Ontario Transmission Code requires a Metering Service Provider (MSP) to be hired by load or generator customers for metering services. MSPs are third parties certified for the design, installation, commissioning and operation of metering equipment in HV stations.
AS a first step, MSP prepares a metering single line diagram (SLD) and sends to IESO for approval. MSP also prepares a metering plan to be submitted to IESO for approval. However, MSP does not submit the metering plan directly to the IESO as it needs to come from the Metered Market Participant (MMP). The plan needs to be updated with all the information including the MECs.
Once the SLD is approved IESO will then request package 2 to be submitted which will include the EITRP (Emergency IT Restoration Plan) and the MEC documents. The secondary cable distances between IT's and the metering cabinet is required in order to complete the MEC calculations.
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