ISO-NE publishes amounts, sources of electric energy used to meet demand in 2023

ISO New England has published a breakdown of the amount of electricity produced by generators in New England and imported from other regions to satisfy all residential, commercial, and industrial customer demand from the power grid in 2023.

Total production for the year, known as net energy for load (NEL), amounted to 114,727 gigawatt-hours.

This number was calculated by adding total electricity generation and price-responsive demand reduction within New England to net imports from and exports to neighboring regions. The energy used to operate pumped storage power plants is then subtracted from that sum. Numbers are preliminary, pending the resettlement process.

Output from solar installations increased by 6% from 2022, rising to 3,851 GWh or 3% of the NEL. Wind power was relatively steady from year to year at 3% of NEL.

Oil-fired resources produced less electricity in 2023 than in 2022, accounting for 322 GWh, or 0.32% of the NEL, compared to the previous year’s 1,844 GWh. Production from coal-fired resources decreased from 320 GWh to 182 GWh, accounting for .16% of NEL for 2023.

The chart below contains a brief breakdown of the resources used to meet NEL in 2023. More detailed information is available on the Resource Mix webpage.

Energy source	Energy produced (in gigawatt-hours)	Percentage of NEL
Natural gas	55,586	49%
Nuclear	23,204	20%
Net imports	15,104	13%
Hydro	9,645	8%
Solar	3,851	3%
Wind	3,302	3%
Refuse	2,681	2%
Wood	1,787	2%
Landfill gas	454	0.4%
Oil	322	0.28%
Other	237	0.21%
Coal	182	0.16%
Methane	41	0.04%
Price-responsive demand	11	0.01%

Note: Percentages shown may not sum correctly due to rounding. Historical data on consumer demand for electricity, and how that demand was met, is available in spreadsheet form on the Net Energy and Peak Load webpage.