Case study: Cordless drill: Rejuvenating a product

He had asked her to leave the porch light on, but she hadn't. Now he would have to return tomorrow to do the job. The contractor, who was to install storm windows on the woman's house while she was away, had nowhere to plug in his electric drill; he had planned to insert a plug receptacle into the porch light fixture, but with the power switch inside the house turned off, this would be futile.