Labour's 2017 manifesto committed to ensure that 60 per cent of the UK's energy comes from low-carbon or renewable sources by 2030. At the 2018 party conference, Labour committed to a target of net zero emissions before 2050 which at the 2019 party conference was revised to net zero by 2030. 

In September 2018 Labour published 'The Green Transformation' setting out its environment policy. This established tackling climate change, creating high air and water quality, and reversing biodiversity decline as three priorities. 

Early in 2019 in an article featured in the Guardian newspaper in April 2019 Rebecca Long-Bailey the Labour MP for Salford and Eccles, and the shadow business secretary signalled that the UK must have a 'Green Industrial Revolution' and that Labour would lead it. 

Responding to the government's sector deal for offshore wind she said a green industrial revolution led by a labour government would include plans for a seven-fold increase in offshore wind by 2030. 

Over the course of 2019 the party carried out a consultative exercise to inform its 'Green Industrial Revolution' programme. The call for evidence indicates that in Labour's view addressing the environmental challenges in a way that deliver jobs and industry across the country will require sensitivity to the region-specific opportunities and risks from decarbonisation. It further stated that action from government is needed to ensure that the UK reduces its emissions in a way that, protects and creates quality jobs and permits engagement in decision-making processes.

On the 7 November the Labour party released a short campaign video.

We will need to wait for the release of the official Manifesto to see how many of the environmental policies are included as election pledges.