Calculating your SNGPL gas bill accurately can seem complex, but it becomes easy once you understand the process. In this guide, we’ll show you how to calculate SNGPL bill step by step, using a simple example.
Follow these easy steps to calculate your SNGPL gas bill based on your meter readings and ensure accurate billing.
SNGPL Gas Bill Calculation Process
Step 1: Calculate the Difference Between Readings
Step 2: Apply Pressure Factor
Step 3: Convert to Hundred m³ (Hm³)
Step 4: Calculate mmBTU Using Gas Conversion Value (GCV)
Step 5: Determine Gas Bill Using the Slabs
Slab-Based Calculation Process:
-
Break the Usage into Applicable Slabs
Example: For any usage amount, determine how much gas falls into each slab
-
Calculate mmBTU for Each Slab Portion
mmBTU for a slab portion = (Portion in Hm³ × GCV) ÷ 281.7385
-
Calculate Cost for Each Slab
Cost for a slab = mmBTU for that portion × Rate for that slab
-
Sum All Slab Costs
Total Gas Charges = Sum of all slab costs
Step 6: Add Additional Charges
Applied based on usage tier
Standard monthly charge
Step 7: Apply GST
Final Bill Formula
Where to find the values on SNGPL gas bill?
You can find all the required parameters i.e. meter readings, GCV and pressure factor on your SNGPL gas bill. Use the image below as a reference:
IMPORTANT:
Please note that previous and current meter readings are displayed in 8-digit numbers, however the last three digits are after decimal places.
For example: 0645255 will be taken as 645.255 m3
How to Calculate MMBTU in Gas Bill
When you look at your SNGPL bill, you’ll often see charges based on MMBTU. Many consumers get confused about what this means and how it is calculated. Understanding it will help you see exactly how your gas usage translates into your monthly bill.
What is MMBTU?
MMBTU stands for Million British Thermal Units. It is a standard unit used worldwide to measure energy. In simple words, it shows how much energy you’re using through natural gas.
SNGPL bills consumers in Rs. per MMBTU, which means your monthly cost is directly linked to how many MMBTUs you’ve consumed.
Formula to Calculate MMBTU
The formula used by SNGPL is:
MMBTU = (Gas Consumed in m³ × GCV × Correction Factor) ÷ 1,000,000
Where:
- Gas Consumed (m³): The volume of gas you used (shown on your bill as consumption in cubic meters).
- GCV (Gross Calorific Value): The energy value of the gas, usually mentioned on the bill (e.g., 930–950 BTU/ft³).
- Correction Factor: Adjusts for temperature and pressure differences, also printed on the bill.
Example Calculation
Suppose your bill shows:
- Gas consumed: 100 m³
- GCV: 940 BTU/ft³
- Correction factor: 1.02
Now, applying the formula:
MMBTU = (100 × 940 × 1.02) ÷ 1,000,000
MMBTU = 0.0959
So your gas consumption equals 0.0959 MMBTU.
If the tariff rate is Rs. 1,900 per MMBTU, then your bill for this consumption would be:
0.0959 × 1900 = Rs. 182.21
This is the basic energy cost before adding meter rent, taxes, and other charges.
Why Knowing This Matters
When you understand how MMBTU is calculated, you can:
- Double-check your bill for accuracy.
- Estimate your costs in advance by tracking consumption.
- See how efficiency (like reducing leakage or wastage) lowers your total charges.
I personally started tracking my MMBTU usage monthly, and it helped me identify patterns, like how much more gas I used in winter. It’s a simple way to become more aware of your household’s energy habits.
Conclusion
Calculating your SNGPL bill can be a complex process, but by following the steps outlined above, you can easily determine your total charges. However, to make this process even simpler, you can also use our SNGPL Bill Calculator.
This tool will help you automatically calculate your gas bill by inputting your readings and gas usage, eliminating the need for manual calculations. Give it a try and save time while ensuring accuracy in your bill calculations!