Nexleaf Data in the Journal Vaccine

A research paper co-authored by Nexleaf’s ColdTrace Program Director Shahrzad Yavari is featured in a special edition of the journal Vaccine, “Building Next Generation Immunization Supply Chains.”

With partners PATH and VillageReach, Nexleaf conducted small-scale studies to evaluate the performance of vaccine cold chain equipment (CCE) in Uganda and Mozambique and to unearth underlying causes for equipment failures. By monitoring eighty-six failing refrigerators and freezers in selected locations, the project teams acquired revealing, actionable information that led to immediate and long-term vaccination systems improvements. This is an exciting example of how collaborative efforts to systematically collect and communicate data can improve the efficiency and reach of immunization programs in low- and middle-income countries.

Read the full paper.

Learn more about our ColdTrace program.

Gavi Announces New Tool

Gavi has announced a partnership with Nexleaf Analytics to create a planning tool to help countries make evidence-based decisions on the purchase and maintenance of vaccine refrigerators. The Gavi-owned planning tool will be available to all Gavi countries as they make their vaccination supply chain equipment decisions. Nexleaf will contribute software engineering and analytics know-how, as well as lessons learned from our years of experience working directly with Ministries of Health. Funding to implement in initial countries will come from the Gavi Matching Fund provided by the Bill and Melinda Gates Foundation. This project also receives support from, a Nexleaf funder since January 2015, for tool development and engineering.

The Financial Times Features Nexleaf’s StoveTrace Program

An article and video featured in the Financial Times address Nexleaf’s StoveTrace program in Notarpalli, a rural village in India. Following an eight-month trial, in which Nexleaf provided villagers with modern, clean cookstoves with attached data-monitoring devices, Notarpalli has experienced full adoption of clean cookstoves.

By analyzing data collected from the monitoring devices, Nexleaf was able to identify problems associated with the stoves and provide impactful solutions to ensure integration of the stoves into daily life.

Read the full article to learn how Nexleaf’s StoveTrace program is affecting rural communities.

Click here to learn more about StoveTrace.

Nature Climate Change Highlights the Power of Nexleaf Data

Rural Women in India Gain Access to Climate Financing with Nexleaf’s StoveTrace Technology

An article published in Nature Climate Change this week demonstrates how data from Nexleaf’s StoveTrace platform is helping break down barriers to achieving safe, clean, modern energy access for all.

A view-only copy of the full text of the article can be accessed here. The abstract is available here.

The method described in the article, which is called Sensor-Enabled Climate Financing (SCF), brings together cutting-edge climate science, rugged StoveTrace wireless sensors, and market-based mechanisms to make clean cooking affordable for the poorest 3 billion. With this method, a rural woman receives a small loan to procure a clean cookstove. StoveTrace sensors then collect real-time data on her cookstove usage, and the woman receives usage-based payments from a climate fund for the carbon emissions she mitigates by using the clean cookstove. The SCF method enables even extremely low-income women to afford clean cookstoves.

Nexleaf gathered the clean cookstove usage data featured in the Nature Climate Change article from very low-resource areas of Odisha, India, where there is little modern infrastructure. “We’ve been working on this problem since we started,” says Martin Lukac, CTO of Nexleaf. “We struggled to build a robust sensor. Our early probes burned off. But we knew it was important to get data flowing in these remote areas, to connect rural women to climate financing, and also to make sure that the clean cookstoves continue to work for the women over time.”

As a non-profit organization grounded in field engagement, Nexleaf strives to create low-cost technology and data analytics tools that address the needs of people living and working on the front lines of global public health and climate change. “Connecting women to climate financing gives them a way to afford to pay for their clean cookstove,” says Tara Ramanathan, StoveTrace Program Director at Nexleaf and primary author of the Nature Climate Change article.  “They become actively engaged in the cookstove value chain, improve their quality of life, and protect the planet.”

SCF was developed by Project Surya, an international collaboration among the University of California at San Diego, Nexleaf Analytics, and The Energy and Resources Institute of Delhi. Project Surya partners tested the SCF model in 4,038 Indian households with funding from Leslie & John “Mac” McQuown. Nexleaf’s first StoveTrace funder was Qualcomm Wireless Reach, which continues to support the program. StoveTrace has also received support from Beneventures Foundation, Mulago, The World Bank, Ellen Lehman & Charles Kennel, Joy & Ed Frieman, and Henning Rodhe.

Learn more about Nexleaf’s StoveTrace program here.

