Depending on country there are sometimes very strict requirements - or just traditions sometimes - around building up strong survivability in face of total loss of grid power. Including diesel and turbine generators on bigger BTSes let alone exchanges. If you drop capacity per terminal (so bandwidth) you can cover a lot more range at times which helps with mobile network resiliency.
> Including diesel and turbine generators on bigger BTSes let alone exchanges.
Or if you’re AT&T, grid natural gas backup, so your CO goes down if electrical and natural gas both go out once the batteries die. Did I mention how they didn’t build in roll-up generator connection points and had to emergency install those?
