Well it depends on what type of matter your talking about here. For an example coal can be considered a matter, and from coal we get energy like burning it for electricity.
organic matter in it
The primary energy source of mushrooms is organic matter, such as decaying plant material or wood. Mushrooms are decomposers, breaking down this organic matter to obtain energy for growth and reproduction.
Biomass
the sun
Idle
gasoline is matter, it is burned to create energy
The fundamental source of energy according to the principles of physics is the conversion of matter into energy, as described by Einstein's famous equation Emc2. This equation states that energy can be released when matter is converted into energy, and this process is the basis for nuclear reactions and other energy sources.
The sun. It's just a matter of how to most efficiently harness this energy.
Currently, dark matter cannot be harnessed as an energy source because it does not interact with light or other forms of electromagnetic radiation. Scientists are still studying dark matter to understand its properties and potential uses in the future.
Cracked corn is indeed an energy feed source for livestock. Corn is a high-energy feedstuff no matter how it's processed, and should be treated as such.
The term for organic matter that contains stored energy is biomass. Biomass can be used as a source of renewable energy through processes such as combustion or fermentation.
It means that the energy demand stays the same no matter what energy source it is coming from!