| 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) | ||
| 2021 | 4,070 | 6,186.5 | 8,965 | 45,004.3 | |
| 2020 | 4,230.80 | 6,346.20 | 8,228.60 | 45,392.50 | |
| 2019 | 3,496.00 | 5,594.00 | 6,932.20 | 35,284.80 | |
| 2018 | 3,934.00 | 6,373.08 | 6,837.00 | 37,876.98 | |
| 2017 | 3,624.34 | 5509.00 | 6,787.20 | 37,601.09 | |
| 2016 | 3,398.22 | 5233.26 | 6,638.20 | 35,116.08 | |
| 2015 | 3,188.57 | 4,942.28 | 6,040.8 | 31,895.42 | |
| 2014 | 2,920.42 | 4,555.86 | 4,349.8 | 22,662.46 | |
| 2013 | 2,758.34 | 4,523.68 | 3,650.0 | 19,053.00 | |
| 2012 | 2,450.06 | 4,091.61 | 3,152.5 | 16,771.30 | |
| 2011 | 2,330.48 | 3,938.52 | 263.8 | 1,413.97 | |
| 2010 | 2,155.71 | 4,462.32 | - | - | |
| 2009 | 1,559.19 | 3,227.52 | - | - | |
| 2008 | 1,473.77 | 3,050.71 | - | - | |
| 2007 | 1,505.04 | 3,115.43 | - | - | |
| 2006 | 648.17 | 1,341.71 | - | - | |
| 2005 | 228.49 | 472.97 | - | - | |