Much of February’s meeting was focused on the Council’s 2021 Power Plan. RTF and Council staff gave presentations soliciting support from the RTF as a technical advisory body to the Council and providing insight on the ways this Plan might affect RTF work. A main topic of interest was how climate change will be modeled in the plan and how that may translate to the RTF.
The meeting began with a presentation laying out the Council’s process for selecting representative climate data to be used in the Plan to account for future climate change and its anticipated effect on temperatures (heating degree days and cooling degree days) and hydro generation. Council staff has presented on this selection a number of times and the presentation can be found here.
This was followed up with a presentation regarding how incorporating climate change and this adjusted weather will be rolled into the Council's energy efficiency estimates. For future energy efficiency measures that are weather sensitive, the future climate will result in differing savings than what has been seen historically. In order to incorporate this in the Plan savings assumptions, some adjustments will have to be made to how typical meteorological year weather files are used in energy simulation models. Staff will be modifying key TMY variables, such as temperature, solar radiance humidity etc., using this global climate model data. In addition to this climate change work, the Council’s EE team has spent much of this quarter working though supply curves for the Plan. They stopped by at the end of February’s meeting to get the RTF’s technical expertise on a few outstanding questions. As a technical advisory body to the Council the RTF is poised to step and support this Plan work.