EU

EU - Energy Unit is the measure of energy production, consumption, transmission and storage.

These units are not similar to IRL electricity, basically this is "virtual" items, that can stack unlimited amount of times and needs storage items like RE Battery or transportation\distribution network to be used. EU stored in items or devices wont decay over time.

All Industrial Craft 2 machines involved in production or consumption of EU.

EU is not related to Redstone current, but, multiple machines can be affected by redstone currents, also Detector Cable can produce redstone current if any EU passing it. Some machines allow lever to be mounted directly on it's block.

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

EU/t

EU/t means Energy unit per tick. If SSP or SMP server able to handle all ingame calculations, clockrate ~20 ticks per second. If server not able to handle game, clockrate will drop significantly and you will notice ingame time slowdown. If clockrate is 10, ingame second will last as long as 2 IRL seconds.

EU/t used to measure EU consumption and production, EU/t can be measured with an EC-Meter by clicking on any cable two times with some delay.

EU-Packet / Voltage

EU-Packets are the transmission containers of EUs. They represent voltage in Industrial Craft 2. This value have nothing with IRL voltage.

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

There is no way to measure what size of packets travels through a cable or machine but they can be read from EU emitting blocks.

Emitters such as generators, storage units, and transformers, can emit EU-Packets.

Emitters

• Generators emit packets as big as their output is.
• Storage Units always emit packets the size of their "out" value.
• Transformers behave like Storage Units. They additionally able to upgrade 4 packets into one of higher tier or downgrade single packet into 4 of lower tier, behaivior controlled by redstone currents.

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

Nuclear Reactor able to provide power of any "Voltage" range based on setup, max possible energy output is 2400 EU\t it will burn any device connected.