Green Party leader and Minister for Transport and Climate Eamon Ryan has said the future is not just about switching to electric vehicles but also encouraging people to use public transport.

He said the key metric is the re-allocation of road space to improve the bus times and make it easier also for people to walk and cycle.

"If we let car traffic come back, we will just have gridlock."

He said there is a target of having around 950,000 electric vehicles on the roads by 2030 and while that is a positive climate action measure, the focus must also be on public transport.

He said measures are already in place with Connecting Ireland, ensuring better rural transport services.

The focus is not just on long-term plans but delivering in the "here and now".

In his leader's speech at the party conference last night, Mr Ryan said that Ireland would be generating enough solar energy by 2025 to power the entire country on sunny days.

He told delegates: "Just think about it - when the Green Party joined Government in 2020, the country was powered by gas on those warm, summer days. By the time we finish in office, we will be powered by the sun."

It would be possible, he said, by bringing forward Ireland's solar power targets by five years.

Minister Ryan said by the new deadline, Ireland will have installed 5,000MW of solar capacity.

Meanwhile, Mr Ryan said he will be discussing the upcoming Cabinet reshuffle with the Taoiseach Micheál Martin and Tánaiste Leo Varadkar next week.

Speaking on RTÉ's The Week In Politics, he said they will "start to consider how we do this changeover within Government - which we will do in a stable planned-out way".

Asked if there might be a change of faces as well as portfolios, Minister Ryan said: "It will offer us the opportunity to look at that."

On the same programme, Minister for Further and Higher Education Simon Harris said: "I think it's always important that when you're going into the second half of a Government that you look and see what's working well and what can work better and look at the balance of responsibilities."

Asked if there should be changes in personnel, he replied: "It's more about the delivery of the Programme for Government and are there tweaks we can make now that can accelerate aspects of it."

Additional reporting Paul Cunningham