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September 29, 2014 | Concord, NH. Eric Johnson. Director, External Affairs. New Hampshire Energy Summit. Lessons Learned from Winter 2014 and How the ISO Is Preparing for Winter 2015. Dramatic Changes in the Energy Mix.

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September 29, 2014 | Concord, NH

Eric Johnson

Director, External Affairs

New Hampshire Energy Summit

Lessons Learned from Winter 2014 and How the ISO Is Preparing for Winter 2015

dramatic changes in the energy mix
Dramatic Changes in the Energy Mix

Percent of Total Electric Energy Production by Fuel Type (2000 vs. 2013)

Source: ISO New England Net Energy and Peak Load by Source

region has not developed gas infrastructure to keep pace with growth of gas fired generation
Region Has Not Developed Gas Infrastructure to Keep Pace With Growth of Gas-fired Generation

Cumulative New Generating Capacity in New England

region is losing non gas resources
Region Is Losing Non-Gas Resources

Major Retirement Requests:

  • Salem Harbor Station (749 MW)
    • 4 units (coal & oil)
  • Vermont Yankee Station (604 MW)
    • 1 unit (nuclear)
  • Norwalk Harbor Station (342 MW)
    • 3 units (oil)
  • Brayton Point Station (1,535 MW)
    • 4 units (coal & oil)
  • Additional retirements are looming
Lessons and Observations from Winter OperationsOperational options are very limited and becoming more constrained
  • Gas pipelines are severely constrained when weather is cold, limiting gas generation to minimal levels
  • Oil-supply chain is fragile and unable to respond quickly during adverse weather conditions and/or when demand is high
  • Imported Canadian hydropower is limited during very cold weather (because Québec is a winter-peaking system)
  • The region is very vulnerable to the loss of large non-gas generators during cold weather (e.g., nuclear units)
current pipeline infrastructure is inadequate to serve region s natural gas fired generation
Current Pipeline Infrastructure is Inadequate to Serve Region’s Natural Gas-fired Generation

Of the more than 11,000 MW of gas-fired generation with a capacity supply obligation, only about 3,000 MW were generating during the peak hour.


Pipeline Constraints Last Winter Resulted in a Shift to Coal and Oil Resources and Higher EmissionsSO2, NOX, CO2 from Power Generation, Winter 2013 - 2014

Source: US EPA Continuous Emissions Monitoring System

preparations for this winter and beyond
Preparations for This Winter, and Beyond
  • Winter reliability program will improve fuel security
  • Better alignment between gas and electricity markets will improve performance of gas-fired generators
  • Recent market rule changes will drive resources to make secure fuel arrangements over the long term
challenges ahead
Challenges Ahead

We are in a precarious operating position for several winters due to inadequate gas pipeline infrastructure and retirements that have already taken place

Further non-gas generator retirements and/or outages will exacerbate reliability concerns

Changes to ISO’s electricity markets will strengthen resource performance and seek the most economic market solutions, but these changes alone won’t spur long-term investment in natural gas infrastructure

The region needs to find a way forward to secure the natural gas infrastructure it needs to ensure a reliable electric system