Hi Everybody-
Thanks for your feedback. For what it is worth, I couldn't find anything that could quickly meet my needs, but all of your help and comments helped point me in the right direction. Good to see people posting comments!
Anyhow, since I'm really pretty wedded to the .NET environment, and I'm familiar with those code libraries and dependencies, I just decided that it would be easiest to make a library that I wanted with the functionality that meet my current use cases and publish it on Github. This first version lets you grab data from any epw file and returns the hourly data with some statistical analysis of the data. Github explains the rest. I'll be adding to the project over the next couple of days.
https://github.com/chiensiTB/EnergyPl...
Elements probably has an internal data model that you could potentially extract and use as a library.
Elements seems to be written in Flash / ActionScript or something like that; so unless that is the development platform or can interface with that code, it may not be possible to utilize it.