Telecom Site Energy Cost Calculator (Grid, Diesel, Solar)
Enter the bill kWh, diesel litres and prices. Choose how the site is powered and see the total energy cost and cost per kWh.
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Telecom Site Energy Cost Calculator (Grid, Diesel, Solar) by TheCalcTools
How the Telecom Site Energy Cost Calculator (Grid, Diesel, Solar) works
Choose the power mode: CP only, CP + DG, CP + solar, or CP + DG + solar.
Enter the grid kWh and tariff from the electricity bill, plus any fixed charges and taxes.
For DG sites enter diesel litres, price and the generator’s kWh per litre; for solar sites enter solar kWh and its cost per kWh.
The calculator adds each source’s cost and divides by total energy to give the blended cost per kWh, in PKR and USD.
The formula
Worked example
Using the default values shown in the calculator:
| How is the site powered? | CP + diesel generator (DG) |
|---|---|
| Billing period (days) | 30 |
| Grid energy on the bill (kWh) | 2400 kWh |
| Grid tariff (PKR per kWh, all-in) | Rs62 |
| Fixed and other bill charges (PKR) | Rs0 |
| Extra tax not already in the rate (%) | 0 % |
| Diesel used (litres) | 350 L |
| Diesel price (PKR per litre) | Rs275 |
| Generator output (kWh per litre) | 3.2 |
| Solar energy used (kWh) | 600 kWh |
| Solar cost (PKR per kWh: O&M or levelised) | Rs6 |
| Exchange rate (PKR per USD) | 280 |
- Grid: 2,400 kWh × Rs 62 = $148,800. Diesel: 350 L × Rs 275 = $96,250.
- Total energy cost = $245,050 (about $875.18 USD).
- Energy used = 3,520 kWh, so the blended cost is Rs 69.62 per kWh; diesel supplies 31.8% of it.
Result:
| Grid cost (PKR) | Rs 148,800 |
|---|---|
| Diesel cost (PKR) | Rs 96,250 |
| Solar cost (PKR) | Rs 0 |
| Total energy cost (PKR) | Rs 245,050 |
| Total energy cost (USD) | $875.18 |
| Total energy used (kWh) | 3,520 |
| Blended cost (PKR per kWh) | 69.62 |
| Cost per day (PKR) | Rs 8,168 |
| Annualised cost (PKR) | Rs 2,981,442 |
| Diesel share of energy | 31.8% |
| If all energy came from the grid (PKR) | Rs 218,240 |
| Hybrid vs grid-only (PKR, negative = saving) | Rs 26,810 |
Frequently asked questions
Which tariff should I enter?
The effective rate on your bill is best: total electricity charges divided by units (kWh). If you enter the base tariff, add GST and other taxes in the tax field.
How do I find my generator's kWh per litre?
Divide the energy it supplied (kWh from the genset meter or from load × run hours) by the litres consumed. Diesel gensets usually deliver around 3–3.8 kWh per litre at moderate load.
Why is DG so expensive per kWh?
At Rs 275 per litre and 3.2 kWh per litre, diesel energy costs about Rs 86 per kWh before maintenance, usually more than grid or solar energy.
How is solar cost counted?
Solar energy has almost no fuel cost, so enter your O&M cost or the levelised cost per kWh (capital cost spread over lifetime output). Enter 0 to ignore it.
Sources and further reading
- Pakistan NEPRA: tariff information
- Wikipedia: Diesel generator
- Wikipedia: Levelized cost of electricity
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This calculator gives estimates for planning only. Electrical installations must be designed, checked and carried out by qualified personnel following local codes and the equipment manufacturer's data. Never rely on this result alone for safety-critical decisions. See our disclaimer.