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Case Study: From Manual Billing to Zero Missed Payments in a 40-Room PG

Learn how a 40-room PG eliminated disputes, manual calculations, and missed payments by switching to smart prepaid metering.

Qube · · 5 min read

Smart metering case study

Running a paying guest (PG) accommodation is a balancing act: maintain occupancy, keep tenants happy, and stay profitable. Electricity billing often breaks that balance—especially when owners rely on shared meters, manual spreadsheets, and patient follow-ups. This case study shows how a 40-room PG in Bengaluru went from constant billing disputes to zero missed payments within one month by adopting Qube’s smart prepaid metering stack. ⚡


1. Before Qube: Manual, Reactive, Stressful

Shared Metering & Excel Math

  • One main meter supplied an entire floor; the owner split costs evenly.
  • AC rooms, induction users, and minimal users paid the same—inevitably unfair.
  • Monthly bills, photos of meters, and ad-hoc spreadsheets formed the workflow.
  • Tenants disputed amounts every cycle (“Why is my share so high?”).

Payment Collection Headaches

  • The owner sent manual reminders on WhatsApp and tracked UPI transfers in a notebook.
  • Some tenants paid late; some left without settling dues.
  • Cash flow fluctuated, making it tough to plan maintenance or diesel purchases.

Admin Workload: 8–10 Hours/Month

  • Reading meters, updating Excel, cross-verifying screenshots, reconciling payments—every month.
  • Even after putting in the work, data stayed inaccurate and trust stayed low.

The owner realised manual billing doesn’t scale beyond 10–15 rooms. It was time to modernise.


2. The Upgrade: Smart Prepaid Metering Everywhere

Deployment Snapshot

  • Installed 40 prepaid smart meters—one per room (and separate meters for kitchen/laundry).
  • Configured differential tariffs for grid vs. DG supply (₹9 vs. ₹20/unit) using Qube.
  • Generated QR codes and mobile recharge links for every tenant.
  • Enabled low-balance alerts and automated receipts.

Tenant Experience

  • Residents recharge via QR/UPI/cardless payments anytime.
  • Dashboard shows real-time balance, consumption, and source (grid or DG).
  • No more waiting for invoices—usage deducts instantly, like prepaid mobile.

Owner Experience

  • Billing happens automatically; manual calculations disappeared overnight.
  • Dashboards show recovery rate, top-ups, and building-level load.
  • Ledger data exports directly into accounting software.

3. Results After 30 Days 🚀

MetricBeforeAfter (with Qube)
Payment recovery86%100% prepaid
Billing disputes6–8 per month0
Admin workload8–10 hrs/month<1 hr (monitoring only)
Cash flowUnpredictableBalanced weekly recharges
Tenant satisfaction3.2/54.7/5

Other wins:

  • Diesel costs accounted for correctly using differential tariffs.
  • Tenants recharged proactively thanks to alerts—outages caused by empty balances dropped 90%.
  • The owner felt confident enough to add a second property to the Qube dashboard.

4. How the Transformation Happened (Timeline)

Week 1 – Audit & Planning

  • Mapped distribution boards, room loads, and DG wiring.
  • Identified tariff structure (grid ₹9, DG ₹20, inverter ₹0).
  • Communicated upcoming changes to tenants with FAQs.

Week 2 – Meter Installation & Configuration

  • Each room meter installed in ~15 minutes using the 10-minute workflow.
  • Qube portal configured with prepaid rules and low-balance alerts.
  • QR codes printed for rooms; mobile app access shared.

Week 3 – Pilot & Training

  • Ran a 7-day pilot on one floor; verified accuracy and top-up process.
  • Hosted a “Recharge 101” WhatsApp webinar for tenants.
  • Parent login links shared for students living away from home.

Week 4 – Full Rollout & Monitoring

  • All rooms went live; manual billing stopped completely.
  • Owner monitored dashboards daily; Qube success team provided concierge support.
  • Weekly reports summarised recovery, DG usage, and top rechargers.

5. Tenant & Owner Feedback

Tenant quote:

“I love seeing my balance in real time. I recharge ₹200 every Friday—it’s as easy as topping up my phone.”

Owner quote:

“I’ve reclaimed 10+ hours every month. No more meter photos, no more chasing payments. Everything just works.”


6. Lessons Learned

  1. Manual billing doesn’t scale; smart metering is cheaper in the long run.
  2. Prepaid + QR recharges deliver predictable cash flow.
  3. Differential tariffs (grid vs. DG) are essential to avoid hidden losses.
  4. Transparency and automation improve tenant trust and retention.
  5. Data from smart meters fuels energy optimisation (ties into analytics playbook).

7. What’s Next for This PG?

  • Deploying Qube at a newly opened 30-room annex.
  • Using analytics to identify high-consumption rooms and coach tenants.
  • Integrating with building maintenance workflows to spot appliance issues early.
  • Rolling out sustainability challenges (“Green Room of the Month”) to cut energy consumption further.

Conclusion

This 40-room PG’s journey proves that smart prepaid metering delivers immediate, measurable impact:

  • Zero disputes—every tenant sees their own usage and charges.
  • Zero missed payments—prepaid recharges remove collection hassles.
  • Zero manual workload—billing, alerts, and reporting take care of themselves.

Frequently asked questions

What problem did the PG face before automation?

Manual billing, disputes over shared consumption, and delayed payments.

What changed after installing prepaid meters?

Billing became automatic, tenants recharged independently, and payment recovery reached 100%.

How long did it take to see results?

The PG saw measurable improvements within the first month.

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