New York State Energy Planning Board Final Draft New York State - PowerPoint PPT Presentation

New York State Energy Planning Board Final Draft New York State Transmission and Distribution System Reliability Study and Report Erin Hogan, NYSERDA August 30, 2012

T&D Reliability Study Highlights  Introduction and Overview  Transmission System Reliability  Distribution Reliability  Investment and Expenditures  Environmental Regulations  T&D Reliability Impacts from Policy  Future T&D Reliability Issues  Key Findings and Recommendations 2 2

Overview of The Electric System

New York State High Voltage Transmission HVDC 4 4 Source: NYISO, 2012

Transmission System Reliability 5

Reliability Oversight FERC NERC NPCC NYSRC PSC Generators Transmission NYISO Other Suppliers Owners 6 6

Distribution System Reliability

Distribution Reliability Metrics Customer Average Interruption Duration Index (CAIDI) Number of Customer Hours/ Number of Customers Affected System Average Interruption Frequency Index (SAIFI) Number of Customer Affected/Number of Customers Served 8 8

Distribution Performance CAIDI for Radial and Network SAIFI for Radial and Network 12.00 1.80 1.60 10.00 1.40 8.00 1.20 1.00 6.00 0.80 4.00 0.60 0.40 2.00 0.20 0.00 0.00 2007 2008 2009 2010 2011 2007 2008 2009 2010 2011 Radial With Storms Radial W/O Storms Network Radial With Storms Radial W/O Storms Network 9 9

Investment and Expenditures

Utility Capital Expenditure ($000s) 3,000,000 2,500,000 2,000,000 Nominal $ x 1,000 1,500,000 1,000,000 500,000 0 Actual Planned 11 11 Source: DPS

Electric O&M Expenses ($000s) 1,200,000 1,000,000 800,000 Nominal $ x 1,000 600,000 400,000 200,000 0 Transmission Distribution 12 12 Source: DPS

Environmental Regulations

Environmental Regulations  Existing Rules – NOx RACT Rule – Best Available Retrofit Technology (BART) Rule – Utility MACT Rule – Best Technology Available (BTA) Policy  New and Future Rules – Cooling Water Intake Structures – Coal Combustion Residuals – CO 2 Emission Allowance 14

Impacts to Reliability

Reliability Impacts From Policies  Load – Energy Efficiency – Large Load Growth – Other Load Varying Mechanisms  Generation – Renewable Portfolio Standard – Distributed Generation  Transmission & Distribution – Bulk Electric System Definition – Performance Rate Making, Multi-Year Rate Agreements, and other Departures from Traditional Regulatory Mechanisms  Regulatory – Corporate Reorganization of Electric Utilities 16

Possible Future Reliability Issues Generation Transmission Load External Forces • Retirements • Aging Infrastructure • Variations • Sources • Environmental Initiatives • 2,300 miles over the next • Smart Grid and Emerging • Security Threats 10 years are nearing Technologies • Nuclear Relicensing • Geomagnetic design life • Electric Vehicles Disturbances • Market Conditions • 1,200 additional miles in • Aging Workforce next 10 to 20 years • Results • Results • Transition for both • Issues • Fuel Mix Issues/Supply • Results technology and process Diversity • Risks known and • Increases maintenance poses challenges estimated • Increases natural and downtime • Implemented correctly, gas/electric • Mitigation measures • Increases risk from new technologies could interdependence and developed unavailability optimize asset use and need for coordination • Effectiveness unknown operational efficiency 17 17

Key Findings and Recommendations  As assessed using existing metrics, the electric system meets reliability standards  Allow system planners and operators flexibility in their response to implement state policies  Support cost-effective replacement of aging infrastructure  Support diverse mix of electric generation fuel sources  Monitor gas/electric interdependence  Encourage workforce development  Support distributed generation technologies  Improve storm mitigation, restoration, and communication 18

Questions?