"Other" covers the alternatives to the Power Generation Methods previously mentioned, i.e. Gas Turbine, Diesel. These to are by far the major

source of power but its important to be aware that in some instances other sources of power are used. The Title "Other" has been used

since it is non specific and allows the broad interpretation about the some of the changes that are happening to Offshore activity. There are on

platform alternatives, other alternatives concern Onshore Power Generation and Sub Sea Systems particularly Electrically Powered. Lastly

these Power Systems mentioned are also conditioned about the current activity to make Offshore Installations and Systems more efficient.

The pressure to do this is impacted by the Price of Crude, with no restraint from price then marginal fields become profitable. With minimum

margins then the impetus to be more efficient produces the need to improve productivity, this may be to equipment, systems or installation.

This Diagram shows the Boiler on Uisige Gorm converted to gas firing using an

Off Specification waste process gas containing a pollutant which could not be

vented to atmosphere. It illustrates a good example where a process problem

can be solved at the same time as providing energy, steam which in turn can

drive a steam turbine to drive machinery or a generator. Often there is a need for

steam or heated process feed water, this can be achieved by heat recovered

from the exhaust Gas from a Gas Turbinet. This improves the thermal efficiency

of the system. In doing this a steam generator/boiler may be required to produce

the required condition of the steam or process water. The added value of these

solutions is the environmentally friendliness they add to Power Generation

Some of the other alternatives to these are using steam via Boiler and steam turbine, power wired to the installation from shore, wind or wave

generated etc.

The generation of electricity offshore using deisels or gas turbine drivers is poor in terms of greeness , CO, efficiency etc, the preference is for

onshore generation with power cable to offshore installation. To make this attractive in the current situation the source of power generation

must be near the installation with a minimum length of power sub sea cable and usually shallow water. Such instances of this are few and far

between. Offshore Fields are not usually close to the location of a power source, not close inshore and often in deep water. There are thus few

instances of this type of installation.

Similar comment can be made for wind and sea turbine power generation. Aero Blade Wind Turbines need to be adjacent to the power

consuming Topsides with short cable hookups. This usually means the complexities of offshore and the related cost burden. Other wind

devices such as kites also have complications. If we consider sea turbines, they usually are in tidal areas, areas with a fast current and

more often than not shallower water. Again the attraction particularly of economics does not manifest itself for these to be alternatives.

Although not a power generation "Other" the one new subject which may condition Power Generation is the interest in the development of

sub sea facilities. Usually if you accomplish a process sub sea you do it more effectively than when you bring it to a topsides location. This

feature of less consumption of epower increases the attraction of sub sea facilities. It remains to be established that the use of sub sea

facilities will increase but it is the subject of current major interest. The below sites give some insight into this and cover such subjects as

the attraction of AC versus DC, variable voltage, high voltage, cable materials, viable depths and distances, line losses etc