MACC Calculator
Compute macccalculator using validated scientific equations. See step-by-step derivations, unit analysis, and reference values.
Formula
MAC = Total Abatement Cost / Emissions Reduced (tonnes CO2)
Marginal Abatement Cost divides total cost of an emission reduction measure by tonnes of CO2 avoided.
Worked Examples
Example 1: Industrial Efficiency Upgrade
Problem: Abatement cost: $120k reducing 3,000 t/yr. Implementation: $120k. Savings: $25k/yr. Life: 10 yr.
Solution: MAC=$120k/3,000=$40/t\nSavings=$250k\nNet Cost=-$130k\nTotal Reduced=30,000t\nNet MAC=-$4.33/t
Result: MAC: $40/t | Net MAC: -$4.33/t
Example 2: Carbon Capture
Problem: Abatement: $500k reducing 5,000 t/yr. Implementation: $500k. Savings: $10k/yr. Life: 15 yr.
Solution: MAC=$100/t\nSavings=$150k\nNet=$350k\nReduced=75,000t\nNet MAC=$4.67/t
Result: MAC: $100/t | Net: $4.67/t
Frequently Asked Questions
How does the MACC help climate policy development?
The MACC provides policymakers with a structured framework for evaluating emission reduction strategies. By ranking options cheapest to most expensive, it identifies the most cost-effective pathway to achieve targets. It helps determine optimal carbon tax levels and quantifies total investment needed for specific reduction goals. Revenue from negative-cost measures can fund more expensive interventions.
How does the breakeven carbon price relate to MACC?
The breakeven carbon price is the carbon tax at which a specific measure becomes economically viable. If net MAC is $30/tonne, the measure is worthwhile when carbon price exceeds $30. Measures with negative MACs are already viable without any carbon price. The MACC visually shows which measures fall below any given carbon price line, indicating total achievable abatement.
What are the main limitations of MACC analysis?
MACC assumes independent measures, but interactions between options can change individual costs. Static analysis may not capture technology learning and market development. Transaction costs, institutional barriers, and behavioral factors are often excluded. Results are sensitive to assumptions about discount rates, energy prices, and technology costs. Sensitivity analysis is essential.
How do I get the most accurate result?
Enter values as precisely as possible using the correct units for each field. Check that you have selected the right unit (e.g. kilograms vs pounds, meters vs feet) before calculating. Rounding inputs early can reduce output precision.
Is MACC Calculator free to use?
Yes, completely free with no sign-up required. All calculators on NovaCalculator are free to use without registration, subscription, or payment.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.