RTO Insider reports on United's webinar "Expanding Virtual Power Plants Across the U.S.," which explored how virtual power plants (VPPs) can help regulators, utilities, and other grid stakeholders manage key challenges facing the grid, and the importance of scaling VPPs to meet the country's energy, affordability, and reliability needs. The article quotes United's Chloe Holden, who moderated the discussion, and expert panelists featured on the webinar, who shared their insights on the future of VPPs.