Calculators › Utility bills and rates Weighted contracted gas price calculator
Weighted contracted gas price
Blended commodity price is calculated as (E_fixed × r_fixed + E_spot × r_spot) / (E_fixed + E_spot). Use the stated system boundary and matching input units.
Units IP (US) SI (metric)
r blend = E fixed × r fixed + E spot × r spot E fixed + E spot r_{\text{blend}} = \frac{E_{\text{fixed}} \times r_{\text{fixed}} + E_{\text{spot}} \times r_{\text{spot}}}{E_{\text{fixed}} + E_{\text{spot}}} r blend = E fixed + E spot E fixed × r fixed + E spot × r spot r blend = E fixed × r fixed + E spot × r spot E fixed + E spot r_{\text{blend}} = \frac{E_{\text{fixed}} \times r_{\text{fixed}} + E_{\text{spot}} \times r_{\text{spot}}}{E_{\text{fixed}} + E_{\text{spot}}} r blend = E fixed + E spot E fixed × r fixed + E spot × r spot
Calculator
Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.
Worked example
Given
E fixed E_{\text{fixed}} E fixed 1,600 MMBtu r fixed r_{\text{fixed}} r fixed 6 $/MMBtu E spot E_{\text{spot}} E spot 400 MMBtu r spot r_{\text{spot}} r spot 11 $/MMBtu r blend = 1600 × 6 + 400 × 11 1600 + 400 = 7 r_{\text{blend}} = \frac{1600 \times 6 + 400 \times 11}{1600 + 400} = 7 r blend = 1600 + 400 1600 × 6 + 400 × 11 = 7
Given
E fixed E_{\text{fixed}} E fixed 1,600 GJ r fixed r_{\text{fixed}} r fixed 6 $/GJ E spot E_{\text{spot}} E spot 400 GJ r spot r_{\text{spot}} r spot 11 $/GJ r blend = 1600 × 6 + 400 × 11 1600 + 400 = 7 r_{\text{blend}} = \frac{1600 \times 6 + 400 \times 11}{1600 + 400} = 7 r blend = 1600 + 400 1600 × 6 + 400 × 11 = 7
Symbols and units
Symbol Meaning Unit
r blend r_{\text{blend}} r blend blended commodity price $/MMBtu E fixed E_{\text{fixed}} E fixed contracted fixed-price energy MMBtu r fixed r_{\text{fixed}} r fixed fixed commodity price $/MMBtu E spot E_{\text{spot}} E spot spot-purchased energy MMBtu r spot r_{\text{spot}} r spot spot commodity price $/MMBtu
Symbol Meaning Unit
r blend r_{\text{blend}} r blend blended commodity price $/GJ E fixed E_{\text{fixed}} E fixed contracted fixed-price energy GJ r fixed r_{\text{fixed}} r fixed fixed commodity price $/GJ E spot E_{\text{spot}} E spot spot-purchased energy GJ r spot r_{\text{spot}} r spot spot commodity price $/GJ
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