Renewable energy is cheaper when it's used as it's made. It is much more expensive when you need to build storage, both the storage cost as well as the loss of power in the storage process (as much as 60% loss). Natural Gas pipelines would provide a cheap stable source of energy when the wind isn't blowing and the sun isn't shining. Nuclear would be a good alternative, I'd love to see it, but I don't think it's making a comeback in MA.