Dec 16 (Reuters) - Altagas Ltd ALA.TO
* Under settlement agreement Altagas agreed to contribute 391,879 self-generated carbon offsets
* Altagas pipeline partnership, ASTC power partnership granted full release from all past, present, future obligations respecting sundance b ppas
* Settlement agreement Altagas has agreed to make a total of $6 million in cash payments over three years starting in 2018
* Altagas and Government of Alberta reach definitive agreement to settle power purchase arrangement dispute Source text for Eikon: ID:nCCN5W4XMs Further company coverage: ALA.TO