Backup generators can provide savings on electricity bills by "peack shaving" the KW demand charge. Changing traditional transfer switches to switchgear with with generator synchronizing controls, the same generator can provide both peak shaving in addition to emergency backup power.
The generator will synchronize and operate in parallel with the electrical utility supply or operate islanded from the utility for emergency power. Lowering the "peak" electrical use in the winter with minimal generator operation can reduce the electricity "demand" charge that is applied to your bill all year.
The generator will connect and disconnect without any disruption to the electrical supply voltage. Generators and synchronizing switchgear can also be made portable to be relocated to other locations.NB Power Peak Saver Program Guide 2018-19.pdf