Most PV should be close to point of use so things like roofs and parking lot s which will actually help keep places cooler and nicer.  Wind has a low (not zero) environmental impact if properly placed. Current storage using things like pumped water: https://www.eia.gov/todayinenergy/detail.php?id=31372
I know of building that have been using ice cooling for years for thermal storage and I have a system using thermal mass storage that has been used for year so many of these things are not future but are already in use.
Work on improved electrodes, catalysts, and other components in batteries and fuel cells is progressing rapidly and a number of fuel cells systems are running now. Direct CO2 to ethanol exists and is becoming more efficient but good old electrolysis is being done with improved electrodes that do not involve precious metals. An old but nice graphic of some storage: https://www.greentechmedia.com/articles/read/is-an-energy-storage-tsunami-about-to-wash-over-california