Solar Asset Mapper (TZ-SAM) is a collaboration between TransitionZero and Global Energy Monitor, it contains over 19,100 km² of solar farms, across 183 countries, with a total estimated capacity of 711 GW, providing three times the coverage of smaller facilities than incumbents.

Through earth observation data and machine learning, we can identify small- and medium-sized solar assets at scale, while also estimating generation capacity and the date of construction.

The rapid and decentralised growth of solar makes forecasting difficult. TZ-SAM will support more effective forecasting and planning by filling gaps in traditional methods of solar asset reporting.

We plan to regularly update TZ-SAM, and will integrate it with Model Builder, our world-first, no-code user interface for modelling both grid capacity expansion and unit dispatch.