The definition of urban is relating to a city or of a city with a population of at least 50,000 people. An example of urban is the nature of Manhattan. urban. of or characteristic of the styles and culture of the inner city, esp. of the black inner city: urban music, fashions, etc. urban.
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.enewable energy resources exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.
However, an equally-accurate statement is: ârenewables are too. expensive, when compared to hydrocarbons, to implement on a. broad basis.â Hydrocarbons are non-renewable, but they are the. most economic form of energy we have access to at this time. Renewables are often considered sustainable sources of energy due. to the fact that their energy comes from infinitely renewable wind, sun, waves or crops. Ironically, many of these renewables are only. sustainable if continually subsidized by governments; governments that are often not in the financial position.