Nexleaf Data Enables Financial Inclusion for Rural Indian Women through Vodafone mPesa in Odisha


Nexleaf’s StoveTrace platform, in collaboration with Vodafone M-Pesa, has enabled 22 women in rural India to begin receiving climate credits: payments made directly to women’s mobile phones every month in exchange for their climate stewardship. The purpose of this new program is to allow rural women to afford and to use the cleanest cooking technologies. Through introductory sessions, women are informed that the more they use clean cookstoves, the more money they will receive via payment to their mobile phones.

The StoveTrace platform allows for data calculation of household-level stove usage every month to measure exactly how much each woman should be paid for her clean cookstove use. This program was launched in Notarpalli village in Nayagarh District in Odisha, India. Nexleaf aims to get 1,000 women enrolled in the M-Pesa program by next year.

Nexleaf is partnering with several local NGOs to make this program possible: the Saunta Gaunta Foundation and Sambhav in Odisha, India, Hand in Hand in Tamil Nadu, India and the Renewable Energy Programme (RUWES) in Nigeria. Nexleaf Analytics wishes to extend a special thank you to our long-standing supporters: Qualcomm Wireless Reach, Leslie and Mac McQuown, and Beneventures Foundation for making this innovative program possible.

Click here to learn more about StoveTrace.

Nexleaf’s ColdTrace Is a Gavi INFUSE Pacesetter Technology

infuse-iconNexleaf’s ColdTrace innovation has been selected as one of seven Gavi INFUSE Pacesetters that will work with Gavi in its mission to increase access to immunization around the world. With its INFUSE initiative, Gavi seeks to identify the most promising technologies that improve vaccine access and efficacy in low-income countries, with particular emphasis on data-driven innovations. 60 companies and entrepreneurs applied to the program after it was announced at this year’s World Economic Forum; 18 projects were selected for a final round of pitching to evaluators from both private companies and international organizations like the World Health Organization (WHO) and UNICEF. The panel chose seven Pacesetters that will work with Gavi on scaling up their work and serving more countries.

Learn more about INFUSE Pacesetters from The Verge, and read more about ColdTrace here.

ColdTrace 5 Now Has WHO PQS Approval

ct_5ColdTrace 5 received Performance, Quality and Safety certification on July 20th, 2016 from the World Health Organization (WHO) and is now listed in the WHO’s PQS Catalogue as number E006/039. This certification is a significant step forward, as it gives national Ministries of Health an easier path to procuring and utilizing our ColdTrace technology to protect vital vaccines.

ColdTrace 5 is a wireless remote temperature monitoring (RTM) solution for refrigerators that are used to store vaccines and other temperature-sensitive products. The GSM-based ColdTrace 5 system goes far beyond temperature alerts and alarms. ColdTrace 5 also collects critical data and provides customizable analytics to empower health workers, inform country-wide maintenance strategy, and improve overall cold chain performance, resulting in a measurably increased ROI for immunization programs.

Nexleaf contributes chapter to Broken Pumps and Promises


Based on work developed in partnership with Project Surya, Nexleaf published a chapter in the book Broken Pumps and Promises available at Co-authored by Tara Ramanathan, Nithya Ramanathan, and Erin Ross, Chapter 11 “Innovations in Payments for Health Benefits of Improved Cookstoves” discusses how results-based financing for improved cookstove usage financially empowers women in rural communities.

Cisco ITU report features ColdTrace

A cisco-itunew report from ITU and Cisco identifies the Internet of Things (IoT) as a major global development opportunity that has the potential to improve the lives of millions and dramatically accelerate progress towards the UN Sustainable Development Goals.

Nexleaf’s ColdTrace vaccine monitoring system is featured as an innovative application of IoT to monitor and strengthen the “cold chain” delivery supply chain for vaccines in developing countries.

Read more below:

ITU Press Release

Full Report (PDF)


StoveTrace Wins M2M Aegis Graham Bell Award

aegis-graham-bellNexleaf is honored to have received the Aegis Graham Bell award for the StoveTrace M2M platform, jointly with Vodafone India and TERI – The Energy and Resources Institute, from Minister of State Jitendra Singh. It was also a very special honor to have our partner, Qualcomm Wireless Reach, receive the award on Nexleaf’s behalf.

StoveTrace uses Vodafone’s customized M2M platform to remotely upload data to our cloud servers, making information on improved cookstove use available in near real-time. This innovation helps stove distributors, stove manufacturers, and other stakeholders keep track of how often improved cookstoves are being used by the rural households that receive them. Furthermore, this innovation enables rural women to receive compensation for their reductions of emissions harmful to the climate. Learn more about StoveTrace here.