Abstract: By burning samples in a GR--3500 Oxygen Bomb Calorimeter, the caloric values of plant samples were tested and then calculated the total amounts of energy of Casuarina equi setifolia plantation, Pinus elliottii plantation and Acasia crassicarpa plantation at Chishan forestry centre in Dong shan county Fujian province. The results were showed as follows: The standing biomass and energy were 156.82 t/hm2 and 3 177.95 GJ/hm2 in C. equiseti folia plantation, and the gross caloric values were between 19.84 kJ/g and 21.70 kJ/g, with total average 20.26 kJ/g (The ratio of total energy to total biomass). The energy distribution a mong components were: trunk occupied 38.09% of total, the largest ratio of components, while fruit onthe other hand, was 0.77%; While in the A. crassicarpa plant, the standing bi omass and energy were 149.51t/hm2 and 3 079.16 GJ/hm2, respectively. The caloric were from 19.98 kJ, /g to 23.48 kJ/g with total average 20.59 kJ/g. The components energy structure were as follows: Truck occupied 57.67% of total, while dead branch only 3.06% in the other side. In the P. elliottii plantation, standing biomass was 142.22 t/hm2. Caloricvalue of components range from 20.53 kJ/g to 21.54 kJ/g, with total average 21.00 kJ/g. While standing energy was 2 986.28 GJ/hm2. From all the above, three species of plantation with higher standing biomass, standing energy, high caloric values of components and total average values, showed that they had higher ratio of solar energy utilization. So C. equisetifolia, A. crassicarpa and P. e/liottii were very suitable species to coastal sandy cultivation.