We built a spot billing solution that connects meter reading, SAP-ISU billing and WhatsApp payments for a leading city gas distributor in India. Bills now go out faster and cleaner, with billing cycles 75% shorter and meter reading and billing errors down by 90%.
Our client is a prominent city gas distribution company in India. Billing depended on manual meter readings and SAP-ISU processing, which made every cycle slow and easy to get wrong. They wanted one connectedAutomate billing and invoicing to remove manual errors and cut processing time.
Every bill began with a manually captured meter reading, which meant typos, missed entries and waiting. The handoff to SAP-ISU billing was far from smooth, so data management and processing kept slowing the team down instead of keeping bills moving.
Invoices went out late and sometimes wrong. Without automation, staff had to step in at every stage, and each manual touchpoint added inaccuracies and stretched processing time for customers waiting on a bill they could trust.
Meter reading and billing lived in separate worlds. Data did not flow cleanly between them, so teams stitched the process together by hand. That gap created disjointed workflows and manual fixes that held back efficiency across the whole billing process.
Reading meters manually tied up people and resources in routine work. It inflated overheads and, just as importantly, limited how far the business could scale. Heavy reliance on manual labour left little room to grow.
The existing systems and processes were not built for a fast-growing customer base. Every increase in demand added pressure, making it hard to expand operations efficiently or act on new business opportunities when they appeared.
Printing and WhatsApp sending now run as separate operations, so one never holds up the other. Customers receive invoices sooner, the system stays responsive under load, and fewer errors slip through at the delivery stage.
PostgreSQL acts as the message bus between system components, so messages reach the right place without paying for a third-party service. The migration from Oracle to PostgreSQL also moves the platform from on-premises to the cloud, ready for growth.
Background services built on .NET 8 with the Quartz library handle large data volumes and concurrent tasks. Optimized APIs absorb heavy traffic, so bills are generated quickly and the platform keeps up as the customer base grows.
Customers can generate their own bills through the Self-Billing API and pay on the spot with UPI inside WhatsApp. That means less manual handling for the utility and a quicker, more convenient experience for the people being billed.
Robust device authentication keeps meter data secure from the field to the system, while integration with SAP carries it straight into billing. Fewer handoffs mean a more reliable process from reading to invoice.
Business growth reports give leadership a clear view of billing performance and system efficiency. Teams can spot trends, track how the platform is running and plan the next step using data instead of guesswork.
Spot billing links meter reading, SAP and invoicing so bills go out faster and more securely.
OCR-based capture takes manual mistakes out of the journey from reading to invoice.
60% higher satisfaction through quicker billing and payments.
40% drop in operational costs as waste was removed.
Savings on admin staff and stationery, with better cash flow.
Meter reading images help eliminate fraud.