Based on the available information, there does not seem to be any direct fees for using the Enel Investor App or accessing online services. The app allows users to track the company’s performance, including stock prices, financial reports, and news updates, and is available for free on both the App Store and Google Play. However, as the app primarily provides financial information rather than energy-related services, I would still need to assess whether any hidden fees are associated with energy management or smart grid solutions. It’s important to remember that while the app is free, the core services that Enel provides—such as electricity generation, distribution, and energy management—likely come with associated usage costs. Therefore, even though the app itself does not charge fees, I should be mindful of the underlying costs tied to the services I engage with.