| 調查年度 | 節水 | 節能 | 備註 | ||
|---|---|---|---|---|---|
| 萬噸／年 | CO2減碳量(噸數) | 萬度／年 | CO2減碳量(噸數) | ||
| 2022 | 4,680.8 | 7,536.1 | 10,536.1 | 53,628.7 | |
| 2021 | 4,448.4 | 6,761.6 | 8,965.2 | 45,005.3 | |
| 2020 | 4,230.8 | 6,346.2 | 8,228.6 | 45,392.5 | |
| 2019 | 3,496.0 | 5,594.0 | 6,932.2 | 35,284.8 | |
| 2018 | 3,934.0 | 6,373.1 | 6,837.0 | 37,877.0 | |
| 2017 | 3,624.3 | 5509.0 | 6,787.2 | 37,601.1 | |
| 2016 | 3,398.2 | 5233.3 | 6,638.2 | 35,116.1 | |
| 2015 | 3,188.6 | 4,942.3 | 6,040.8 | 31,895.4 | |
| 2014 | 2,920.4 | 4,555.9 | 4,349.8 | 22,662.5 | |
| 2013 | 2,758.3 | 4,523.7 | 3,650.0 | 19,053.0 | |
| 2012 | 2,450.1 | 4,091.6 | 3,152.5 | 16,771.3 | |
| 2011 | 2,330.5 | 3,938.5 | 263.8 | 1,414.0 | |
| 2010 | 2,155.7 | 4,462.3 | - | - | |
| 2009 | 1,559.2 | 3,227.5 | - | - | |
| 2008 | 1,473.8 | 3,050.7 | - | - | |
| 2007 | 1,505.0 | 3,115.4 | - | - | |
| 2006 | 648.2 | 1,341.7 | - | - | |
| 2005 | 228.5 | 473.0 | - | - | |