World’s biggest pipe has been used to capture hydrogen from coal, producing about 200 tonnes of CO2 per day.
The pipe, about 15 metres long and 2.5 metres high, was installed at a coal mine in Nzaba, Ghana.
It was initially meant to be the main conduit for the gas to be piped to the country.
But the government decided to divert the gas into the nearby field.
Ghana has about one million people.
The new pipe will help to provide enough hydrogen to power households.
The company behind the project, Apollon Pipelines, is based in the United States.
The project is part of the Ghanaian government’s goal of doubling its hydrogen supply by 2020.