Implementing Microgrids David Carter PE Managing Research Engineer

Implementing Microgrids David Carter PE Managing Research Engineer, Schatz Energy Research Center California Energy Commission North Coast Energy Perspectives Workshop Source: Fast Company Source: REC Solar Adapted and used with permission from Siemens Implementing Microgrids Copyright © 2018 Schatz Energy Research Center April 20, 2018

Outline § What did it take to implement the BLR Microgrid? § How is the ACV Airport Renewable Microgrid Different? § How are we going to implement the ACV Airport Renewable Microgrid? § What are the biggest challenges we face? § Value of ACV Airport Renewable Microgrid Project locally and statewide Implementing Microgrids April 20, 2018 2

Implementing the BLR Microgrid § Complex integration of interdependent systems § Careful coordination among many partners § Very tight timeline § Significant risk to site host § Atypical interconnection Implementing Microgrids April 20, 2018 3

How is the ACV Airport Microgrid Different? BLR Microgrid End of feeder line Single customer Behind-the-meter BLR owns infrastructure, generation, & storage ACV Microgrid End of feeder line 18 customers In-front-of-the-meter PG&E owns infrastructure RCEA owns generation & storage MG Single Customer P C C Substation = point of common coupling Implementing Microgrids April 20, 2018 4

Implementing the ACV Airport Microgrid § 2018: Contracting, design, and procurement § 2019: Continue design and procurement, start tariff development, interconnection process, and phase 1 construction § 2020: Continue tariff development and interconnection, start lab testing controls and phase 2 construction, commissioning § 2021: Microgrid operational, collect data to quantify benefits and validate business model, report out results Implementing Microgrids April 20, 2018 5

Biggest Challenges with ACV Airport Microgrid § Demonstrate Business Case § Project Integration § Technology and Contracts § Electrical and Controls Engineering § Complex Energy Transactions § Cyber Security § Interconnection Pathway § Megawatt scale DC Coupling of solar PV and battery storage Implementing Microgrids April 20, 2018 6

Value of ACV Airport Microgrid Locally and Statewide § Build IOU Capacity § Demonstrate IOU/CCA partnership model § Demonstrate increased resilience for critical facility § Demonstrate microgrids ability to provide grid services § Demonstrate technology advancement § Demonstrate a replicable business model for microgrids Implementing Microgrids April 20, 2018 7

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