Skylights have an interesting capability of controlling the climate inside the building in which they are installed. If you plan to use your skylights for this purpose, I would greatly recommend large skylights, as they enable much faster change, although if your home already has a good climate, you can do this with smaller skylights. The key thing to understand about climate control with skylights is how it works. When the skylight is closed, the air inside is trapped, and is warmed up by the light coming through the skylight, thus increasing the temperature and removing circulation of the air in the building. During the winter, this gives a warm feel, with less drafts. When the skylight is open, however, the air is still heated up, but rises out of the skylight, generating low pressure below it, and producing circulation. This gives the effect of a cooling breeze in the summer. Those are the two positions which you should use with your skylight, and when it is winter or autumn, you should consider alternating between the two, as and when necessary. There is no particular method to controlling a building's climate with skylights, but I hope this gives you an overview of how you can try to do it. It requires a bit of practice, but it soon becomes easy.