US utility Duke Energy should refile its 2020 integrated resource plan (IRP) to effectively allow for the diversity benefits of solar and storage to be captured, it has been argued by energy consulting firm E3.

Arizona Public Service (APS) has announced a plan to make solar energy dispatchable into the evening using batteries, calling for the deployment of 850MW of energy storage by 2025.

Australia-headquartered engineering and professional services company WorleyParsons said its first EPC contract for a battery storage project in the US shows how the energy sector is moving from “mega projects” to “portfolios of smaller projects”.