One ship loaded with solar PV is now worth more to the grid than 120 coal-carriers

Sat, 17 Jan 2026 11:49:34 +1100

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
<https://reneweconomy.com.au/one-ship-loaded-with-solar-pv-is-now-worth-more-to-the-grid-than-120-coal-carriers/>

"The International Energy Agency have light to a fascinating meme in its
Energy Technology Perspectives 2024 publication, which highlighted how “one
ship load of solar PV is worth more to the grid than 100 ships of coal”.

The basis of the IEA estimate was 2023 data, and since then, technological
improvements have increased the effectiveness of clean energy shiploads by up
to 15 per cent across different technologies.

However, the efficiency of a ship full of coal or gas remains static.

A single shipment of solar technology provides a vastly greater, cleaner, and
more sustained energy return compared to the massive volume of fossil fuel
consumed for power.

We calculate that a single ship load of solar PV – which can ultimately deliver
170 terawatt hours of PV once installed, is now worth 120 coal carries, or 57
LNG tankers.

We’ve updated the meme to also include the impact of heat pumps and electric
vehicles."

Cheers,
       *** Xanni ***
--
mailto:xanni@xanadu.net               Andrew Pam
http://xanadu.com.au/                 Chief Scientist, Xanadu
https://glasswings.com.au/            Partner, Glass Wings
https://sericyb.com.au/               Manager, Serious Cybernetics

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