The specific heat represents the amount of energy required to raise 1 kg of substance by 1oC (or 1 K), and can be thought of as the ability to absorb heat. However, if the equation contains temperature (but not Delta temperature) in the denominator of the equation, then the two units give different. Units for energy, energy flow, heat flow. The SI units of specific heat capacity are J/kgK (joules/kilogram × Kelvin). Namibia's Minister of Mines and Energy, Mr.