Many ways! The raw materials in R-Control SIPS have low energy requirements to make them. The structural facings of R-Control SIPS are made from renewable controlled growth wood resources. For years and years R-Control SIPS structures will save fuel used for heating and cooling. The resulting pollutants from burning fuels like natural gas, oil and coal are dramatically reduced. The environment is then spared the contributing “green house” effect of burning additional fuels that conventionally built structures require.