BudgetGuessr rankings

The most expensive energy projects in our catalogue

The 25 most expensive of 166 built and under-construction energy projects in the BudgetGuessr catalogue, ranked by documented cost in US dollars.

Ranking

  1. 1View of Western Australia taken during ISS Expedition 26.

    Gorgon LNG development, first phase

    Australia · 2016 · Energy$54 billionEstimate
  2. 2Карта размещение нефтяных и газовых месторождении Приморско-Эмбинская НГО

    Tengiz Future Growth and pressure-management expansion

    Kazakhstan · 2025 · Energy$48.9 billion
  3. 3Coast path diversion adjacent to Sizewell C

    Sizewell C nuclear power station

    United Kingdom · 2024 · Energy$48.57 billionUnder construction
  4. 4People with banners and balloons protesting against nuclear power at Hinkley Point Nuclear Power Station in Somerset, England

    Hinkley Point C nuclear power station

    United Kingdom · 2026 · Energy$46.08 billionUnder constructionEstimate
  5. 5Kashagan Oil Field, Kazakhstan July 14, 2016 This enormous facility in the Caspian Sea was built to draw oil and gas from the Kashagan Oil Field—one of the largest contemporary oil discoveries. The facility, plagued by logistical delays and malfunctioning equipment, has yet to begin normal operations.

    Kashagan oilfield development, first phase

    Kazakhstan · Energy$46 billion
  6. 6Aerial view of Darwin, Northern Territory over Darwin Harbour.

    Ichthys LNG development

    Australia · 2018 · Energy$34 billion
  7. 7Barakah nuclear power plant under construction in 2017.

    Barakah Nuclear Energy Plant

    United Arab Emirates · 2024 · Energy$32 billion
  8. 8Natural gas pipelines and LNG terminals around the world.

    Wheatstone LNG foundation phase

    Australia · 2017 · Energy$29 billionEstimate
  9. 9El-Dabaa nuclear power plant construction

    El Dabaa Nuclear Power Plant

    Egypt · 2026 · Energy$28.75 billionUnder constructionEstimate
  10. 10Key oil and natural gas infrastructure in Azerbaijan

    Shah Deniz 2 and South Caucasus Pipeline expansion

    Azerbaijan · 2018 · Energy$28 billion
  11. 11Sabetta. LNG

    Yamal LNG development

    Russia · 2017 · Energy$26.9 billion
  12. 12Flamanville Nuclear Plant, seen from the sea. Reactor 3 (EPR) in foreground, Reactors 1 and 2 in background

    Flamanville Nuclear Power Plant

    France · 2023 · Energy$25.63 billion
  13. 13Le terminal est situé sur la rive gauche de la baie de Burrard.

    Trans Mountain Expansion Project

    Canada · 2024 · Energy$25.19 billionEstimate
  14. 14Port Prigorodnoye is Russia's first seaport built specifically to serve liquefied natural gas (LNG) ships and oil tankers.

    Sakhalin-II multi-phase development

    Russia · 2009 · Energy$22 billion
  15. 15Sabetta.Utrenny.LNG Plant

    Arctic LNG 2 development

    Russia · Energy$21.3 billion
  16. 16Nuclear power plant under construction in Akkuyu, Turkey

    Akkuyu Nuclear Power Plant

    Turkey · 2028 · Energy$20 billionUnder constructionEstimate
  17. 17World's largest crude distillation column at the Dangote refinery

    Dangote Refinery and Petrochemicals

    Nigeria · Energy$20 billion
  18. 18在甘肃省的瓜州县，有200多风发电。

    Gansu Wind Farm

    People's Republic of China · 2020 · Energy$17.39 billionUnder construction
  19. 19Natural gas pipelines and LNG terminals around the world.

    Freeport LNG initial liquefaction development

    United States · 2019 · Energy$14 billion
  20. 20Mohammed Bin Rashid Al Maktoum Solar Park

    Mohammed bin Rashid Al Maktoum Solar Park

    United Arab Emirates · Energy$13.61 billionEstimate
  21. 21View of Rooppur Nuclear Power Plant (right) and Hardinge Bridge (left) from Padma river, Ishwardi, 2023

    Rooppur Nuclear Power Plant

    Bangladesh · 2015 · Energy$12.65 billionUnder construction
  22. 22RWE headquarters in Essen, Germany

    Dogger Bank Wind Farm

    United Kingdom · 2021 · Energy$12.38 billionUnder constructionEstimate
  23. 23I think the name of this ship was Project Arabia, but I'm not sure.

    Corpus Christi LNG, first three trains

    United States · 2018 · Energy$11.75 billionEstimate
  24. 24In 2020, installation was completed on the first wind turbines installed in U.S. Federal waters. The offshore wind project has been fully operational since Fall 2020. The Coastal Virginia Offshore Wind pilot project is designed to demonstrate a grid-connected, 12-megawatt (MW) offshore wind test facility on the Outer Continental Shelf (OCS) about 27 miles off the coast of Virginia Beach. The data obtained and lessons learned from this project will be made publicly available and inform the future

    Coastal Virginia Offshore Wind

    United States · 2026 · Energy$11.7 billionUnder constructionEstimate
  25. 25The Diablo Canyon Power Plant and hills, north of Avila Beach (former Port San Luis), in San Luis Obispo County, California. Photo taken from offshore. Note that photo title in file name is incorrect (my bad).

    Diablo Canyon Power Plant

    United States · 2007 · Energy$11.56 billion

How this ranking works

This is a curated catalogue, not an exhaustive list of every megaproject. Projects are ordered by their recorded US-dollar equivalent; each detail page shows the source amount and any currency conversion. Figures are not adjusted for inflation, and construction bills, estimates, and programme costs can have different scopes. Unbuilt proposals and cancelled projects are excluded.

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