What are some direct or indirect sources of renewable energy?

I am not sure what exactly do you mean by Indirect or direct sources. In reference to solar power (more in this article): What Is the Difference Between Direct and Indirect Solar Power? read more

To get direct solar power, the energy from the sun must undergo only one change to make it into a usable form. Direct solar power is any kind of energy that is obtained from the sun in this way. Direct solar power could come in various forms. read more

Direct Energy purchases power generated from a variety of sources including natural gas, coal, and nuclear. For our customers who choose a green plan or the"Make It Green" option, we purchase Renewable Energy Credits (RECs) to offset your usage with power generated from renewable sources such as wind, solar, geothermal, hydro, and biomass. read more