$Sunrun(RUN)$ According to the U.S. Department of Energy, there are already 30 to 60 gigawatts (GW) of virtual power plants in operation today. 目前全美VPP容量大概30-60GW，According to the web search results, Sunrun has a portfolio of over 4 GW of distributed energy resources in North America, including solar, wind, battery storage, and demand response。Sunrun容量占十分之一强。Based on the web search results, the company that has the largest electricity capacity of the virtual power plant in America currently is Enel, an Italian multinational energy company. Enel has a portfolio of over 4 GW of distributed energy resources in North America, including solar, wind, battery storage, and demand response. 最高容量的另外一个是Enel 。按照上述DOE计划，折衷一下，VPP容量到2030年应该有两倍的增幅，也就是到120GW。