Shop › Energy Sufficient T-Shirt Special Edition Image 1 of 1 Energy Sufficient T-Shirt Special Edition $30.00 The term “Energy Sufficient” means to return energy the same way you receive it whether its positive or negative. Size: Small Medium Large XLarge XXLarge XXXLarge Quantity: Add To Cart Added! The term “Energy Sufficient” means to return energy the same way you receive it whether its positive or negative.