What Are DISCOMs, India Power Distribution And Smart Meters Explained

In the previous part of this power sector series, we followed electricity through high voltage transmission lines and substations. The final journey begins when that electricity enters a local distribution network and moves towards homes, farms, shops, offices, and factories.

This final link is managed by distribution companies, commonly called DISCOMs. They buy electricity, operate the local network, issue bills, collect payments, and use that money to pay generators and transmission companies. This makes distribution the financial gateway of the entire power sector.

What Are DISCOMs

A DISCOM is a licensed utility responsible for distributing electricity within a defined area. It receives bulk power from the transmission system, reduces the voltage through local substations and transformers, and delivers usable electricity to consumers. It also forecasts demand, manages outages, provides connections, reads meters, prepares bills, and handles complaints.

Most distribution utilities in India are controlled by state governments, although private licensees operate in selected areas. The latest Power Finance Corporation report covered 65 of 72 distribution utilities, including 42 state DISCOMs, 12 private DISCOMs, and 11 power departments.

How Do DISCOMs Earn Money

DISCOMs earn most of their operating revenue by selling electricity to domestic, agricultural, commercial, and industrial consumers. They may also receive wheeling and open access charges, meter and service charges, late payment charges, and revenue from electricity sold to other utilities.

A DISCOM cannot freely choose its retail tariff. The State Electricity Regulatory Commission reviews its expected costs and allowed return, then approves the annual revenue requirement and consumer tariffs. Bills commonly include a fixed or demand charge, an energy charge, and approved adjustments for changes in fuel and power purchase costs.

Tariffs differ across consumer groups. Commercial and industrial users often pay more than the average cost, while agriculture and some household categories pay less, and state governments compensate the DISCOM for policy driven subsidies. The model works only when costs are recovered, bills are accurate, consumers pay, and governments release promised subsidies on time.

Why DISCOMs Historically Lost Money

The first problem is power purchase cost, which formed 76 % of total cost for the utilities covered by PFC in the FY24 to 25. Coal prices, transport costs, exchange prices, and peak demand can raise this expense quickly, while delayed tariff changes can leave the DISCOM funding the difference.

The second problem is Aggregate Technical and Commercial loss, or AT&C loss. It captures electricity that fails to become collected revenue because of network loss, theft, weak metering, billing gaps, and poor collection. If 100 units enter the network but only 85 turn into collected revenue, the missing value is broadly reflected in an AT&C loss of about 15 %.

The third problem is the Average Cost of Supply and Average Revenue Realised gap, commonly called the ACS ARR gap. If the DISCOM spends 7 rupees to supply one unit but realises only 6 rupees, the gap becomes a major annual loss. Subsidy delays, unpaid bills, poor demand forecasting, excess fixed charges, expensive peak purchases, and the exit of high paying users can widen it further.

Which Policies Changed The DISCOM Story

India has tried several reform programmes, but no single policy created the recent improvement. The change came from debt restructuring, performance linked funding, tighter payment rules, better subsidy accounting, more timely cost recovery, and gradual improvement in billing and collection.

UDAY was launched in 2015 to support state owned DISCOMs, with participating states expected to take over 75 % of eligible debt. This reduced interest pressure, but debt transfer alone could not permanently fix a utility that continued losing money on each unit.

The Revamped Distribution Sector Scheme was launched in July 2021 with an outlay of 3.04 lakh crore rupees and estimated central support of 97,631 crore rupees. By August 2026, projects worth 1.53 lakh crore rupees for loss reduction infrastructure and 1.31 lakh crore rupees for smart metering had been sanctioned, with assistance linked to results. State borrowing space and lending by Power Finance Corporation and REC were also linked to reform conditions.

The Late Payment Surcharge Rules of 2022 converted old supplier dues into scheduled monthly installments and created consequences for continued default. Legacy dues reported by 13 states fell from 1.40 lakh crore rupees in June 2022 to 4,109 crore rupees by February 2026, improving payment visibility for generators and transmission companies. 

The Electricity Distribution Accounts and Additional Disclosure Rules of 2024 standardised reporting of revenue, subsidies, receivables, power costs, AT&C loss, and the ACS ARR gap. Better accounting does not create cash, but it makes uncertain income and overdue receivables easier to identify. 

