There are no regulations requiring a certain percentage of energy consumption to come from renewable sources. However, to promote the use of renewable energy, in 2009, the Hong Kong government began to require (i) all new school and educational buildings without air-conditioning to aim to have at least 0.5% of their electrical consumption be provided by renewable energy and (ii) all other new government buildings to incorporate renewable energy technologies as far as reasonably practicable. This requirement is part of a target-based green performance framework for new and existing government buildings. With the issuance of a new circular for green government buildings on 1 April 2015 ("2015 Circular"), these targets have since been revised and expanded. Under this 2015 Circular are the following requirements:

• All new school and educational buildings, irrespective of whether air-conditioning is provided, should aim to have at least 1% of their electrical consumption be provided by renewable energy.
• All new open spaces and new public park projects should aim to have (i) at least 15% of their general public lighting be provided by renewable energy and (ii) at least 1% of their electrical consumption be provided by renewable energy.
• All new municipal buildings with a high demand for shower facilities (e.g., sports centers and swimming pool complexes) should have a solar hot water system to reduce energy consumption in water heating.
• All other new government buildings should incorporate renewable energy technologies as far as reasonably practicable.
• Renewable energy technologies should be incorporated in all capital works projects as far as reasonably practicable whenever the project satisfies certain criteria.

On 19 March 2014, the Hong Kong government issued a public consultation document titled "Future Fuel Mix for Electricity Generation." It foresees only a very limited role for renewable energy sources to meet Hong Kong's electricity demand in the future due to Hong Kong's limited prospects for developing wind or solar power generation.

In 2021, the government released "Hong Kong's Climate Action Plan 2050," with one of the strategies being "net-zero electricity generation." The strategy aims to stop using coal for daily electricity generation; increase the share of renewable energy in the fuel mix for electricity generation to 7.5% to 10% by 2035, and to 15% subsequently; and try out the use of new energy and strengthen cooperation with neighboring regions to achieve the long-term target of net-zero electricity generation before 2050.