LONDON — Rushmore is looking for investors to help its gas and electricity power plants pay for their electricity and gas supplies.

The energy company has raised $2.6 billion in a Series B funding round led by Chinese billionaire Li Ka-shing and Chinese state-owned Power China.

The company says it has secured $1.4 billion in capital and is working on a $3 billion capital injection to meet its electricity and heating demand growth needs.

The Series B financing will allow the company to expand its production capacity and invest in infrastructure upgrades and research and development.

Rushmore’s power plant, on the west coast of England, is the largest in the country and supplies around 5 percent of the country’s electricity.

It has also built the world’s largest solar thermal plant in the UK, a $2 billion wind turbine that can generate electricity for around 40,000 homes.