Live Demo — Diesel vs Solar CO₂ Comparison Calculator
Input your annual energy demand and emission factors to see diesel vs solar CO₂, total life-cycle reduction, equivalent trees and carbon value instantly.
Diesel vs Solar CO₂ Comparison Calculator
Free professional carbon emission calculator for solar lighting projects. Input your annual energy supply and service life plus the diesel consumption rate, diesel CO₂ factor, solar embodied carbon, tree absorption and carbon price to compare diesel generator emissions with solar PV emissions, and quantify the annual and life-cycle CO₂ reduction in lb and US tons, equivalent trees and the carbon value in USD.
Key Features
Energy Supply Parameters
Set the annual energy supply in kWh/year (luminaires × power × hours/night × 365) and the project service life.
Diesel Emission Factors
Adjust the diesel consumption rate (0.066-0.092 gal/kWh) and the CO₂ factor (26.3 lb/gal full life cycle, 21.9 combustion).
Solar Embodied Carbon
Account for PV manufacturing embodied carbon (0.110-0.198 lb/kWh) so the solar comparison covers its full life cycle.
CO₂ Emission Calculation
Compute annual diesel emissions (E × 0.079 × 26.3 lb) and solar emissions (E × 0.154 lb), then the annual reduction.
Life-Cycle Reduction & Trees
Extend the annual reduction across the service life and translate it into equivalent mature trees (1 tree ≈ 33 lb CO₂/year).
Carbon Value & ESG Reporting
Value the total avoided emissions at your carbon price per metric tonne for carbon-inclusive, carbon-trading and ESG reporting.
Technical Specifications
| Platform | HTML5 Web App | Android (via WebView) |
| Core Calculation | CO2_diesel = E_year × 0.079 gal/kWh × 26.3 lb/gal; CO2_solar = E_year × 0.154 lb/kWh; ΔCO2 = CO2_diesel - CO2_solar; CO2_total = ΔCO2 × T; N_trees = ΔCO2 / 33 lb; Carbon_value = CO2_total × price / 2204.62 |
| Annual Energy Supply | kWh/year (luminaires × W × h/night × 365) |
| Service Life | 1+ years (10 typical) |
| Diesel Consumption Rate | 0.01+ gal/kWh (typical 0.066 - 0.092) |
| Diesel CO₂ Factor | 26.3 lb/gal full life cycle (combustion 21.9 lb/gal) |
| Solar Embodied Carbon | 0.110 - 0.198 lb CO₂/kWh |
| Tree Absorption | 22 - 44 lb CO₂/year per tree (default 33 lb) |
| Carbon Price | USD/metric tonne (default $8.33; 1 US ton = 2,000 lb ≈ 0.907 t) |
| Industry Standards | IPCC 2006/2019 Guidelines, ISO 14064-1, GHG Protocol, ISO 14067 |
| Output | Annual diesel & solar CO₂ (lb/US tons), annual reduction, total life-cycle reduction, equivalent trees, carbon value (USD) |
Frequently Asked Questions
Which emission factors are used for diesel?
The calculator applies the Tier-1 factors from IPCC guidelines: 21.9 lb CO₂ per gallon for combustion only, and 26.3 lb/gal for the full life cycle including well-to-tank extraction and transport. The default uses the full life-cycle factor for a complete comparison.
What does solar embodied carbon mean?
Solar panels produce no CO₂ while generating, but manufacturing them has a carbon footprint of roughly 0.110-0.198 lb CO₂/kWh across the full life cycle. Including this embodied carbon means the solar side is counted fairly instead of being treated as literally zero-emission.
What do the "equivalent trees" mean?
A mature tree absorbs about 22-44 lb (10-20 kg) of CO₂ per year, defaulting to 33 lb. The calculator divides the annual (or life-cycle) emission reduction by that figure to express the offset in a familiar unit — e.g. about 470 trees for a typical 10-year 100W × 20 street-lighting project.
Why is it important to use actual lighting hours?
E_year must reflect the true duty cycle, e.g. 20 × 0.1 kW × 11 h × 365 = 8,030 kWh/year for street lighting. Mistakenly using 24h × 365 continuous supply (17,520 kWh) overstates the diesel-vs-solar reduction by about 2.2 times, so realistic inputs keep carbon reporting credible for ESG and carbon-trading purposes.
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