Morgan is expected to argue that Welsh Labour is in a “unique” position to deliver for Wales due to shared priorities with UK Labour, including increased NHS funding.
She will likely renew calls for more rail investment and control of the Crown Estate, which is key to developing offshore wind around Wales.
Highlighting past exploitation of Welsh resources, she will say: “We saw them take our coal. We saw them take our water. We will not let them take our wind. Not on my watch.”
However, it is not clear how she would achieve that.
While the UK government has given £34 million to help make coal tips safe, Morgan is also expected to say it falls far short.
Plaid Cymru said any political reset would be “too little too late” and question if it would be credible given that Labour has used the phrase “partnership in power” to describe the relationship between the two governments.
The Welsh Conservatives describe the speech as a “last ditch attempt to rescue the situation”.
Reform said they have Labour in their sights after last week’s local elections in England.