In the long pasture, not far from the farm buildings, there was a small knoll which was the highest point on the farm. After surveying the ground Snowball declared that this was just the place for a windmill, which could be made to operate a dynamo and supply the farm with electrical power. This would light the stalls and warm them in winter, and would also run a circular saw, a chaff-cutter, a mangel-slicer and an electric milking machine. The animals had never heard of anything of this kind before (for the farm was an old-fashioned one and had only the most primitive machinery), and they listened in astonishment while Snowball conjured up pictures of fantastic machines which would do their work for them while they grazed at their ease in the fields or improved their minds with reading and conversation.

Within a few weeks Snowball's plans for the windmill were fully worked out. The mechanical details came mostly from three books which had belonged to Mr Jones – One Thousand Useful Things to Do About the House, Every Man His Own Bricklayer, and Electricity for Beginners. Snowball used as his study a shed which had once been used for incubators and had a smooth wooden floor, suitable for drawing on. He was closeted there for hours at a time. With his books held open by a stone, and with a piece of chalk gripped between the knuckles of his trotter, he would move rapidly to and fro, drawing in line after line and uttering little whimpers of excitement. Gradually the plans grew into a complicated mass of cranks and cog-wheels, covering more than half the floor, which the other animals found completely unintelligible but very impressive.