Shifting a job to a greener hour saves no energy. Myth or fact: carbon-aware scheduling cuts your energy use? Myth. It changes when work runs, not how much it uses. The job still uses as much electricity. The grid is just cleaner then. Worse, a falling carbon figure can hide growing energy use. GreenCode researchers found that cleaner hours cut carbon, but not always energy. Here is the fix you can use today. Track energy per unit of work, alongside carbon. Use scheduling on top of efficiency work, never instead of it. And check that a greener job has not got slower or bigger. Move flexible work using tools like the Carbon Aware SDK, which gives grid carbon data. And count energy per unit of work with the Software Carbon Intensity method. GreenCode helps tackle this by measuring energy before any change, and after each pass. Same setup, same load. A saving counts only if quality, security and errors hold. That was GreenCode Tech Tip number twenty-seven. Follow for the next tip, and find more on greencode.ai/tech-tips.