European Distributed Energy Resources Laboratories e.V. (DERlab) association clusters leading laboratories, research institutes and industries in the fields of Smart Grids and green Distributed Energy Resources. The association develops joint requirements and quality criteria for the connection and operation of distributed energy resources (DER) and strongly supports the consistent development of DER technologies. DERlab offers testing and consulting services for distributed generation (DG) to support the transition towards more decentralised power systems. Find out more about DERlab at www.der-lab.net.