EU

EU - Energy Unit is the measure of energy used by IC. It is most similar to the SI derived unit Joule. EUs are 'produced' by generators, stored by mobile units like an RE Battery or by stationary units like a batbox, transmitted along cables, and 'consumed' by ICs various machines.

EU stored in items or devices does not leak over time.

EU is not related to Redstone current, but multiple machines can be affected by redstone currents, and a Detector Cable produces redstone current if there is any EU passing through it. Some machines allow a lever to be mounted directly on its block.

Raw EU values are used to measure capacity of energy storage items or blocks.

EU/t

EU/t means Energy unit per tick. It is a derived unit of energy over time, a rate of EU consumption or production, similar to the SI derived unit Watt.

The sum of all EU/t in a wire can be measured with an EC-Meter by clicking twice; once to begin measurement, and again to finish and display the measurement. It can also be observed by the rate of change in EU capacity displayed by storage devices like the batbox.

Minecraft normally operates at about 20 ticks per second, unless you are experiencing client or server lag.

EU-Packet

EU-Packets are the transmission containers of EUs in Industrial Craft 2. Each tick, the EU sent or received by each machine is done so by an individual EU-Packet. Generators and storage devices transmit fixed sizes of EU packets equal to their rate of EU generation (their EU/t). Generator produces one EU-Packet per tick while operating, while storage devices will produce one EU-packet for EACH machine or device they transmit to.

Individual Cables are limited by the size of EU-Packets that may travel through, NOT the number of packets, NOR the total EU/t contained by these packets. If an EU Packet too large for a cable to handle tries to pass through, the cable will be destroyed.

EU-Packets come in different sizes ranging from 1 EU to 2048 EU, unlike IC1 you may not change EU output of storage devices.

Emitters

• Generators emit packets as big as their output.
• Storage Units always emit packets the size of their "out" value.
• Transformers behave like Storage Units. They are also able to upgrade four packets into one of a higher tier or downgrade a single packet into four of a lower tier, depending on redstone current.

Cables

Cables can carry unlimited amounts of EU/t but only EU-Packets that are the same or below of their maximum Voltage. You can send unlimited amounts of 32 EU-Packets through a Copper cable but not a single 128 EU-Packet. The clue is that energy loss of a cable isn't connected to the total amount of EU/t but to every single packet. So sending 100 32 EU-Packets results in 100 times the energy loss of the cable where sending one 2048 EU-Packet only result in one time the energy loss of the cable. More on that in Voltage Efficiency.

Packet Sizes

Name	Packet Size	Emitters	Cable
Micro Voltage	0-5 EU	Solar Panel, Water Mill, Wind Mill
Low Voltage	32 EU	Batbox, LV Transformer,Nuclear Reactor,Generator,Geothermal Generator
Medium Voltage	128 EU	MFE Unit, MV Transformer, Redstoned LV Transformer,Nuclear Reactor
High Voltage	512 EU	MFS Unit, HV Transformer, Redstoned MV Transformer,Nuclear Reactor
Extreme Voltage	2048 EU	Redstoned HV Transformer,Nuclear Reactor

A Nuclear Reactor is able to provide variable sized packets based on setup, the maximum possible energy output is 2400 EU\t.