1 day of compost = two propane tanks for the bbq. As a propane user, this is a must! The builder told me that is you have one cow, the manure from one day is enough for most home use. Heck-even as an outhouse it would work!
Solar shingles are a variation of solar panels in the form of tiles or shingles. These solar panels resemble roofing tiles in size and texture and can be used for a more aesthetically pleasing solar array.