A sustainable resource means it will last for ever, or for as long as humans renew the source.
It can last a long, long time, so that would satisfy the definition of "renewable energy".
The more renewable energy we use the less non-renewable energy we use. And if we use less of it, it'll last longer.
The remaining life of non-renewable energy resources are constantly being revised due to new innovations in extraction and processing methods, and because of developments in renewable energy resources.
That follows directly from the definition of "renewable energy". A renewable energy is simply one that can be sustained in the long term.
Renewable energy resources like sun, wind, hydro, tidal etc will last as long as the sun is still going.Non-renewable resources like fossil fuels (coal, oil and natural gas) are limited, and will eventually run out if we keep on burning them.
Geothermal power relies on the Earth's natural heat, which is estimated to last as long as the planet exists. This makes it a renewable and sustainable source of energy.
Geothermal energy is considered a renewable resource because it derives from the Earth's heat, which is continuously replenished by natural processes. Therefore, geothermal energy will last as long as the Earth remains geologically active, which is estimated to be billions of years.
Basically atomic energy is a non renewable resource. The source of the energy is the supernova that exploded close to where earth was formed and the atomic energy has been running down ever since. However if man could harness nuclear fusion (which he has not done in the field of energy generation to date) then this too would be a non renewable resource but it would last man for as long as it mattered.
Solar energy is a renewable energy since you can always get energy from the sun and it will never run out, hence the word renewable. Although the sun will explode in around 4 or 5 billion years, solar energy is virtually renewable and will be available for a long, long time.
Chemical energy is both renewable and non-renewable in different situations. When burning fossile fuel, it is non-renewable. But it is renewable with flowers as long as their source remains available. So if the chemical the energy is being produced from is renewable, then the chemical energy will be too.
The sun is a renewable source of energy. Water is not a renewable source of energy. It is a renewable resource as long as the rain keeps on falling on the same place.
Biomass energy will last as long as organic materials like wood, crops, and waste products continue to be produced. As long as we manage these resources sustainably, biomass energy can be a long-term renewable energy source.