Electrical Distribution System Basics Normal Electrical Utility Operation Normal and Standby Power Emergency Power Operations Backup Power Operations

Combustion Turbine Generator Emergency Diesel Generators BASIC ELECTRICAL DISTRIBUTION SYSTEM CPS EWEB UO Substation Feeders 1 2 Combustion Turbine Generator 3 4 9 10 11 Campus electrical power is normally supplied by EWEB via two independent feeds. The power is delivered to the UO substation and splits into EWEB 1 and EWEB 2 and both lines are directed to the switchhouse for distribution to campus feeders. When operating, the Cogeneration System produces electricity in the Combustion Turbine and Steam turbine generators (CTG and STG) and have a total combined capacity of 10,000 kW The CTG can be operated independently of the cogeneration system with a capacity of 8,000 kW. The cogeneration system or CTG can provide power to campus upon a loss of EWEB power. The CTG alone cannot meet the campus demand for normal business operations during peak periods and adjustments must be made to keep the campus load within limits of the CTG. Three emergency diesel generators provide power upon a loss of power from either EWEB or the cogeneration system. Each emergency generator is rated at 2,200 kW and can be operated in conjunction (or parallel) with the CTG if needed to augment the CTG to meet campus power demand. On a loss of power, the emergency generators automatically start and automatically place power on Standby Feeders 1 and 2. Feeders 1,2,3,4, 9, 10, and 11 supply normal power to campus buildings. Standby Feeders supply life safety, fire protection to buildings and some select buildings receive power for additional functions for business continuity reasons. S1 S2 Feeder Breakers SWITCH HOUSE Emergency Diesel Generators

Combustion Turbine Generator Emergency Diesel Generators EWEB Power Supply CPS EWEB UO Substation Feeders 1 2 Combustion Turbine Generator 3 4 13MW 9 10 11 Campus electrical power is normally supplied by EWEB via two independent feeds. The power is delivered to the UO substation and splits into EWEB 1 and EWEB 2 and both lines are directed to the switchhouse for distribution to campus feeders. When operating, the Cogeneration System produces electricity in the Combustion Turbine and Steam turbine generators (CTG and STG) and have a total combined capacity of 10,000 kW The CTG can be operated independently of the cogeneration system with a capacity of 8,000 kW. The cogeneration system or CTG can provide power to campus upon a loss of EWEB power. The CTG alone cannot meet the campus demand for normal business operations during peak periods and adjustments must be made to keep the campus load within limits of the CTG. Three emergency diesel generators provide power upon a loss of power from either EWEB or the cogeneration system. Each emergency generator is rated at 2,200 kW and can be operated in conjunction (or parallel) with the CTG if needed to augment the CTG to meet campus power demand. On a loss of power, the emergency generators automatically start and automatically place power on Standby Feeders 1 and 2. Feeders 1,2,3,4, 9, 10, and 11 supply normal power to campus buildings. Standby Feeders supply life safety, fire protection to buildings and some select buildings receive power for additional functions for business continuity reasons. S1 S2 Feeder Breakers SWITCH HOUSE Emergency Diesel Generators

Emergency Diesel Generators Emergency Diesel Generator Operation CPS Feeders 1 2 3 50%-65% 4 6.5MW 9 10 11 Campus electrical power is normally supplied by EWEB via two independent feeds. The power is delivered to the UO substation and splits into EWEB 1 and EWEB 2 and both lines are directed to the switchhouse for distribution to campus feeders. When operating, the Cogeneration System produces electricity in the Combustion Turbine and Steam turbine generators (CTG and STG) and have a total combined capacity of 10,000 kW The CTG can be operated independently of the cogeneration system with a capacity of 8,000 kW. The cogeneration system or CTG can provide power to campus upon a loss of EWEB power. The CTG alone cannot meet the campus demand for normal business operations during peak periods and adjustments must be made to keep the campus load within limits of the CTG. Three emergency diesel generators provide power upon a loss of power from either EWEB or the cogeneration system. Each emergency generator is rated at 2,200 kW and can be operated in conjunction (or parallel) with the CTG if needed to augment the CTG to meet campus power demand. On a loss of power, the emergency generators automatically start and automatically place power on Standby Feeders 1 and 2. Feeders 1,2,3,4, 9, 10, and 11 supply normal power to campus buildings. Standby Feeders supply life safety, fire protection to buildings and some select buildings receive power for additional functions for business continuity reasons. S1 S2 Feeder Breakers SWITCH HOUSE Emergency Diesel Generators

