The windmill represents the Soviet Union’s massive industrialization projects under Joseph Stalin’s leadership. Snowball first presents the windmill as a way to improve life for everyone: it will create electricity, reduce labor, and allow the animals to work only three days per week. The promise of the windmill therefore symbolizes the revolutionary hope that technology and collective labor can create equality and comfort for ordinary workers.
As the novella continues, however, the windmill becomes a symbol of manipulation and exploitation. Napoleon opposes the project at first, then claims it was his own idea after driving Snowball away. The animals devote enormous effort to building it, even while they go hungry and work harder than ever. Boxer sacrifices his health to the project, repeating “I will work harder!” because he believes the windmill will eventually benefit everyone. Instead, the pigs use it to keep the animals exhausted, obedient, and focused on a future reward that never arrives.
The destruction and rebuilding of the windmill also reflect the failures and human cost of Stalin’s industrial programs. When the first windmill collapses, Napoleon blames Snowball rather than admitting mistakes. Later, when Frederick’s men blow it up, the animals are persuaded to see the disaster as a victory. In this way, the windmill becomes tied to propaganda: it is less important as a useful machine than as a symbol the pigs use to control the other animals.
By the end of the novel, the windmill reveals how completely the revolution has been corrupted. The animals believed they were building a better society for everyone, but the finished windmill mainly profits the pigs. The workers who built it remain hungry and overworked, while the ruling class grows richer and more powerful. Orwell uses the windmill to show how political leaders can turn idealistic collective projects into tools of oppression while convincing ordinary people that their suffering is noble and necessary.