Yes, because you can't sign up for two programs at the same time. If you are a Winter Credit customer, you will automatically be invited to switch from Winter Credit to the Hilo program once your devices have been connected to Hilo, without having to make any prior changes in your Hydro-Québec Customer Space. If you're a Flex rate customer, you must first go to your Hydro-Québec Customer Space to switch to Rate D. Once you've done that, you can unsubscribe from the program or rate in Éco Sinopé to select the Hilo option. To do so, go to the Éco Sinopé feature and click on the Unsubscribe button at the bottom of the page.