Already, electricity costs for ratepayers are spiking across the United States, in part because electric utilities, in many places, operate as monopolies that are effectively unaccountable to the customers they serve. But handing our power grid over to private equity — whose extractive business model relies on securing fast returns for investors — could make things much worse, advocates warn.“Private equity ownership of Minnesota Power will likely mean higher bills, less accountability, and more risk for Minnesotans,” Alissa Jean Schafer, the climate and energy director at the Private Equity Stakeholder Project, a watchdog group, said in a statement following news of the deal. “BlackRock’s short-term profit model is simply incompatible with the long-term needs of a public utility.”