The NYISO market consists of day-ahead and real-time markets. The day-ahead market is a forward market in which hourly LMPs (Locational Marginal Pricing) are calculated for the next operating day based on generation offers, demand bids and scheduled bilateral transactions. This is often noted as DA LMP. The real-time market is a spot market in which current LMPs are calculated at five-minute intervals based on actual grid operating conditions. This is often noted as RT LMP.
The map below shows the current real time zonal prices for the NYISO regions.
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How can I access current index prices?
NYISO privides index prices on its website.
How is the zonal price determined?
Each zone has an associated zonal price that is calculated as a weighted average price based on generator LBMPs and generator bus load distribution factors.
What is the difference between the real-time and the day-ahead markets?
Suppliers can purchase power from the day-ahead market to meet the following day's forecasted usage. NYISO's day-ahead market closes at 5:00 am for the following day. The real-time market is a balancing market where generators bid on excess demand intraday. An energy consumer on the real-time index will pay a different rate each interval based on the winning bid. The real-time market closes 75 minutes before the start of the interval being scheduled. GDF SUEZ Energy Resources offers index products based on both the real-time and the day-ahead markets.
Should I choose an index based energy contract?
Contact your account manager at GDF SUEZ Energy Resources to discuss the pros and cons of index-based pricing. Each customer has different needs and levels of risk tolerance. A well-informed account manager can help you to determine the product option that is best for you.