reduction in expenses in the long term, as well as a reduction in the production of greenhouse gases. The authors claim that the ease of distribution among the main power distribution grid comes from the ability to regulate the way in which power is generated and consumed within the microgrid. During times that power is being generated and stored, such as in a system connected to a flywheel, energy capacitor, or battery bank, the concern for islanding phenomenon, in which the microgrid operates independently of the macrogrid, can be avoided. This statement is supported by two well-made points. First, by employing a power storage medium, the intermittency of renewable resources is simply bypassed. Second, by integrating the microgrid among the main power grid, energy surges, whether in surplus or deficiency, can be mitigated by smart power stations that manage energy flows. Excess power can be redirected and absorbed across the larger grid or sent to neighboring microgrid power storage centers. The immediate and long-term economic impacts of the employment of microgrids in large scale power generation grids is stated to have one major disadvantage, while employing a few possibly greater advantages. First, state the authors, the disadvantage is the initial cost related to the installation of new distributed systems. Furnishing a city block-sized community with a system would have an initial investment that would likely prove to take at least a decade to see any return. However, during the period before returns are seen, a significant amount of greenhouse gases could potentially be prevented by use of renewable power systems. In addition, following the return period, the investors, as well as potential residential customers, the authors say, would see little to no costs for the power and they would have a more reliable and robust form of electricity. The statements concerning the economics of distributed systems are well supported with historical data showing the cost of power over time and in relation to the cost of distributed systems. In addition, the authors also add a cost-ratio comparison for a hypothetical installation in a residential area. The graph shows the increase in savings over time. This article did an exceptional job of providing detailed data and graphs to support the authors claims. Their statements regarding the use of distributed energy microgrids and the benefits of such systems make clear sense. Downloaded from http://www.wikihow.com