Board Thread:Questions and Answers/@comment-142.68.143.13-20130324115226/@comment-99.112.176.44-20130720051222

Assuming it is day one hv solar array makes 512 eu per tick. if you have that go directly into a mfsu which provides power to a mass fabricator the mfsu would neither gain nor lose power if the hv solar array and the mass fabricator are the only things attached to it.