BudgetGuessr rankings

The most expensive megaprojects from People's Republic of China in our catalogue

The 30 most expensive of 119 built and under-construction megaprojects in People's Republic of China in the BudgetGuessr catalogue, ranked by documented cost in US dollars.

1
Medog Hydropower Station
2025 · Dam$166.9 billionUnder constructionEstimate$166.9 billionUnder constructionEstimateCNY 1200 billion · Published project estimate
2
Sichuan–Tibet railway
2022 · Railway$47.47 billionUnder constructionEstimate$47.47 billionUnder constructionEstimateCNY 319.8 billion · Published project estimate
3
Beijing–Shanghai high-speed railway
2011 · Railway$34.19 billion$34.19 billionCNY 220.9 billion · Final project cost
4
Three Gorges Dam
2012 · Dam$33.45 billion$33.45 billionCNY 207.276 billion · Final project cost
5
Lanzhou–Xinjiang high-speed railway
2009 · Railway$21.01 billion$21.01 billionCNY 143.5 billion · Original budget
6
Hong Kong International Airport
1998 · Airport$20 billion$20 billionReported project cost
7
Hong Kong–Zhuhai–Macau Bridge
2018 · Tunnel$19.18 billion$19.18 billionCNY 126.9 billion · Reported project cost
8
Gansu Wind Farm
2020 · Energy$17.39 billionUnder construction$17.39 billionUnder constructionCNY 120 billion · Approved budget
9
Wudongde Hydropower Station
2021 · Dam$17.39 billionEstimate$17.39 billionEstimateCNY 120 billion · Published project estimate
10
Wuhan–Guangzhou high-speed railway
2009 · Railway$16.85 billion$16.85 billionCNY 115.1 billion · Final project cost
11
Xiluodu Dam
2014 · Dam$12.9 billion$12.9 billionCNY 79.234 billion · Reported project cost
12
Harbin–Dalian high-speed railway
2007 · Railway$12.13 billion$12.13 billionCNY 92.3 billion · Approved budget
13
Beijing Daxing International Airport
2019 · Airport$11.59 billion$11.59 billionCNY 80 billion · Final project cost
14
Guangzhou–Shenzhen–Hong Kong Express Rail Link
2015 · Railway$10.89 billion$10.89 billionHKD 84.42 billion · Revised budget
15
Chengdu Tianfu International Airport
2021 · Airport$10.82 billion$10.82 billionCNY 71.864 billion · Approved budget
16
Yangjiang Nuclear Power Station
2019 · Energy$10 billion$10 billionCNY 69.5 billion · Approved budget
17
Line R1 (Xiamen Metro)
2025 · Railway$9.46 billionUnder construction$9.46 billionUnder constructionCNY 67.983 billion · Approved budget
18
Danyang–Kunshan Grand Bridge
2011 · Bridge$8.5 billion$8.5 billionReported project cost
19
Xiamen Xiang'an International Airport
2026 · Airport$8.32 billionUnder construction$8.32 billionUnder constructionCNY 53.685 billion · Approved budget
20
Xiong'an–Xinzhou high-speed railway
2027 · Railway$8.29 billionUnder construction$8.29 billionUnder constructionCNY 57.234 billion · Approved budget
21
Xiamen Metro
2017 · Railway$7.98 billion$7.98 billionCNY 50.37 billion · Approved budget
22
Sanmen Nuclear Power Station
2018 · Energy$7.56 billion$7.56 billionCNY 50 billion · Final project cost
23
Dalian Jinzhouwan International Airport
2024 · Airport$7.08 billionUnder constructionEstimate$7.08 billionUnder constructionEstimateCNY 50.931 billion · Published project estimate
24
Wenzhou rail transit
2019 · Railway$6.85 billionUnder construction$6.85 billionUnder constructionCNY 43.23 billion · Approved budget
25
Yangshan Port
2017 · Port$6.51 billion$6.51 billionCNY 44 billion · Reported project cost
26
Shenzhen-Zhongshan Link
2024 · Tunnel$6.21 billionEstimate$6.21 billionEstimateCNY 44.691 billion · Published project estimate
27
Shanghai — Airport Contact Line
2024 · Railway$6.1 billionUnder constructionEstimate$6.1 billionUnder constructionEstimateCNY 43.911 billion · Published project estimate
28
Haiyang Nuclear Power Plant
2018 · Energy$6.05 billionEstimate$6.05 billionEstimateCNY 40 billion · Published project estimate
29
Guangzhou Metro Line 12
2017 · Railway$5.2 billionUnder construction$5.2 billionUnder constructionCNY 35.12 billion · Approved budget
30
Ürümqi Metro
2012 · Railway$4.95 billion$4.95 billionCNY 31.24 billion · Approved budget

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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