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Digital meter reading for accurate billing across a 2M+ customer gas network

The IGL Meter Reading platform enables customers and field teams to submit meter readings with photographic proof, access consumption history and drive billing accuracy across Indraprastha Gas Limited's full PNG network.

At a glance

The engagement, in six facts.

A scannable summary for buyers checking facts before reading the full page.

Client
Indraprastha Gas Limited (IGL)
Sector
Oil, Gas and Energy / City Gas Distribution
Platform
IGL Meter Reading — Digital Meter Submission and Consumption Analytics
Scope
Digital meter reading submission with photographic proof, reading history, consumption tracking, usage analytics and billing system integration for PNG customers and field teams
Scale
Serving IGL's 2M+ PNG customer base across Delhi and NCR
Engagement
Design and development by Triazine Software. Part of the multi-year IGL partnership.

About the client

Indraprastha Gas Limited

Indraprastha Gas Limited supplies piped natural gas to over two million customers across Delhi and NCR. Accurate meter reading is fundamental to the billing process for every PNG customer. At the scale IGL operates, the volume of meter reads required each billing cycle is significant, with readings coming from both customer self-service and field team visits across a geographically distributed network. Ensuring those readings are accurate, photo-verified and flowing correctly into billing systems is a direct revenue and compliance requirement.

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PNG customers across Delhi & NCR
Every cycleMeter reads feed billing
Two channelsSelf-service & field teams
Photo-verifiedProof on every reading
Revenue-criticalAccuracy & compliance

The business challenge

Meter reading at utility scale is a data quality and logistics problem.

Readings captured incorrectly or late create billing disputes, reconciliation backlogs and customer complaints. Physical meter visits by field teams are resource-intensive and not always practical across a customer base of two million. Customer self-service for meter submission only works if the process is simple enough to complete reliably on a mobile phone and the data integrates cleanly with downstream billing.

The solution needed to serve both channels simultaneously. Field teams needed a mobile-first application with offline capability for areas with poor connectivity, photo evidence capture and direct synchronisation with billing. Customers needed a self-service flow simple enough to complete in under a minute, with instant confirmation and consumption visibility that builds confidence in the accuracy of their bill.

What Triazine Software built

One platform. Two channels. Every reading verified.

Triazine Software built the IGL Meter Reading platform across web and mobile, serving both the customer self-service channel and the field team operations channel from the same underlying system.

Photo-verified self-service submission

Customers submit meter readings through the mobile application by entering the current reading and attaching a photograph of the meter as proof. The submission triggers instant confirmation to the customer and feeds directly into IGL's billing workflow.

  • Photographic proof attached to every reading at the point of capture
  • Instant confirmation the moment a submission is accepted
  • Direct feed into IGL's billing workflow — no re-keying
IGL meter reading consumption analytics dashboard

Consumption history for customers, routes for field teams

The platform maintains a complete reading history for each customer, with consumption trend analytics and usage insight dashboards that give customers visibility into their gas usage patterns over time. Field teams use the same application for their meter reading routes, with route management, offline data capture, photo evidence submission and real-time synchronisation with the central billing system built into the field workflow.

  • Route management for field meter reading operations
  • Offline data capture for areas with poor connectivity
  • Photo evidence submission built into the field workflow
  • Real-time synchronisation with the central billing system
IGL meter reading photo submission app

Network-level visibility for IGL operations

The web platform gives IGL operational teams visibility into reading submission status across the customer base, outstanding reads, reconciliation flags and billing cycle performance. Consumption analytics at the network level support operational planning and capacity management across IGL's distribution infrastructure.

  • Submission status across the full customer base
  • Outstanding reads & reconciliation flags surfaced for action
  • Network-level analytics for planning and capacity management
Billing cycle performance · live
Digital submissionshigh volume
Photo verification attachedevery reading
Field sync to billingreal-time
0
customers served
Every cycle
reads reconciled with proof

Business outcomes

Verified readings. Accurate bills. A clear audit trail.

Verified outcomes only — observable results where specific numbers are not published.

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Customer Network
IGL's full PNG customer base across Delhi and NCR served through the platform.
Photo-Verified
Submissions
Photographic proof attached to every reading, from customers and field teams alike.
Consumption
Analytics
Reading history and usage trends visible to customers; network analytics for IGL teams.
Billing
Integration
Real-time synchronisation with IGL's central billing system and reconciliation workflows.

