I live in an area where it is very cloudy most of the year, but dry and sunny (and sometimes very hot) for three months of the year. In order to get adequate solar power during the cloudy months, I have to have about 5X the solar panel area that I'd need in summer. My question is what to do with the excess power in the summer. My needs are pretty basic: refrigerator, lighting, charging a few electronic devices. I don't need or want to add more electric luxuries. My thought was to add Peltier thermoelectric cooling to the battery box, which should improve battery life(it can get up to ~44 degrees C /110 F here.) Peltier coolers aren't efficient, but they are by far the simplest cooling method, and they are cheap on ebay. I would use a thermostat and voltage level detector to make sure that they only operate during the sunniest/hottest part of the day. Has anyone tried this? Is there any downside? If so, what size Peltier cooler did you use? Any other thoughts on using the excess solar power?