The 2020-21 May Revision includes a $965 million Greenhouse Gas Reduction Fund (GGRF) discretionary expenditure plan, plus a budget provision to make spending contingent on the amount of revenue collected in 2020-21. In this post, we (1) discuss a few potential 2020-21 revenue scenarios, (2) summarize the Governor’s May Revision GGRF expenditure plan, and (3) identify key issues for the Legislature to consider as it develops a 2020-21 GGRF spending plan in a period of high revenue uncertainty.