This study performed a basic test to evaluate the energy value of food waste and ground coffee residue, and measured the calorific value of mixtures of food waste and ground coffee in the mass ratios of 1 : 1, 1 : 2, and 2 : 1. According to the results of this study, food waste, ground coffee, and their mixtures are technically viable as energy resources because they all meet Korea’s quality criteria for Bio-SRF. The proximate analysis results for food waste and ground coffee mixture showed 51.6% moisture, 46.2% combustibles, and 2.2% ash content. The high calorific value and low calorific value measured by the SE-C5500 Bomb Calorimeter were 4,602 kcal/kg and 3,927 kcal/kg, respectively. Heavy metal analysis showed the absence of mercury (Hg) and arsenic (As). Therefore, food waste, ground coffee residue, and their mixture sample met Korea’s quality criteria for Bio-SRF, which are technically and economically viable for use as bio-solid fuel (Bio-SRF).