Worked electricity bill examples, how to read your bill, LPG and PMUY costs, PNG versus LPG, rooftop solar under PM Surya Ghar and a bill-saving checklist.
Once you know the parts of a tariff, the next step is arithmetic. How much will 350 units cost in Delhi, and how does that change once the state subsidy is applied? What does a bi-monthly bill of 500 units come to under the Tamil Nadu slabs? How many LPG refills does a family use in a year, and is piped natural gas (PNG) cheaper where it is available? Will a 3 kW rooftop solar system under PM Surya Ghar pay back, and how does net metering show on the bill?
The guides here answer those questions with step-by-step examples. Real tariff figures are always labelled with the order they come from; everything else is an illustrative example to show the method. Change the inputs to your own bill in the calculators: the electricity bill estimator, the rooftop solar payback calculator and the cooking gas cost estimator.
Begin with the electricity bill calculation worked examples, then use how to read your electricity bill to match each line to your own statement.
Bill Calculations, Gas Costs and Checklists
Step-by-step bill calculations using the Delhi DERC schedule and TNERC Order No. 6 of 2025, with surcharge, subsidy and common mistakes shown in rupees.
Bill Calculations, Gas Costs and Checklists
A line-by-line guide to an Indian DISCOM bill: consumer details, readings, units, slab charges, fixed charge, surcharges, duty, subsidy, arrears and due dates.
Bill Calculations, Gas Costs and Checklists
How domestic LPG prices are set, the Delhi 14.2 kg reference price, how many days a cylinder lasts, DBTL subsidy and how to work out your yearly gas cost.
Bill Calculations, Gas Costs and Checklists
The ₹30,000, ₹60,000 and ₹78,000 central assistance, how net metering shows on your bill, sizing to your units and a payback example in rupees.
Bill Calculations, Gas Costs and Checklists
Who qualifies for Pradhan Mantri Ujjwala Yojana, what the ₹300 targeted subsidy covers, refill limits, documents, eKYC and what to do if the subsidy is not credited.
Bill Calculations, Gas Costs and Checklists
Compare piped natural gas and LPG cylinders for home cooking: how PNG is billed per SCM, energy equivalence with a 14.2 kg cylinder, connection costs and safety.
Bill Calculations, Gas Costs and Checklists
Practical steps that cut a household electricity bill: stay under slab and subsidy thresholds, right-size sanctioned load, check surcharges, shift load and fix leaks.
