The Generation Resource Adequacy Forecast Webpage
The Generation Resource Adequacy Forecast (GRAF) replaces the Power Supply Assessment (PSA). The GRAF is a detailed, interactive environment for you to explore the many levels of resource adequacy (RA) in the Western Interconnection. The GRAF shows both the deterministic and probabilistic parts of resource adequacy assessments to give you a better understanding of potential risks in the interconnection. As the growth of variable resources expanded the resource portfolio, the results of deterministic resource adequacy became outdated and the PSA became less valuable. Users were simply extracting data for their own modeling and ignoring the results published from WECC modeling. To stay relevant, the report needed to highlight the probabilistic results of resource adequacy. Unfortunately, results from probabilistic modeling are very large compared to deterministic results. Presenting all the layers of the results without producing thousands of pages became an issue. Using Microsoft’s Power BI visualization tool, WECC was able to show the results of the probabilistic RA work in a useful way.
How to use this report
We have divided the tool into sections you can access in the menu on the left. We further divided each section into pages for each topic. You can jump between pages using the menu on the left or the buttons at the bottom of each page. However, the report is designed to be read through from start to finish the first time you use it. The Road Map section on each page explains how each part of the resource adequacy is studied. Each section builds upon the previous sections. Once read through, the "Exploring Resource Adequacy" page brings all the charts together so you can study all the sections at once.
Interacting with Charts and Maps
Click a region in the map and watch as the graphics update to show the corresponding data. Some charts offer a view of data by hour, year, or month. Click the corresponding options to see specific data.