Entity Framework Power Tools is a Visual Studio extension, so you need to install it first. But, there is a problem, the supported versions of Visual Studio are 2010, 2012 and 2013. Visual Studio 2015 is in Preview Version. I think that's why it is not included yet. But I have a solution that works for me in case like this.
- Download Entity Framework Power Tools
- The .vsix file is a zip, so you can unzip it using Winrar (or any other program with this functions). Unzip only the file named extension.vsixmanifest
In this file (it's a xml) you need to find a tag named SupportedProducts and add the Visual Studio 2015 version (go to Help->About Microsoft Visual Studio to check what edition you have installed) .
<SupportedProducts>
...
<VisualStudio Version="14.0">
<Edition>Ultimate</Edition>
<Edition>Community</Edition>
</VisualStudio>
</SupportedProducts>
Overwrite the extension.vsixmanifest file in the .vsix, and try to install that.
Hope this help
Update 1
I tried with that configuration (Version:14.0 and Edition:Ultimate) and It worked.To save time, you can download it in this link. I also added the Community edition.
Update 2
Julie Lerman wrote an article in her blog about how to solve this issue as well.
Update 3
I strongly recommend to use EntityFramework Reverse POCO Generator when you are working with legacy databases. If your schema could change several times not using migrations, then is preferable to have t4 template which can help you to re-generate the model every time the DB is updated. The only you need to do is right click on your .tt file and execute Run Custom Tool option, that's all. EF Power Tools also has an option that allows you to customize the t4 template.