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Case Study: Mobile Remote Monitoring & Maintenance App for Off-Grid Solar | Envision360 × Netline Group
Case study

Mobile remote monitoring & maintenance for off-grid solar

Client: Netline Group (Net-Line Pvt. Ltd.), Pakistan. Mobile-first visibility, automated alerts, and structured partner maintenance to scale beyond 200+ sites.

Client at a glance

  • Type: turnkey power & solar solutions provider
  • Footprint: rural & semi-urban deployments across Pakistan
  • Focus: off-grid/hybrid for telecom towers, mini-grids, critical infrastructure

Goal

Real-time site health, faster fault handling, and partner-run maintenance—without overloading central ops.

Challenge

Growing off-grid solar & hybrid deployments exposed gaps in visibility and coordination.

  • Limited real-time visibility: inverter/BMS status and connectivity were delayed or fragmented.
  • Slow fault detection: faults surfaced after partner reports, extending downtime.
  • Inefficient maintenance: email/spreadsheet/phone workflows made coordination messy.
  • Support overload: central ops fielded repetitive status calls.
  • Scaling risk: manual processes wouldn’t sustain 200+ sites.
Mobile app ticket view and critical site alert workflow
Our solution

Telemetry in, alerts out, field fixes synced.

Telemetry & ingestion

  • MQTT, Modbus, REST adapters for inverter/BMS data
  • Offline buffering for low-signal regions

Ops dashboard

  • Live map with status and drill-downs
  • Uptime & alert frequency KPIs

Alert engine

  • Thresholds for voltage/comm failures
  • Push, email, SMS; bi-directional ack

Partner mobile app

  • iOS/Android, offline-first
  • Job cards, photos, status sync

Analytics & proactive

  • Trend issues & recommend maintenance
  • Noise suppression & tuning

RBAC & audit

  • Ops, regional, tech, client views
  • Full audit; ERP/CRM hand-offs
Pilot

Scope & challenges.

  • 50 sites across multiple vendors & firmwares
  • Telemetry mismatches: adapters normalized 15–20% inconsistent streams
  • Connectivity gaps: offline caching + delayed sync
  • Fast onboarding: short training + in-app guidance
Reliability

Alert optimization & data handling.

  • Noise reduction: threshold tuning & suppression
  • Encryption: TLS in transit; AES-256 at rest
  • Archiving: cold storage after 90 days
Technology

Stack & architecture.

Frontend

  • Flutter (iOS/Android)
  • FCM push notifications
  • Offline caching & sync

Backend & APIs

  • Node.js microservices
  • Kafka events; Redis queues/cache

Telemetry

  • MQTT broker; Modbus RTU/TCP
  • TLS for device data

Web dashboard

  • React SPA + WebSockets

Cloud

  • AWS hosting
  • Prometheus & Elasticsearch
  • CI/CD: GitHub Actions + Docker

Security

  • JWT auth; RBAC
  • Secure API gateway
Approach

No-stallover rollout.

  • Discover — site inventory, device protocols, roles, SLA targets
  • Design — schemas, alert rules, workflows, RBAC
  • Build — agents/adapters, broker, dashboards, mobile app
  • Integrate — ERP/CRM, notifications, analytics
  • Pilot — 50 sites; measure MTTA/MTTR, noise, adoption
  • Scale — hundreds of sites with playbooks
Impact

After six months.

  • Avg downtime per fault: ~16h → ~9h (↓44%)
  • Reactive support calls: 120+/mo → ~80/mo (↓33%)
  • Fault acknowledgment: ~3h → <1h (↓67%)
  • Proactive maintenance: ~5% → ~25%
  • Scheduling conflicts: frequent → minimal
  • Ops overhead: high → lower (capacity ↑)

Mobile-first visibility + partner workflows enabled confident scale without overloading support.

Outcomes: downtime reduced, fewer calls, faster acks, more proactive jobs
Work with us

Talk to us.

Need mobile-first visibility and coordinated maintenance for distributed energy sites? We’ll help you ship a scalable platform—without stalling day-to-day operations.

Schedule a call or contact us to plan your rollout.