What machinery can be used to create perpetual energy? In old versions of Tekkit, HV Solar Arrays sufficed. Starting over in the new Tekkit with a friend, I decided to just use Redstone Engines to start off, having no need to worry about fuels and such. Except those engines didn't work. Whether it be levers, redstone, molten redstone, anything, the basic redstone engine wouldn't turn on. So we had to upgrade to Stirling engines and go from there. That was cut short by one of the Stirling Engines exploding, so I spent an afternoon building a new network with Steam Engines, with a pump and infinite water pool out of the way to keep them going. But like the Stirling Engines, they constantly needed coal. So my idea was to build a Laser Drill. Unlimited Coal to funnel straight into the steam engines. But first we needed to build a passive mob farm and tie it into a slaughter house for all of 10 seconds to have pink slime for the prechargers. Figuring that the slaughter house is a few too may resources for it's very temporary use, I eventually changed into Magmatic Engines. I figured a cobble generator tied to a block breaker that fed a Crucible would be enough. Nope. 24kMJ for a single piece of cobble which then made one bucket's worth of lava that output 18kMJ in a Magmatic Engine. Charming. Currently in the process of rebuilding the network so that the Crucible is accessible and can be filled with Netherrack on occasion. There must be an easier way to do this, the Crucible constantly consumes it's own excess energy meaning it has to be topped up regularly to keep the power going. I want to just have a power network built that can then be left alone and only expanded on when multiple new machines are introduced.