GHG, Renewables, and Reliability
GHG, Renewables, and ReliabilityIEP ANNUAL MEETINGSEPTEMBER 29,
2015
Carrie BentleyResero [email protected] not about
reliability- its about reliability through marketsThe ISO can
maintain grid reliability through manual dispatch and
procurementEnergy: exceptional dispatch, pro-rata
curtailmentsCapacity: risk-of-retirement backstop mechanismsManual
intervention is only a short-term solutionIn the long-term the ISO
must adapt the market to transparently and competitively price all
resource capabilities needed for grid reliability
State policy green goals affect the energy and resource adequacy
marketsEnergy market:Directly increase the variable costs of
thermal generationIndirectly lower the variable costs of renewable
resources Resource Adequacy:Lower demand for thermal
generationIncrease in demand for renewable resources
Energy and reserves are not the only products needed to maintain
grid reliabilityThe grid can no longer take for granted that the
bulk of the fleet will provide sufficient:Ramping capabilities
upward and downwardFrequency responseVoltage supportShort start-up
and shut-down capabilitiesThese needed grid attributes are not
currently priced in the energy market
Markets and planning must change to account for state policy
green goalsISO has many initiatives/processes that are in response
to grid reliability challenges:Frequency response, Reactive power,
FRAC MOO II, Flexible Ramping Product, EIM and Pac integration
initiatives, LTPP, Interconnection enhancementsIf you are only
going to follow two ISO initiatives; FRAC MOO flexible resource
adequacy capacity requirementFlexible Ramping Product energy market
enhancement to compensate for flexible ramping
What does the grid look like in 10 - 15 years?There is a need to
question big assumptions and let the little assumptions goAre all
new wind and solar resources built between now and 2030 going to
self-schedule? Is economic curtailment of renewables a bad
thing?How much can the grid rely on imports and exports for
balancing and flexible ramping, i.e. what are the physical
constraints?How much should the grid rely on imports and exports
for balancing and flexible ramping?
