Technical Guide

Virtual Net Metering Explained

Understand how eligible solar generation can be allocated through a virtual billing mechanism and reflected as credits on participating electricity accounts.

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Published: 9 July 2026Updated: 24 September 2026By Lumifly Solar Team

Understanding VNM

What Is Virtual Net Metering?

Virtual Net Metering (VNM) is a regulatory billing mechanism that can allow eligible electricity generation from a solar facility to be allocated as credits among participating electricity accounts at different locations, subject to the applicable regulatory and utility framework.

The term "virtual" refers to the accounting and allocation mechanism. Electricity generated by a solar project is injected into the grid rather than being physically delivered through a dedicated wire from the solar project to each participating consumer.

Simple Explanation

Traditional net metering: Solar on your premises → electricity is measured at your connection.

Virtual Net Metering: Eligible solar generation elsewhere → credits are allocated through the applicable billing mechanism.

VNM vs. Traditional Net Metering

The key difference is where the solar generation is located and how the resulting electricity benefit is accounted for.

This table is a general guide. Actual eligibility, billing and settlement treatment depend on the applicable framework, project arrangement and electricity connection.

Aspect	Traditional Net Metering	Virtual Net Metering
Solar Location	Typically on the consumer premises	Eligible solar generation facility at another location
Physical Connection	Solar system connected at the consumer premises	Generation and consumption locations are accounted for separately
Metering	Metering at the consumer premises	Generation metering plus applicable allocation and billing mechanism
Rooftop Required	Generally yes	Not necessarily
Apartment Access	Can be constrained by rooftop availability	May provide an alternative where permitted
Renter Access	Can be difficult because of installation constraints	May be possible where permitted
Maintenance	Associated with the rooftop system	Typically handled at project level
Siting	Constrained by the consumer premises	Can potentially use a suitable solar site
Scale	Often smaller distributed systems	Can support larger shared projects where permitted
Regulation	Applicable net-metering framework	Applicable VNM or related framework

VNM can involve allocation rules, settlement rates, charges, adjustment limits and timing differences. These may vary by state, DISCOM, project and consumer category.

How It Works

How VNM Works: Step by Step

Solar Generation

An eligible solar project generates electricity that is measured using the applicable metering arrangement.

Grid Injection

Generated electricity is injected into the electricity grid under the project and utility arrangement.

Allocation

Eligible generation is allocated to participating consumers according to the applicable rules and agreed allocation structure.

Bill Credit

The applicable electricity billing system reflects the resulting credit or adjustment on the consumer account.

Solar Credits

VNM Credit Calculation

The amount of credit a participating consumer receives can depend on several factors.

1. Eligible Solar Capacity

The consumer participation or allocation may be expressed in kW, subject to applicable regulatory limits and the project structure.

2. Solar Project Generation

Actual generation depends on location, solar resource, system size, technology, weather, availability, and operating conditions.

3. Allocated Generation

Eligible generation is allocated according to the applicable consumer allocation or subscription mechanism.

4. Applicable Credit or Settlement Rate

The applicable rate depends on the relevant regulation, tariff, utility rules, and project arrangement.

5. Electricity Bill Adjustment

The applicable allocation is reflected as a credit or adjustment according to the billing mechanism prescribed for the project.

India

State-Level VNM Frameworks

Virtual Net Metering and related managed-solar frameworks are not identical across India. Eligibility, metering, credit allocation, tariffs, settlement, and consumer categories can vary by state and DISCOM.

Important regulatory note

Solar regulations, VNM frameworks, eligibility conditions, tariff treatment, and DISCOM procedures can change. Always verify the current rules with the relevant State Electricity Regulatory Commission, DISCOM, and applicable project documentation before making a financial or contractual decision.

Key VNM Concepts

Sanction Load

The consumer connection capacity can affect the amount of solar participation permitted under the applicable framework.

Consumer Category

Residential, commercial, industrial, institutional, and group consumers may be treated differently depending on the applicable rules.

Billing Cycle

Credits or adjustments are accounted for according to the applicable billing cycle and regulatory mechanism.

Settlement

Banking, rollover, or settlement of unused credits depends on the applicable regulatory and utility framework.

Metering

Solar generation and consumer electricity consumption are measured through the metering arrangements prescribed for the project and utility.

Grid Availability

Generation, grid availability, outages, curtailment, and other operating conditions can affect project output and resulting allocation.

Common Misconceptions

Myth: VNM means free electricity

Fact: VNM does not mean electricity is free. Consumers can still have fixed charges, taxes, other applicable charges, and consumption that is not covered by an applicable solar credit.

Myth: VNM is available everywhere

Fact: Availability depends on the applicable state regulatory framework, DISCOM implementation, consumer category, and project structure.

Myth: VNM credits always equal the retail tariff

Fact: The applicable credit or settlement mechanism varies according to the relevant regulatory and utility framework.

Myth: VNM automatically means you own the solar panels

Fact: Participation and ownership are different concepts. The ownership structure depends on the project and contractual arrangement.

Myth: VNM provides backup electricity during power cuts

Fact: A solar-credit arrangement is not the same as backup power. Battery storage or another backup system is required for electricity supply during grid outages.

Official sources

Regulations, programme rules and financial assistance can change. Verify the current position with the responsible authority before relying on an estimate or entering an agreement.

Last regulatory review: September 2026

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Virtual Net Metering FAQs

What is Virtual Net Metering (VNM)?

Virtual Net Metering is a regulatory billing mechanism that can allow electricity generated at an eligible solar generation facility to be allocated as credits to participating electricity accounts at different locations, subject to the applicable state regulations and utility framework.

How is VNM different from regular net metering?

Traditional net metering generally connects a rooftop solar system to the electricity connection at the same premises. Virtual Net Metering separates the generation location from the participating consumer location and uses the applicable utility billing and allocation mechanism to account for eligible solar generation.

Is VNM available in all Indian states?

No. Virtual Net Metering and related group or managed solar frameworks depend on the regulations, orders, implementation rules, and DISCOM arrangements applicable in each state and consumer category. Availability should always be verified against the current rules for the relevant state and DISCOM.

Who is eligible for VNM?

Eligibility varies by state, DISCOM, consumer category, sanctioned load, project structure, and applicable regulations. Potentially eligible consumers can include residential, commercial, institutional, or group consumers depending on the applicable framework.

How are VNM credits calculated?

The allocation generally depends on factors such as the eligible solar project generation, the consumer allocation or subscribed capacity, applicable metering arrangements, and the credit mechanism prescribed by the relevant regulatory and utility framework.

What is the credit rate for VNM?

The applicable credit or settlement rate depends on the relevant state regulation, tariff structure, utility framework, and project arrangement. It should not be assumed that VNM credits always equal the consumer retail electricity tariff.

Do excess VNM credits roll over?

Banking, rollover, and settlement of excess credits depend on the applicable state regulations, utility rules, and project structure. Consumers should check the current terms applicable to their electricity connection.

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