Recent changes to electricity regulations have shifted the role of power from simple production and consumption to active management. Batteries and electric vehicles can now contribute to balancing the grid while providing owners with cost savings or additional revenue. Many owners of solar photovoltaic systems are unaware that they are not required to keep both supply and generation with the same provider. The new rules allow them to retain an electricity purchase contract with their current supplier. At the same time, any excess electricity they generate can be sold to a different company. This separation creates an opportunity for households to turn surplus solar power into a source of income.