Arcelli assumed his current position in 2023. In H1 2025, ACWA Power recorded $16.2 billion in assets and $990.6 million in revenues, having signed nine Power Purchase Agreements totaling 20GW of new power capacity, including a 15 GW PPA with SAPCO and Badeel in July, with a total investment value of approximately $8.3 billion. It also signed two Water Purchase Agreements (WPAs), adding 700,000 cubic meters per day of new desalination capacity once operational. Arcelli is an executive fellow at IESE Business School and serves on the advisory board of the International Energy Agency.