We use 100% renewable energy to make Naked Sprout, and we're determined to use it as efficiently as possible. Most of the energy in paper making is used to generate the heat that dries the pulp, so if we can find a way to re-use this heat we can make serious energy savings. There are two key challenges here. 1) once heat has been used the temperature lowers to the point where it will no longer dry the paper effectively and 2) once used, heat is diffused through the system and it becomes difficult to "collect" it again to redirect back to the start of the drying process.In that area, our factory has engineered and patented an innovative system which allows us to upgrade recirculating heat. In plain terms, it means that we found a way to warm up existing heat after it has been used, so we can push the temperature again to the desired level with much less energy than starting over at ambient temperature. As a result our heating requires up to 70% less energy than alternative systems, depending on ambient conditions and paper grade. Our factory is also signed up to the ISO 50.001 program which regulates energy saving efforts. Every year they receive a committee of engineers which evaluate the savings made in the previous year, and together agree on the target savings for the year ahead.In addition to this changes such as reducing from 3 plys to 2 plys (maintaining the same overall thickness but reducing energy consumption by a third), not using tape to seal our boxes - (we use vegan friendly non polymer glue,) not printing on our cores - (saving unnecessary ink) and not wrapping our rolls to make them 'pretty' (we think our rolls are beautiful as they are) - all demonstrate our commitment to lowering emissions.