This plant is not going away anytime soon -- its location is Strategic-- the Combined Cycle Natural gas units that were installed in 2003 [Units 8 & 9 with the short fat stacks] have at least a 30 year life cycle
from the Excelon website
www.exeloncorp.com
Units 8 and 9 are highly efficient and give Boston a huge advantage in the advent of a serious grid collapse -- more power can be generated inside Boston's core than is needed to meet the city's baseload -- this is not typical for major cities these days
Here's where the electricity needed for your morning coffee and muffin, etc comes from @ 7:17 AM today -- total demand 103021 MW [ISO NewEngland]*1
*2
10/06/2019 07:17 | NaturalGas | 4443 |
10/06/2019 07:17 | Nuclear | 3315 |
10/06/2019 07:17 | Hydro | 374 |
10/06/2019 07:17 | Renewables | 1130 |
10/06/2019 07:17 | Wood | 196 |
10/06/2019 07:17 | Refuse | 368 |
10/06/2019 07:17 | Wind | 535 |
10/06/2019 07:17 | LandfillGas | 27 |
10/06/2019 07:17 | Solar | 4 |
10/06/2019 07:17 | Other | 2 |
Note Renewables 1130 == Sum of:
Wood 242
Refuse 365
Wind 206
LandfillGas 27
Other 2
Note there was 0 MW coming from solar at 07:17 since sunrise was less than an hour earlier -- by 08:00 solar had risen to 27 MW under clear skies
*1 for reference purposes Winter Peak demand was approx 18,000 MW [January - Feb], Summer Peak demand was approx 22,000 MW [July-Aug] 2019
*2 -- a very interesting site -- not only can you see what is happening now -- but you can tool back in time to try to guess the peak, etc.