June 04, 2020 Tariff rules to be aligned with FERC directives, too ISO-NE asked FERC Monday to appr
Tariff rules to be aligned with FERC directives, too
ISO-NE asked FERC Monday to approve new rules to address an implementation issue on the treatment of energy efficiency resources during capacity scarcity conditions and to more fully align the tariff rules with the commission’s directives. The ISO had to add rules to its capacity performance proposal that efficiency resources would not be impacted when a scarcity event happened outside of the resource’s “measure hours.”
Later on, the ISO added another rule that if scarcity conditions did hit during the measure hours, the actual capacity provided would be equal to the reported monthly performance value. Otherwise, the actual capacity provided would be zero. Setting a resource’s actual capacity provided value to zero impacts another part of the pay-for-performance rules – the capacity balancing ratio is impacted and led to the need for the filing this week.
The balancing ratio is the system’s total load and reserve requirement at the time of the scarcity condition divided by the total capacity supply obligation MW of all suppliers. It is used…