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CASE STUDY · ENERGY ACCESS

PayGo System

Pay-as-you-go access to essential hardware, unlocked through small mobile-money payments instead of a large upfront cost.

PayGo controller board
01 / Overview
SECTOR
Energy access
OUR ROLE
Hardware · Firmware · App
PAYMENTS
AzamPay integration
STATUS
Deployed in market

A client selling essential hardware was hitting a ceiling: the upfront price put their product out of reach for most of their target market.

We designed custom IoT hardware that unlocks the product incrementally as customers pay, paired with a mobile app for payment management and precise on-device energy metering.

The result opened an entirely new customer base that previously could not afford the initial investment, and gave the client live visibility into usage and revenue for the first time.

02 / How we built it

From brief to field.

01
Needs assessment

Worked with the client to understand the product, the target market, and the affordability barrier blocking growth.

02
IoT hardware design

Custom board with precise energy measurement, usage tracking, and an MQTT link back to the platform.

03
Firmware development

Wrote the firmware with optimised MCU flash memory management and hardened payment-state security.

04
Mobile application

Built a clean app for incremental payments, scheduling, usage history, and notifications.

03 / Key components

What’s inside.

PayGo IoT device
IoT device

Custom hardware handling real-time payment state and usage tracking, with secure connectivity and low power draw for long unattended operation.

  • Real-time monitoring
  • Secure payment state
  • Low power consumption
Energy metering circuit
Energy metering

The board measures power precisely and efficiently, sampling readings on the MCU and monitoring the full set of electrical parameters.

  • Active power
  • Current & voltage
  • Power factor
MOBILE APP
Mobile app

An intuitive app to manage payments and monitor usage, with a payment gateway wired to AzamPay and usage analytics built in.

  • AzamPay gateway
  • Usage analytics
  • Payment scheduling
04 / Results

Making the product affordable unlocked a market the client could not reach before.

+50%
GROWTH IN CUSTOMER BASE
Live
FINANCE & REVENUE TRACKING
Field
USAGE DATA & ANALYTICS
Watch demo
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