Learn more about the basics of connecting with ISO Find out how and where to start connecting with the ISO network. Here are the rules and processes that an energy supplier must follow to connect generators and other resources to the electricity grid. Needs Response Providers – Learn more here as needs response providers that can aggregate customers who can reduce their electricity needs (charge) and can participate in iso-daily markets, in real time and as ancillary service providers as Proxy Demand Resource (PDR) or Reliability Demand Response Resource (RDRR). Connected resources looking for a market to sell electricity – read more Here these are resources that are already interconnected, but which are not yet involved in the wholesale electricity market, or interconnected distribution resources seeking to participate in the wholesale market. Related contentDefinitions and acronyms Generation transmission planning.