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Spring 2017 markets report reviews wholesale market outcomes during March, April, and May 2017 

The Spring 2017 Quarterly Markets Report prepared by the Internal Market Monitor (IMM) of ISO New England reviews wholesale energy market outcomes for the three-month period from March 1 through May 31, 2017.

The report notes that the total wholesale cost of electricity (including energy, capacity, and ancillary services) during the three-month period was $1.3 billion, up 26% compared to the market value of $1.0 billion during the spring of 2016. The average day-ahead wholesale energy price was $30.78 per megawatt-hour (MWh), up 32% over the average day-ahead price during spring 2016, while the real-time price was $31.92/MWh, 44% higher than the average real-time price during the previous spring. The year-over-year increase was driven by natural gas prices that were 54% higher, averaging $3.59 per million British thermal units (MMBtu) compared to the $2.33/MMBtu average price during the previous spring. Unseasonably cold temperatures during March 2017 compared with March 2016 drove most of the year-over-year increase in quarterly average prices. In March 2017, natural gas averaged $4.46/MMBtu, a 127% increase over the historically low natural gas prices seen during the previous March.