Regional Transmission Organizations (RTOs) are entities that manage the electricity transmission grid across a specific region. They ensure that electricity is delivered reliably and efficiently by coordinating the flow of electricity between different power plants and consumers. RTOs help maintain balance between electricity supply and demand, which is crucial for preventing blackouts. RTOs also facilitate competitive electricity markets, allowing various energy producers to sell their power. By overseeing the transmission infrastructure, RTOs promote fair access for all electricity providers, which can lead to lower prices and improved service for consumers. They play a vital role in integrating renewable energy sources into the grid.