Help favorable towns to grow and glow by producing clean energy to make them run in this Time Management game that is exciting and building areas. Watch out for power overload! You can experience blackouts and unhappy renters, should you build too quickly. Wind farms, assemble solar towers, and dispatch technicians to ensure everyone is energy efficient. Make your neighborhoods appropriate and fancy by constructing tennis courts, swimming pools, boutiques and much more in Build-a-lot 4: Power Source.