{"$schema":"https://ejfox.com/schema/page-twin@1.json","kind":"project","url":"https://ejfox.com/projects/gem-viz","json_url":"https://ejfox.com/projects/gem-viz.json","generator":"ejfox.com/json-twin@1","data":{"cacheVersion":"2026-05-13-gear-cards","html":"

Global Energy Monitor's Ownership Tracker is a giant network: thousands of owners — governments, corporations, private equity firms, and the intermediaries between them — connected to tens of thousands of energy-related assets around the world. It's a rich dataset that had been genuinely hard to explore, so we built a set of tools to open it up. You can trace the full ownership chain behind a single project (down to the stakes held by the likes of BlackRock and EDF), see the whole energy-asset portfolio connected to one owner, and screen owners by what they actually own — coal-based steel plants, proposed mines in BRICS countries, captive gas plants for data centers.

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It's built for the digging: investigating a corporation's clean-energy claims, following investment patterns, or tracing who ultimately owns a piece of the world's energy infrastructure. The ownership chain is where a lot of the truth is.

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My favorite part was working with Stephen and Nadieh, finding new visual ways to explore ownership patterns this intricate. It started as an ownership chart — Stephen prototyped the forms in Observable, I turned them into Svelte components, and Nadieh brought really cool interactions and visual forms on top. That's how you get things like the ownership \"flowers\" that open an owner's whole portfolio at once, instead of another org chart.

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Built with Stephen Osserman and Anna Mowat at Global Energy Monitor, Third Bear Solutions on the data pipeline, and Nadieh Bremer on vis design.

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\n\"The\n
The live tool — the whole Global Energy Monitor database, 50,223 assets across 194 countries
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\n\"Owners\n
Owners of the Sines power station, traced live: the coal plant up through EDP to China Three Gorges (22.2%), BlackRock (8.4%), and the Vanguard Group — pie-nodes colored by headquarters country
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\n\"The\n
The screener — pick an asset class (coal plants, captive gas plants for data centers, proposed mines in BRICS countries) and find exactly who owns it
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\n\"Ownership\n
Ownership network for the Sines power station
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\n\"Every\n
Every energy asset in the Global Energy Monitor database, mapped
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\n\"Tracing\n
Tracing a power station up to Bank of America
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\n\"An\n
An asset's corporate ownership graph
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\n\"Drilling\n
Drilling into the owners of a binational pipeline
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","title":"Global Energy Ownership Tracker","metadata":{"title":"Global Energy Ownership Tracker","date":"2026-05-01T04:00:00.000Z","category":"Dataviz","featured":true,"tech":["D3.js","Network Analysis","Data Visualization"],"state":"deployed","ai-involvement":"ai-assisted","context":"client","url":"https://globalenergymonitor.org/projects/global-energy-ownership-tracker","tags":["dataviz","network","energy","climate"],"words":354,"images":8,"imageDetails":{"total":8,"cloudinary":6,"withDimensions":0},"links":1,"codeBlocks":0,"headers":{},"toc":[],"type":"post"}},"_links":{"self":"https://ejfox.com/projects/gem-viz.json","html":"https://ejfox.com/projects/gem-viz","index":"/projects.json"}}