Hello Mark,
You gave just a little information about your project but I can tell you my opinion and experience with similar project.
I have a power solar plant with almost 100 inverters. This plant has some time and money costs (travel costs, costs because of failures – partial or complete due to overvoltage and so on …) I was looking for scada that will tell me if anything happens. A lot of scada systems available on the market but I want scada without pc or server needed…My friend recommended me myscada box (works very well) – no pc needed, works nicely over two years. http://myscadatechnologies.com/mybox/ Hopefully it will help…