Sustainability Report 2019 Highlights - 港铁 Installed 189 solar panels at our Hung Hom office building with the system capacity of 58.6 kW which can last for around 15 years up to 2033. Resource Conservation. Biodiversity. Continued a large-scale chiller replacement project with the replacement of 32 chillers in 2019 resulting in savings of 7.2GWh. https://www.mtr.com.hk/sustainability/assets/pdf/en/2019/Pamphlet.pdf - 2023-07-06