Exploring Zero-Carbon Energy Sources

Did you know coal-fired electricity generation is being phased out? CLP’s coal-fired generation units at Castle Peak A Power Station will be gradually phased out, and the company will discuss with the Government the plan of phasing out the coal-fired generation units at Castle Peak B Power Station.

What about zero-carbon energy sources? You can learn more about them here, along with the other sources of energy we use.

Natural Gas

Natural gas is a cleaner fossil fuel.


  • It outperforms coal in emissions.
  • It has a high level of reliability.


  • It has higher fuel costs.

CLP’s Current Usage

CLP is increasing its use of natural gas to support Hong Kong’s transition to net-zero carbon emissions for electricity generation. The first new 550MW gas-fired generation unit at Black Point Power Station was commissioned in 2020. This enabled CLP to substantially increase the proportion of natural gas in its local fuel mix from below 30% in 2019 to around 50% in 2020.

The second additional gas-fired generation unit is expected to go into operation in 2023 and will further increase the proportion of natural gas in CLP’s local fuel mix.

Nuclear Energy

Nuclear energy is an important clean energy and has been providing reliable and safe power supply at reasonable price to Hong Kong for the past 20 years.


  • It produces almost no carbon or other emissions.
  • It has a high level of reliability.
  • It enables large-scale and steady baseload power.
  • Its generation costs are competitive.


  • It requires high level of safety in operation and prudent waste management.

CLP’s Current Usage

Daya Bay Nuclear Power Station produces around 15 billion kWh of electricity a year, meeting around 25% of Hong Kong’s electricity demand while cutting carbon emissions by more than 7.5 million tonnes a year. It supplies power reliably to Hong Kong at a competitive price and helps stabilise the city’s electricity tariffs.

Renewable Energy

Hong Kong’s current sources of renewable energy include solar, wind, and waste-to-energy. The cost of renewable energy will be more competitive as technology in zero-carbon energy develops.


  • It produces zero carbon emissions.
  • It is gaining popularity globally, especially in countries where relatively high generation costs can be supported.


  • It has higher generation costs.
  • Its availability is intermittent in nature and requires conventional fossil fuel generation to ensure electricity supply.
  • It depends on scarce natural resources.
  • It requires a large amount of land.

CLP’s Current Usage

CLP launched a Renewable Energy Feed-in Tariff (FiT) scheme in support of the Government’s policy of developing renewable energy by encouraging the installation of distributed renewable energy systems. The scheme has been well received since its launch.

CLP is developing a Smart Grid to connect more renewable energy generation systems, while ensuring a safe, reliable power supply that is less vulnerable to extreme weather events.

Discover More: Feed-in Tariff (Residential)

                            Feed-in Tariff (Business)

To support the Government’s policy of promoting waste-to-energy and renewable energy initiatives, CLP has also developed the WE Station at the West New Territories (WENT) Landfill. It is Hong Kong’s largest facility using landfill gas for electricity generation. The units make use of landfill gas produced at the landfill site for power generation and the electricity is then transmitted to CLP’s power grid. The first phase of WE Station comprises five landfill gas generation units and went into operation in the first quarter of 2020 with a total generation capacity of 10MW.


Hydrogen is being rapidly developed as a clean energy solution as the costs of renewable energy decline. Zero-carbon green hydrogen is expected to play an important role in emissions reduction in the coming years.


  • It produces zero carbon emissions when being burnt.
  • It can be used directly as fuel or stored long-term.
  • It can be used as fuel cells for vehicles.
  • It is a storable source of renewable energy.


  • The costs of green hydrogen are still relatively high, although they are expected to fall with improvements in technology and transportation over time.

CLP’s Current Usage

CLP signed a memorandum of understanding (MoU) with GE in 2021 to collaborate on a decarbonisation roadmap for Black Point Power Station, exploring the capability of using low-carbon fuels such as hydrogen with the latest technologies.

Powering the Future

Hong Kong Offshore Liquefied Natural Gas (LNG) Terminal

To move forward on Hong Kong’s energy transition journey, natural gas is an important bridging fuel for power generation. How do we ensure a stable supply of natural gas? CLP is constructing an offshore LNG terminal in Hong Kong waters, jointly with HK Electric. This initiative can further improve Hong Kong’s long-term natural gas supply stability by diversifying supply sources and enabling the procurement of LNG at competitive prices from the global market. The technology of Floating Storage Regasification Unit will be applied to regasify the LNG, and the natural gas will be transmitted to power stations through subsea pipelines for electricity generation. The terminal will facilitate the higher use of natural gas for power generation and play a key role in delivering the Hong Kong Government’s long-term decarbonisation strategy.

Hong Kong Offshore Wind Farm Project

Does Hong Kong use wind energy? Absolutely. With the technology and equipment of wind generation getting more mature and more cost-effective over the past decade, CLP is currently exploring the potential to develop an offshore wind farm in Hong Kong’s south-eastern waters, which would further increase the share of renewable energy in the fuel mix for Hong Kong's electricity generation and reduce dependence on fossil fuels. CLP will prepare a detailed project plan to include the offshore wind farm in the 2024-2028 Development Plan for Government approval.

Photo Montage of Offshore Wind Farm (View from Tai Leng Tung Viewing Area in Clearwater Bay Country Park)
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