Primary Tool
Emissions
Track live PJM generation mix, delivered grid carbon intensity, and compare electricity against onsite natural gas emissions assumptions.
PJM Grid Emissions
Live grid mix and carbon intensity from PJM through a server-side route, so the API key stays in Cloudflare.
Carbon intensity (delivered)
-lbs CO2e/MWh
Grid Mix with Emissions
No live grid mix data is available. The scenario comparison below still works with reference cases.
Natural Gas Customer Emissions
Constant assumptions: 1.035 MMBtu per MCF and 117 lb CO2 per MMBtu direct combustion.
| Direct CO2 (combustion) | 117.0 | lb CO2/MMBtu |
| Methane upstream (CO2e) | 104.1 | lb CO2e/MMBtu |
| Total CO2e per MMBtu | 221.1 | lb CO2e/MMBtu |
| Total CO2e per MCF | 228.9 | lb CO2e/MCF |
| Total CO2e per thermal kWh | 0.754 | lb CO2e/kWh |
Electric vs. Gas Comparison
| Option | lb CO2e per kWh |
|---|---|
| PJM electricity (delivered) | - |
| Natural gas (direct CO2 only) | 0.399 |
| Natural gas (including leakage) | 0.754 |
Delivered grid emissions assume 5.00% transmission and distribution losses. Fuel-specific factors come from the engineering constants in lib/emissions.ts.