How Smart Meters Change Distribution

A smart meter records electricity use digitally and communicates the data without depending on a manual monthly reading. It can provide near real time usage information, support remote reading, flag unusual consumption, improve outage visibility, and enable prepaid billing.

For consumers, this can mean clearer usage information, easier recharge, alerts, and fewer estimated bills. For DISCOMs, prepaid collection can reduce receivables and working capital needs, while better data can improve billing and demand forecasting.

Meters on feeders and distribution transformers let the utility compare how much electricity entered an area with how much was billed. This makes theft, leakage, or faulty equipment easier to locate. A smart meter improves measurement, but network investment is still needed to reduce technical losses.

Under RDSS, smart meter projects generally use a service model in which a provider installs, operates, and maintains the system. Much of the payment is made over seven to ten years on a per meter basis and is linked to performance, so the opportunity includes communication, software, data management, and maintenance.

How Far Has The Smart Meter Rollout Reached

As of June 30, 2026, RDSS had sanctioned 20.33 crore smart meters, including consumer, transformer, and feeder meters. Around 5.73 crore had been installed under RDSS, while 7.24 crore had been installed across all schemes.

The rollout was still far from complete, and the current sunset date of RDSS is March 31, 2028. The government cited tender delays, contract execution, technology integration, partnership challenges, and weak consumer engagement among the reasons for slower progress.

Consumer trust remains essential. Billing disputes, communication failures, weak grievance handling, and cyber security concerns can slow acceptance even when the technology works as designed.

Did Indian DISCOMs Really Become Profitable

The latest PFC report shows a major improvement. The covered distribution utilities moved from a combined loss of 27,022 crore rupees in FY23 to 24 to a profit after tax of 2,701 crore rupees in FY24 to 25.

The headline needs context. When tariff subsidy actually received was used instead of subsidy billed, combined profit was only 41 crore rupees, and after excluding regulatory income and earlier UDAY revenue grants, the utilities still recorded a loss of 11,270 crore rupees.

Operational measures improved as well. AT&C loss fell to 15.04%, collection efficiency reached 97%, and the adjusted ACS ARR gap narrowed to 0.06 rupee per unit. State governments also released 98.90% of subsidy billed, while tariff subsidy formed 21.32% of total revenue.

The balance sheet remains the warning, with total debt of 7.26 lakh crore rupees and accumulated losses of 6.47 lakh crore rupees. The sector reached aggregate accounting profit and came close to operating cost recovery, but not every DISCOM became profitable and the result still depends heavily on state subsidy and payment discipline.

What Could Change Under The Draft National Electricity Policy 2026

The Draft National Electricity Policy 2026 proposes single digit AT&C losses through smart metering, energy audits, geographic information based asset mapping, and consumer indexing. It also proposes better power planning, automatic monthly cost adjustments, stronger fixed cost recovery, and a stabilisation fund to soften sudden cost changes for consumers.

These are proposals, not final rules. Their impact will depend on the final policy, state regulation, execution quality, and the ability to balance affordable electricity with honest cost recovery.

What This Means For Power Sector Investors

DISCOM health affects far more than distribution businesses. Better collections and timely payments reduce receivable risk for generators, transmission companies, renewable developers, and power sector lenders.

Investors should track AT&C loss, the ACS ARR gap, billing efficiency, collection efficiency, subsidy received against subsidy billed, receivable days, payable days, debt, and cash adjusted profitability. A reported profit is less convincing if subsidy remains unpaid or regulatory income is doing most of the work.

Smart metering creates opportunities across meters, communication networks, system integration, software, cyber security, and long term operations. Strong execution and service quality matter more than a large announced order book alone.

Author Takeaway

DISCOMs are the final physical link and the central financial link in the electricity chain. They turn generated power into consumer supply, and consumer supply into the cash that keeps the rest of the sector moving.

India has made genuine progress through lower losses, better subsidy payment, tighter supplier payment rules, performance linked funding, and improved cost recovery. But one year of aggregate profit does not erase years of accumulated losses, and the next phase will depend on smart meter execution, network upgrades, cost reflective tariffs, and consumer trust.