Generation interconnection cluster 4 phase 1 methodology (completed)

Outcome: The ISO implemented an alternative methodology to the phase 1 network upgrades analysis for interconnection queue Cluster 4 to assess interconnection customer cost responsibility ceiling and posting requirements for Cluster 4 generation. The new approach relies on existing methodology principles but includes revisions that produce more reasonable and useful results while still accommodating the needs of interconnecting parties. For more information see the Technical Bulletin. — Implementation: Oct. 20, 2011

The ISO is considering an alternative methodology to the phase 1 network upgrade analysis used to assess the cost ceiling and posting requirements for interconnection cluster 4 generation. The alternative methodology under consideration will not impose a limit on the amount of generation that actually proceeds through phase 2. The current methodology, if applied, would lead to unrealistic results because of the significant volume of interconnection requests received in the cluster 4 window, which closed on March 31, 2011. No change in methodology is expected for the phase 2 analysis and all generation that advances from cluster 3 and 4 phase 1 will be studied together in the cluster 3 and 4 phase 2 process.