NCC 2025 makes solar mandatory on new commercial buildings, and the required system size is larger than most design teams expect. Here's what Part J9D5 requires, why it needs to be in the design from day one, and why it takes both a sustainability consultant and an electrical engineer to get it right.

The biggest problem with standalone power systems isn't the equipment. It's commissioning — and the shortage of people who can do it well. AI tools are starting to close that gap, but not in the way most people expect.