You must set enough time to completely finish your solar panel.You may be an expert on how to make a solar panel but the time must be considered when doing it. You must bear in mind that the panels should be built in a set time frame. This is because some of the materials are changing shape and size, and some of the materials are actually expiring. That is why you could not use it immediately. So when working with your solar panel, make sure you actually have enough time to do it. Set a good amount of time frame before you actually start doing on it.