Nexleaf StoveTrace

Target SDGs

Market Suggested Retail Price

$125.00

Target Users (Target Impact Group)

Household

Distributors / Implementing Organizations

StoveTrace is implemented by Nexleaf

Competitive Landscape

Direct competitors include SWEETSense Technologies.

Countries

India

Manufacturing/Building Method

The product is custom-designed and manufactured in India. Nexleaf can handle orders from a few devices to 10's of thousands. ^{Interview with representative}

Intellectural Property Type

Trade Secret

User Provision Model

Users may purchase directly from Nexleaf or from partner organizations.

Distributions to Date Status

As of July 2016, StoveTrace has been installed in over 700 households across more than 30 villages in India.

Design Specifications

Power characteristics:

- Power Source: 1x rechargeable and replaceable Li-Ion battery. Can be simultaneously plugged to solar panels for continuous charging.

- Power Life: 72 hours, or indefinitely if connected to solar panel AC power.

- Real Time Power Level Updates

- The device has a 750mAh battery. It takes a 5V DC input. Depending on the network quality, sampling configuration, and transmission configuration, the device can run anywhere from 2 days to 5 days without power. (More info)

Data Processing & Analysis:

- Backup data storage: Internal memory to store up to 5 years at 1-minute sampling interval.

- Data Transmission frequency: Once every 6 hours to every 24 hours.

- Cloud-Based Data Processing & Analysis Interface.

How does it work?:

- The StoveTrace system includes a mobile-phone-based temperature sensing application, a thermal sensor that connects to the mobile device and a web-based analytics dashboard. Each time the clean cookstove is fired up, the StoveTrace senses the cooking event via the temperature probe and stores and uploads cooking event data.

- The temperature data is wirelessly uploaded from the mobile phone to a central server via a wireless broadband network.

- The data collected includes the number of times a stove is used and the duration of each use, enabling remote verification of stove usage. This data can be used by carbon market investors as verification of reduction in carbon emissions.

- A web-based dashboard has been developed which shows the number of times the stove has been lit and duration of cooking.

Product Schematics

Technical Support

Nexleaf provides remote and in-person technical support in addition to warranty services for replacement components. When organizations implement projects with their device, Nexleaf provides customer service and training on the device, dashboard use, and troubleshooting. ^{Interview with representative}

Replacement Components

Replacement components such as batteries and sensors are provided to customers upon request. ^{Interview with representative}

Lifecycle

3-year warranty on the device (excluding accessories)^{Interview with representative}

The expected lifetime of the device is 5 years. The estimated lifetime of the replaceable battery is 2 years. ^{Interview with representative}

Manufacturer Specified Performance Parameters

Performance:

- Detection Limits: 0-300°C

- Max sampling rate: 1/60 Hz

Vetted Performance Status

An impact study conducted on 135 Households in the State of Odisha showed the following results: - Average Daily Stove Usage was 1.14 hours - 6.29% (of 135 households) were using stove more than 2 hours per day - 65 tons of CO2 equivalent were displaced - $388 earned

Safety

No listed hazards

Complementary Technical Systems

StoveTrace package includes:

- 1x Thermal sensor

- 1x Desktop-based processing and analysis software access

- Nexleaf can provide the device with an adapter to work directly from small solar panels or existing solar systems.

Academic Research and References

Compliance with regulations

CE marked ^{Interview with representative}

Evaluation methods

StoveTrace has been tested and validated in laboratory and in the field for accuracy in monitoring cooking time.

Other Information

Cookstove Field Study Resources

Vodafone has provided an M2M data plan for StoveTrace sensors and enables remittance of money directly to users through its mPesa solution.

Nexleaf Annual Report

Experts state that the solution requires infrastructure in order to be deployed in isolated areas. It can be complemented with multi-hop networks with technologies like ZigBee or Bluetooth.