We have released our first draft version of a SAP 2012 calculator for the Scottish 2015 section 6. This is available in version 6.02a2 build 002 of JPA Designer, which you can download here: http://www.techlit.co.uk/downloads/jsetup990.exe
Please bear in mind that this is a draft version. We have tested it against the only example calculation which BRE have made available, and the results do match theirs. We have asked for further examples so we can expand our testing.
To create SAP 2102 calculations for Scotland, insert a SAP 2012 dwelling, then in the Project Information dialogue within the calculation set the location to Scotland. Then set the rest of the information as normal. You will need to make sure you have the latest database as the TER calculation uses a boiler and WWHRS from the database.