Theoretically, the 1917 revolution had been a revolution from below
Bukharin and the right used this notion to argue that since the USSR was
now a proletarian society the economy should be left to develop by itself, however Stalin's economic reforms ended this thinking
Lenin had created a central planning agency known as Gosplan, however under Stalin state control would be total so the scale and thoroughness became much greater.
There was an important political aspect to this; he confirmed his authority over Party and government
Stalin compared the significance his economic changes to Lenin's sanction of the October revolution
This was obviously in order to enhance his status as a revolutionary leader