Intelligent Tech Channels Issue 13 | Page 41

INTELLIGENT GREEN TECHNOLOGY E lectrical power is essential. From the time when our alarm goes off in the morning to when we turn the lights off at night, we use electrical power. In terms of magnitude, each person in the US spends around $3,052 on electricity based on 2012 statistics. With a population of about 314 million people at the time, our energy habits equate to spending something in the order of $958 billion per year. Homes, businesses, healthcare, community infrastructure and educational institutions all rely on power. Yet, due to an aging infrastructure and increasing demand, our electrical grid is not as reliable or resilient as we need. In the face of major storms, grid outages, grid instabilities, cyber threats and other events, we need to be smarter and more cost-efficient about how we generate, manage, distribute and strengthen our power grids. With increased capacity of solar, wind, energy storage, combined heat and power and other distributed energy resources, there is an opportunity to optimise energy to support resiliency to critical areas. In addition, as technology and material costs for solar PV and energy storage have The costs to generate and store energy are decreasing, which is changing the nature of the utility grid from a centralised generation model to a distributed system of sources and loads. improved, it is now possible to generate reliable energy to improve grid resiliency at competitive market pricing levels. Over the last decade, microgrids have become an increasingly compelling means to not only keep the power on, but to manage distributed energy resources and energy costs. The primary trends driving microgrid growth include: Ÿ Ÿ Resiliency requirements stemming from extreme weather, power outages Ÿ Ÿ New business models for microgrid ownership involving multiple stakeholders Ÿ Ÿ Technology innovations enabling strategic energy management Ÿ Ÿ Opportunity for microgrids that support commercial and industrial customers Microgrids must be able to operate in parallel with the grid and as standalone electrical power systems that consist of multiple generating assets and often storage sources supplying loads, which can be powered independent of the primary utility transmission and distribution grid. Microgrids driving migration towards smart energy The falling costs of renewable energy sources has led to the development of controller based micro power grids as the way forward, according to a report by power management vendor Eaton. 41