Check data integrity(repost)

I need to get information from a webpage. It is located at: 1) go to <[login to view URL]> 2)click on the link "current supply and demand" 3) On this page, I need all of the fields scraped. The data I need from each is: a) section: i.e. summary, generation, interchange, coal, gas, hydro, wind, biomass b) Unit name c) MC d) TNG e) DCR I need this set up as a service on my server. The service should run once per minute and get all of these values. On a webpage, I should be able to query for a unit(s), section (s), and have all of the data for each shown as a table.