Board Thread:Questions and Answers/@comment-68.3.224.32-20130827031049/@comment-3075738-20130827034328

Directly storing MJ:

Conductive pipes store MJ produced by anything, however it quickly dies out.

Otherwise, no.

Alternate method:

You can convert MJ to EU using Engine Generators, then store that EU in an MFSU or some other storage, then use an Energy Link to convert it back to MJ.

The output can also be controlled.