净零排放计算器
使用净零排放计算器规划实现碳中和的路径。评估当前排放基线，设定减排目标和碳抵消方案，计算达到净零CO₂排放所需的时间和投资。
Residual Emissions at Target
484 metric tons CO2e
Residual Emissions at Target vs Years to Net Zero
公式
How to Plan for Net Zero
Net zero means reducing emissions as much as possible and offsetting the remainder.
Formula
Residual Emissions = Current * (1 - Annual Reduction %)^Years
Offsets Needed = Residual Emissions
The Science Based Targets initiative requires at least 90% absolute reduction before relying on offsets for net zero. Remaining emissions must be neutralized through high-quality carbon removal.
计算示例
A company emitting 1,000 tons CO2e reduces 7% annually over 10 years with $30/ton offsets.
- 01Residual: 1,000 * (1 - 0.07)^10 = 1,000 * 0.484 = 484 metric tons
- 02Total reduced: 1,000 - 484 = 516 metric tons
- 03Offsets needed: 484 metric tons/year
- 04Offset cost: 484 * $30 = $14,520/year
常见问题
What does net zero mean?
Net zero means that any greenhouse gases emitted are balanced by an equivalent amount removed from the atmosphere, resulting in no net increase in atmospheric CO2.
What reduction rate is needed for 2050 net zero?
To reach net zero by 2050 from current levels requires roughly 7-10% annual emission reductions, depending on starting point and how much residual can be offset.
What counts as a valid offset for net zero?
For SBTi net zero, only carbon removal offsets count (direct air capture, enhanced weathering, afforestation). Avoidance credits do not qualify for neutralizing residual emissions.