For customers and billing accuracy

Meter reading submissions from IGL's PNG customer base now flow through a digital channel with photographic proof attached to every reading. Billing accuracy has improved through verified digital submissions replacing estimates and manual entries. Customers access their consumption history and usage trends through the same application, improving billing transparency and reducing dispute-related contacts to IGL's customer service teams.

For field operations and reconciliation

Field teams submit readings digitally with photo evidence from the point of capture, with data synchronising to the central billing system in real time. The reconciliation effort on mismatched or estimated reads has reduced as photo-backed digital submissions create a clear audit trail for every billing cycle.

Technology landscape

Built for high-volume concurrent usage.

The IGL Meter Reading platform was built to handle high-volume concurrent usage across a 2M+ customer base, with offline capability for field operations and real-time billing system integration.

IGL Meter ReadingPlatform core
FlutterMobile apps
AngularWeb platform
PythonServices
DjangoBackend
AWSCloud infra
MySQLData layer
Mobile
iOS and Android for customer self-service and field team meter reading
Offline Capability
Field application functions offline with automatic sync on connectivity restoration
Photo capture
In-app camera with photo attachment and verification for meter reading proof
Billing integration
Real-time synchronisation with IGL billing system and reconciliation workflows
Analytics
Consumption trend dashboards for customers and operational analytics for IGL teams

Enterprise security & compliance

Built for secure, compliant energy operations.

Oil and gas and energy utility platforms manage operationally sensitive data across field operations, safety records, financial transactions, customer information and regulatory workflows. Every system that handles this data carries an obligation to protect it throughout its lifecycle and to maintain the audit-ready records that regulators and enterprise governance teams require.

For Indraprastha Gas Limited, Triazine Software designed security and compliance as part of the platform architecture from the start, not configured after delivery. The solution follows industry best practices for operational data protection while supporting regulatory requirements across different deployment geographies.

Role-Based Access Control

Ensures field teams, supervisors, finance teams and administrators only access data and workflows relevant to their role.

Audit Trails

Maintains complete activity logs across all platform transactions to support regulatory audits, compliance reviews and governance requirements.

Data Encryption

Protects operational and financial data during transmission and storage using industry-standard encryption.

Secure Authentication

Strong user authentication safeguards access to operational systems and sensitive workflows.

Workflow Governance

Structured multi-level approval workflows with complete traceability across safety, financial and operational processes.

Scalable Security Architecture

Designed to support enterprise deployments across multiple sites, facilities and geographies.

Compliance-ready foundation

The platform architecture is designed to support leading operational data security and regulatory compliance standards, depending on deployment geography and customer requirements.

IOGPOperational safety & data governance

IOGP standards for oil and gas operational safety and data governance in international deployments.

PNGRBCGD regulatory requirements

PNGRB regulatory requirements for CGD operators in the Indian market.

ISO 9001:2015Quality management

ISO 9001:2015 quality management standards across all delivery processes.

CMMI L3Enterprise delivery practices

Enterprise delivery practices aligned with CMMI Level 3 to ensure disciplined development, quality assurance and governance.

Rather than treating compliance as a checklist, Triazine incorporated data integrity, audit trail and governance requirements into the IGL Meter Reading platform from the start. Photo-backed submissions create a tamper-evident audit trail for every meter reading, supporting both billing accuracy and regulatory compliance under PNGRB requirements for CGD operators.

Beyond go-live

A platform in a partnership, not a project with an end date.

The IGL Meter Reading platform is part of Triazine Software's multi-year partnership with Indraprastha Gas Limited. It operates alongside IGL Connect and the Safety Work Permit platform as part of a broader digital operations infrastructure that Triazine Software continues to support and evolve.

DiscoveryUnderstanding two channels and utility-scale constraints
DevelopmentWeb and mobile built on one underlying system
DeploymentLive across IGL's PNG customer network
SupportOperating alongside IGL Connect & Safety Work Permit
Continuous innovationPlatform evolved as part of the multi-year partnership

Work with Triazine Software

Let's build your next enterprise platform.

From utility-scale meter reading to safety and customer engagement, Triazine designs and delivers digital operations infrastructure that enterprises run their business on — and keeps evolving it long after go-live.