Organics are more expensive, so there is no room for waste. If you have too much citrus and want to utilize all of it, just pop it into the freezer whole. You can thaw it and use the juice or peel months later.
If you like citrus in smoothies, you can cut the fruit in halves or quarters before freezing for grinding frozen in a food processor. Using the whole fruit brings added nutrients from the skin and pith.