Street lighting costs are a considerable portion of the budgets of cities and municipalities, which is mainly due to high energy prices. Nowadays, it is increasingly common to look for ways to lower them. A safe solution is to reduce light levels by using a central reduction during the lowest traffic hours. This is accomplished by power reducers. They allow large savings of up to 40%, while maintaining road-specific performance. Power reducers are environmentally friendly devices, limiting the consumption of electricity, contributing to the reduction of electricity costs, but also to the reduction of greenhouse gas emissions.