Commentary

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

Published by

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.

The shift in energy trade, as clean technology imports now make up a significant portion of energy trade value, surpasses fossil fuels in overall terms, and improves annually in efficiency terms.

This is more than just changing energy sources: the change impacts global shipping of about one third of the world merchant ship fleet that carry fossil fuels – around 12,500 tankers for oil and gas, and around 10,400 bulk carriers shipping coal.

Screenshot

Ray Wills is managing director of Future Smart Strategies, and claims to be world's least wrong futurist.

Ray Wills

Ray Wills is managing director of Future Smart Strategies, and claims to be world's least wrong futurist.

Share
Published by

Recent Posts

Energy Insiders: Grid scale sodium batteries are on their way

The battery industry is about to witness another change in chemistry and technology. Valo Energy…

16 October 2026

“Just a fantasy:” Energy minister slams Opposition gas and nuclear ideas, vows to hold the line on renewables

Energy minister says imminent closure of coal is "indisputable," and "ideology-driven" policies to scrap transmission…

16 October 2026

Supplier to Australia’s biggest battery expects to announce first sodium-ion battery project soon

The supplier to the biggest battery currently being built in Australia expects to announce its…

16 October 2026

Wind projects will need help “for a while”, says new green bank boss in shift of funding priorities

The federal government green bank has dusted off an old mandate, but has not ruled…

16 October 2026

Anti-renewables groups still spending big on Meta – and met with near silence by green energy industry

Fossil fuel interests spent $1.2 million on Meta ads in the last three months, a…

16 October 2026

Australia can still become a giga-scale solar manufacturer, says Arena, as it flags new local PV maker

Australian Renewable Energy Agency says the country can still become a major solar PV manufacturer,…

16 October 2026