Project Final Report -Phase1- 09121-3300-10-The purpose of this project is to develop a new technology for electrical power cables, using a composite of carbon nanotubes (CNT) and copper. The primary goal is to build a CNT-copper composite cable with twice the conductivity of an equivalent size pure copper cable. This composite cable should also be lighter and stronger than a comparable copper cable. The higher conductivity of this new power cable will allow more electrical power to be delivered downhole in wells to power more boost (pumping) capacity and greater well productivity. The new cable would transmit electrical power more efficiently, with less loss than a copper cable. The new cable could facilitate moving more processing components to the seafloor from surface facilities. It could also help enable extending tiebacks to longer distances while carrying as much or more electrical power along the tiebacks. With its increased ability to carry power where it is most needed, the technology could help lower the cost of developing deepwater oil/gas resources.