Sustainable Integrated Grid Initiative (SIGI)


The Sustainable Integrated Grid Initiative was developed specifically to research and implement systems that demonstrate the successful integration of intermittent renewable energy, energy storage, and all types of electric and hybrid electric vehicles. Now in its fourth year of operation, the research testbed continues to assist researchers in analyzing the operations of microgrid systems under different conditions and for different installation types using a highly reconfigurable system consisting of interchangeable technology prototypes and an open source energy management platform.

    • Four megawatts of solar photovoltaic panels
    • Two megawatt-hours of battery energy storage
    • Twenty-seven electric vehicle charging stations
    • An electric-powered trolley service
    • Energy monitoring and smart dispatch
    • Open architecture designed for expansion
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The testbed is ideally suited for the researching and testing of different strategies and technologies in the real world, from building to neighborhood scale applications.

    • Demonstrate zero net energy office building use
    • Demonstrate zero net energy office building use with 7% EV users
    • Assist the local utility to avoid brown out conditions by providing power to the grid without reducing operations
    • Perform a cost impact analysis of level 3 chargers on a typical office building, and to develop strategies to reduce the cost impact
    • Gather data on the performance of solar panels under various weather conditions
    • Optimize the performance and lifetime of lithium ion batteries used for smart grid applications
    • Reduce the UCR electric bill by up to 40% using storage with renewables
    • Determine how EVs impact the grid, and how to mitigate their impact using battery storage
    • Determine the typical profile of use of light duty EVs in the City of Riverside
    • Demonstrate a fully electric transit trolley in the City of Riverside
    • Demonstrate demand side management to reduce electrical costs by 20%