Common use of Under-Frequency and Over Frequency Conditions Clause in Contracts

Under-Frequency and Over Frequency Conditions. For the requirements under Article 9.7.3, the Interconnection Customer shall design and operate the Large Generating Facility in accordance with this LGIA and the ANPP Hassayampa Switchyard Interconnection Agreement, and in the event of a conflict shall follow the higher standard set by either agreement. In the event of a conflict, the Parties and SRP shall use Good Utility Practice and Reasonable Efforts to reach a mutual understanding to resolve the issue. The CAISO Controlled Grid is designed to automatically activate a load- shed program as required by Applicable Reliability Standards and the Applicable Reliability Council in the event of an under-frequency system disturbance. The Interconnection Customer shall implement under- frequency and over-frequency protection set points for the Large Generating Facility as required by Applicable Reliability Standards and the Applicable Reliability Council to ensure “ride through” capability. Large Generating Facility response to frequency deviations of pre-determined magnitudes, both under-frequency and over-frequency deviations, shall be studied and coordinated with the Participating TO and CAISO in accordance with Good Utility Practice. The term "ride through" as used herein shall mean the ability of a Generating Facility to stay connected to and synchronized with the CAISO Controlled Grid during system disturbances within a range of under-frequency and over-frequency conditions, in accordance with Good Utility Practice. Asynchronous Generating Facilities shall be subject to frequency ride through capability requirements in accordance with Appendix H to this LGIA.

Under-Frequency and Over Frequency Conditions. For the requirements under Article 9.7.3, the Interconnection Customer shall design and operate the Large Generating Facility in accordance with this LGIA and the ANPP Hassayampa Switchyard Interconnection Agreement, and in the event of a conflict shall follow the higher standard set by either agreement. In the event of a conflict, the Parties and SRP shall use Good Utility Practice and Reasonable Efforts to reach a mutual understanding to resolve the issue. The CAISO Controlled Grid is designed to automatically activate a load- load-shed program as required by Applicable Reliability Standards and the Applicable Reliability Council in the event of an under-frequency system disturbance. The Interconnection Customer shall implement under- under-frequency and over-frequency protection set points for the Large Generating Facility as required by Applicable Reliability Standards and the Applicable Reliability Council to ensure “ride through” capability. Large Generating Facility response to frequency deviations of pre-determined magnitudes, both under-frequency and over-frequency deviations, shall be studied and coordinated with the Participating TO and CAISO in accordance with Good Utility Practice. The term "ride through" as used herein shall mean the ability of a Generating Facility to stay connected to and synchronized with the CAISO Controlled Grid during system disturbances within a range of under-frequency and over-over- frequency conditions, in accordance with Good Utility Practice. Asynchronous Generating Facilities shall be subject to the over-frequency ride through capability requirements set forth in accordance with Appendix H to this LGIA. * * * Appendix H To LGIA INTERCONNECTION REQUIREMENTS FOR AN ASYNCHRONOUS GENERATING FACILITY Appendix H sets forth the requirements and provisions specific to all Asynchronous Generating Facilities that have not executed an LGIA or been tendered an LGIA by the CAISO as of June 10, 2010. All other requirements of this LGIA continue to apply to Asynchronous Generating Facility interconnections.

Under-Frequency and Over Frequency Conditions. For the requirements under Article 9.7.3, the Interconnection Customer shall design and operate the Large Generating Facility in accordance with this LGIA and the ANPP Hassayampa Switchyard Interconnection Agreement, and in the event of a conflict shall follow the higher standard set by either agreement. In the event of a conflict, the Parties and SRP shall use Good Utility Practice and Reasonable Efforts to reach a mutual understanding to resolve the issue. The CAISO Controlled Grid is designed to automatically activate a load- load-shed program as required by Applicable Reliability Standards and the Applicable Reliability Council in the event of an under-frequency system disturbance. The Interconnection Customer shall implement under- under-frequency and over-frequency protection set points for the Large Generating Facility as required by Applicable Reliability Standards and the Applicable Reliability Council to ensure “ride through” capability. Large Generating Facility response to frequency deviations of pre-determined magnitudes, both under-frequency and over-frequency deviations, shall be studied and coordinated with the Participating TO and CAISO in accordance with Good Utility Practice. The term "ride through" as used herein shall mean the ability of a Generating Facility to stay connected to and synchronized with the CAISO Controlled Grid during system disturbances within a range of under-frequency and over-frequency conditions, in accordance with Good Utility Practice. Asynchronous Generating Facilities shall be subject to the over-frequency ride through capability requirements set forth in accordance with Appendix H to this LGIA. * * * Appendix H To LGIA INTERCONNECTION REQUIREMENTS FOR AN ASYNCHRONOUS WIND GENERATING PLANTFACILITY Appendix H sets forth the requirements and provisions specific to a wind generating plant. Aall Asynchronous Generating Facilities that have not executed an LGIA or been tendered an LGIA by the CAISO as of June 10, 2010. All other requirements of this LGIA continue to apply to wind Asynchronous gGenerating plant Facility interconnections.