Renewable Energy Mix Calculator

Optimal generation mix for target carbon reduction.

Coal (%)

Natural gas (%)

Oil (%)

Nuclear (%)

Wind (%)

Solar (%)

Hydro (%)

Total demand (TWh/yr)

Target CO2 reduction (%)

Tab to move between fields

Required renewable share (%)

52.4%

Current intensity (g CO2/kWh)373.2

Target intensity (g CO2/kWh)186.6

Current emissions (Mt CO2)1,493

Target emissions (Mt CO2)746.5

Current renewable share (%)20%

Fossil % to replace32.4%

Emissions avoided (Mt)746.5

How to Use This Calculator

Enter percentage share for coal, gas, oil, nuclear, wind, solar, and hydro — they should sum to 100%.
Set total electricity demand (TWh/yr) and your target CO₂ reduction (%).
Review Weighted Grid Emission Factor, Required Renewable Share (%), and current grid CO₂ per TWh.
Use the required renewable share as a planning target for utility-scale energy transition.

How the result changes with Target CO2 reduction (%)

Coal (%): Coal's share of electricity generation.
Natural gas (%): Natural gas share of generation.
Oil (%): Oil-fired generation share.
Nuclear (%): Nuclear power share.
Wind (%): Wind energy share.
Solar (%): Solar energy share.
Hydro (%): Hydroelectric share.
Total demand (TWh/yr): Annual electricity demand in terawatt-hours.
Target CO2 reduction (%): Desired percentage reduction in grid CO2 emissions.

Required renewable share (%): Renewable generation needed to meet the CO2 reduction target.
Current intensity (g CO2/kWh): Weighted average lifecycle CO2 intensity of current mix.
Target intensity (g CO2/kWh): Grid intensity needed to meet reduction target.
Current emissions (Mt CO2): Annual CO2 emissions from electricity generation.
Target emissions (Mt CO2): Annual emissions after meeting the reduction target.
Current renewable share (%): Current wind + solar + hydro percentage.
Fossil % to replace: Fossil generation share that must shift to renewables.
Emissions avoided (Mt): Annual CO2 emissions avoided by meeting the target.

Identify Input Parameters
4 parameters
Coal (%) = 20, Natural gas (%) = 40, Oil (%) = 1, Nuclear (%) = 19 = 9 input(s) provided
Calculate Required renewable share
Required renewable share = Math
52.4 = 52.4
Calculate Current intensity
Current intensity = (
373.2 = 373.2
Calculate Target intensity
Target intensity = currentIntensity * (1 - targetReductionPct / 100)
186.6 = 186.6