Decentralised Energy generation can be described as the generation of energy at, or very near the point of energy use.

Receive invoice in return for kWhs
Transmission inefficiencies and costs
Low levels of Autonomy
Security of Supply concerns

Ability to control levels / costs of energy requirements
Locally produced Heat and power - no transmission
Less reliance on the grid
UK now net importer of energy, less reliance on international policies
This is in contrast the traditional (and more inefficient) centralised concept where energy is transported, in some cases, many hundreds of miles from a centralised power station to the point of energy use. Power stations discharge up to 65 per cent of primary energy in the form of heat to the atmosphere, rivers or sea. Another nine percent is lost through transmission and distribution from remote power stations to towns and cities. Ultimately the end user has to pay for this, unless they move to a more efficient, autonomous method of energy generation: decentralised energy.
Decentralised energy generation consists of efficient, and low carbon technologies, such as cogeneration or on-site renewable energy. It is important to tackle energy efficiency before, or at the same time as considering on-site generation in order to correctly size the required equipment.
Self Energy does not promote any particular technologies, but is expert in selecting the optimal mix for a given application, in order to maximise the financial and carbon reduction opportunities.
When used correctly, Decentralised energy generation can slash carbon emissions and have a significant positive impact on bottom line results.