KIRBY, B. .; HIRST, E. . How Energy Customers Can Help Electric Utilities N ow User "Load" Can Be a Resource for Utilities’ Ancillary Services. Distributed Generation & Alternative Energy Journal, [S. l.], v. 14, n. 3, p. 24–38, 1999. DOI: 10.13052/dgaej2156-3306.1434. Disponível em: https://journals.riverpublishers.com/index.php/DGAEJ/article/view/14681. Acesso em: 14 may. 2026.