Quite simply, we can't allow any villain to walk into our store and demand we do something for them. However, Accord is a very influential person with lots of parahumans under his command, who could make Taylor's life a pain in the ass. Plus, he not so subtly threatened Taylor's identity/dad and (meta-knowledge) can really hold a grudge for even minor things. I vote we refuse his offer now, but offer to fulfill the installation of a private generator if asked by a wealthy individual in the future. (Really, his power might allow him to walk in without any surveillance, but Taylor has to assume that someone might have seen this and can't agree without potentially destroying her reputation.)