Independent auditors of the world’s critical infrastructure

Renewable and hybrid energy systems are expanding rapidly across sub-Saharan Africa—but proving their real climate impact remains a challenge. This blog outlines why this verification gap matters and shows how nLine uses high-frequency voltage and frequency data to measure when solar is truly replacing diesel, enabling more credible emissions accounting and unlocking pathways to climate finance.

This post introduces the MetaFridge dataset - a high-resolution collection of voltage and frequency measurements from vaccine refrigerators deployed across public health facilities in Kenya - and illustrates its value through a case-study analysis of data from 2023.

In this post, we present findings from a nine-month study in Freetown, Sierra Leone, using GridWatch sensors deployed in 48 businesses across 12 transformers. The study reveals that MSMEs in eastern Freetown experienced nearly seven times more outage hours than those in western Freetown, with businesses experiencing an average of 300 hours of outages per month. The post highlights how improving power quality and reliability could raise utility revenues, support capacity planning, and unlock investment for economic growth.