Combustion Turbine Generator Emergency Diesel Generators Island Mode Operations CPS Feeders 1 2 Combustion Turbine Generator 3 100% 4 13.5MW 9 10 11 Campus electrical power is normally supplied by EWEB via two independent feeds. The power is delivered to the UO substation and splits into EWEB 1 and EWEB 2 and both lines are directed to the switchhouse for distribution to campus feeders. When operating, the Cogeneration System produces electricity in the Combustion Turbine and Steam turbine generators (CTG and STG) and have a total combined capacity of 10,000 kW The CTG can be operated independently of the cogeneration system with a capacity of 8,000 kW. The cogeneration system or CTG can provide power to campus upon a loss of EWEB power. The CTG alone cannot meet the campus demand for normal business operations during peak periods and adjustments must be made to keep the campus load within limits of the CTG. Three emergency diesel generators provide power upon a loss of power from either EWEB or the cogeneration system. Each emergency generator is rated at 2,200 kW and can be operated in conjunction (or parallel) with the CTG if needed to augment the CTG to meet campus power demand. On a loss of power, the emergency generators automatically start and automatically place power on Standby Feeders 1 and 2. Feeders 1,2,3,4, 9, 10, and 11 supply normal power to campus buildings. Standby Feeders supply life safety, fire protection to buildings and some select buildings receive power for additional functions for business continuity reasons. S1 S2 Feeder Breakers SWITCH HOUSE Emergency Diesel Generators

Individual Building Breakers are manually operated locally at building FEEDER SYSTEM BASICS Radial Feed System Individual Building Breakers are manually operated locally at building One single main feeder breaker at switch house When a feeder is energized, all loads are energized until building breakers are operated Switch House Breaker Clinical Services Condon Education Hedco N/E The Feeder system basically work like a power cord that is used at home- with much higher energies. Individual feeders connect the switchhouse to individual buildings. There is a large breaker that can energize/de-energize a feeder from the swtichhouse. When a feeder is energized, all loads will receive power. Individual breakers to turn off buildings can be operated manually if power is not desired at an individual building. This is required to be done at the building and cannot be done from the CPS switchhouse. De-energizing a less essential building may be necessary to lower the total load on a feeder to within the limits of the capacity of the system and allow essential loads to be energized. McKenzie PLC

Feeders 1,2,3,4,9,10,11 Standby Feeders Feeder Breaker Feeder Breaker Transformer Transformer Feeder Breaker

StandbyFeeder Breaker Fire Protection Life Safety Circuits Designated Critical Circuits Does NOT substitute for Feeders 1-11 * *University Health, Zebrafish and Various CPFM Buildings 100% on Standby Feeders 100% Building Power Feeders 1,2,3,4,9,10,11 Standby Feeders Normal Feeder Breaker Transformer Transformer StandbyFeeder Breaker

Natural Gas Not Available Electrical Power ELECTRICAL OPERATIONAL PHASES Max Fuel Endurance 0MW Life Support Phase 1 Standby & Life Safety Phase 2 Partial Operations Phase 3 Island Full Power Phase 4 EWEB Full Power Phase 5 42 days Intermittent Use of Diesel Generators Requires Prioritization of Standby Loads and Life Safety 1MW 21 days 1 Diesel Generator All Life Safety and All Standby Power Natural Gas Not Available 2MW 7 days 2-3 Diesel Generators Prioritize Non-Essential Loads and Services 6MW 2.6 days No Natural Gas CPS Provides Electrical Power for Normal Business Operations. Fuel Sources Review Power production capabilities Operational Phases will be based on equipment configuration which is driven by the availability of natural gas and the situation/cause of loss of electrical power. Natural Gas Available 15MW EWEB Provides Electrical Power for Normal Business Operations 15MW

Combustion Turbine Generator Emergency Diesel Generators BASIC ELECTRICAL DISTRIBUTION SYSTEM CPS EWEB UO Substation 1 2 Combustion Turbine Generator 3 4 9 10 11 Campus electrical power is normally supplied by EWEB via two independent feeds. The power is delivered to the UO substation and splits into EWEB 1 and EWEB 2 and both lines are directed to the switchhouse for distribution to campus feeders. When operating, the Cogeneration System produces electricity in the Combustion Turbine and Steam turbine generators (CTG and STG) and have a total combined capacity of 10,000 kW The CTG can be operated independently of the cogeneration system with a capacity of 8,000 kW. The cogeneration system or CTG can provide power to campus upon a loss of EWEB power. The CTG alone cannot meet the campus demand for normal business operations during peak periods and adjustments must be made to keep the campus load within limits of the CTG. Three emergency diesel generators provide power upon a loss of power from either EWEB or the cogeneration system. Each emergency generator is rated at 2,200 kW and can be operated in conjunction (or parallel) with the CTG if needed to augment the CTG to meet campus power demand. On a loss of power, the emergency generators automatically start and automatically place power on Standby Feeders 1 and 2. Feeders 1,2,3,4, 9, 10, and 11 supply normal power to campus buildings. Standby Feeders supply life safety, fire protection to buildings and some select buildings receive power for additional functions for business continuity reasons. S1 S2 SWITCH HOUSE Emergency Diesel Generators