🔥 Heating Fuel Comparison Calculator

HHV = fuel energy purchased at meter/tank  |  Thermal = useful heat delivered to space (HHV ÷ AFUE  or  Price/kWh ÷ COP → $/MMBTU → $/GJ)  |  1 MMBTU = 1,000,000 BTU = 1.055056 GJ  |  Electric COP: enter as ×100  (COP 2.5 → 250)

⚡ NS Power Residential Rate: $0.18187/kWh 🌐 View Rates Loaded from saved settings (last saved: 2026-03-22 18:36)
🛢 NS Furnace Oil (#2): $2.022/L (202.2¢/L) 🌐 NRCan Prices Loaded from saved settings (last saved: 2026-03-22 18:36)
🔥 Propane (CA Benchmark): $1.010/L 🌐 GlobalPetrolPrices Loaded from saved settings — ⚠ National benchmark (last saved: 2026-03-22 18:36)
🔵 Eastward Energy Nat. Gas: $29.016/GJ | $1.0805/m³ 🌐 Eastward Energy 🗺 Gas Map Loaded from saved settings (last saved: 2026-03-22 18:36)
🌿 NS Power CO2 Intensity: 502.3 g/kWh 🌐 NS Power Emissions Loaded from saved settings — CO2: 502.3 g/kWh (last saved: 2026-03-22 18:36)
✏ Yellow cells are editable  |  🟢 Green = Thermal (delivered heat)  |  🟠 Orange = HHV (fuel purchased)  |  ★ Cost/GJ Thermal is the primary comparison column  |  Table auto-sorts ascending
Fuel Type Fuel Unit Price/Unit ($) Heat Content
(BTU/unit HHV)		 Price/MMBTU
(HHV)		 Appliance Type Eff. Type Efficiency
Input		 Approx. Eff.
(Display)		 Thermal (Useful Heat Delivered) HHV (Fuel Purchased)
Cost/MMBTU
(Thermal)		 Cost/kWh
(Thermal)		 Cost/GJ
(Thermal) ★		 Cost/MMBTU
(HHV Fuel)		 Cost/kWh
(HHV Fuel)		 Cost/GJ
(HHV Fuel)

⚡ Fuel Savings Calculator — Enter QTY of fuel units to calculate energy & cost

Fuel Type Fuel Unit QTY of Fuel
(HHV basis)		 Usable Energy
(th) kWh		 Energy
(HHV) kWh		 Energy
(HHV) GJ		 Cost ($) CO2
(t CO2e)		 CO2 Intensity
(g/kWh)		 Calculate

📈 Price History Trends

Price history is stored in your browser (localStorage). Each time you manually update a price in the Calculator tab and click "Apply", the value is recorded here.