What was not a power source for American industry

Without choices, that's hard to answer. In the early days of industrialization, factories were built by rivers for water wheel power to generate energy. Steam engines were also used in early days in mining and other industrial applications. Then came coal, and then oil and natural gas. Many of these methods were used to generate electricity for use in industry. Now we even have much use of solar panels to produce electricity too, as well as wind-generated power. (Today's wind turbines are a tremendous advancement over old-style windmills.)

Perhaps one power source that hasn't been directly used in industry would be nuclear power, but we do have nuclear power plants generating electricity that is then used in industrial applications.

Bottom line is that we'll use whatever means are most efficient (and cost efficient) to generate the power needed to operate industries.