CAISO is developing a plan for an Aug. 21 solar eclipse that will sharply reduce the state's solar power for three hours on a Monday morning in summer.

The Energy Imbalance Market (EIM) experienced a “dramatic uptick” in failed ramping capacity tests in November and December, the CAISO IMM reported.

Solar photovoltaic resources can provide ancillary services in a way comparable to conventional generating resources, according to a study released by CAISO.

CAISO is seeking stakeholder input on how to respond to a solar eclipse that will significantly curtail output from California’s growing solar generation portfolio next August.

FERC approved the CAISO plan to for a new market mechanism for itself and the Western EIM designed to integration of variable renewable energy resources.

MISO will ask FERC for an April 1 effective date on its new ramp capability software, RTO officials said.

SPP officials and market participants last week celebrated the first year of its Integrated Marketplace, boasting of its on-time, under-budget delivery.