Virtual power plants help with the management of power generation, storage and usage in electricity grids. They serve as a source of additional electrical power that can be called on flexibly (for example from PV or batteries), they can help to reduce demand (for example by powering down devices during peak times) and they can store electricity (for example in water heaters or EVs). VPPs are a capital and cost-efficient choice for utilities. VPPs reduce transmission and distribution needs and costs. VPPs create new revenue streams for both consumers and utilities, and reduce the overall costs of the electricity system. VPPs provide resilience services for the grid in the event of outages of large scale generation plants.