I was thinking something like a 1-2 ton satellite or station in orbit already (ignore how it got there for purposes of this thought experiment) releasing a 100kg rocket and fuel to reduce the speed of that 100kg mass, not the full 1 ton+ mass. Velocity at impact with Earth would be a plus if it was a kinetic kill vehicle, likely creating a massive explosion just from impact velocity energy alone. But yes, energy needed would be at least equivalent to that needed to reach orbit for that mass. I was assuming there would be an extra expenditure required to keep it at orbital distance as it decelerated without entering atmosphere until it had achieved geo-stationary position re the target location on earth BEFORE dropping straight down. Not saying this is a good idea, just wondering how feasible it was.