Eversource is running a program called demand response where you allow them to draw from your battery during high demand days in the summer. They pay you for each event up to $1375 a year. New England currently relies on mostly oil fired peaker power plants that sit idle for like 95% of the year. Just like what happened in Texas when they are needed they can charge outrageously high rates.
Here is the program if anyone's interested.
https://www.eversource.com/content/ema-c/residential/save-money-energy/manage-energy-costs-usage/demand-response/battery-storage-demand-response