Key to the sustainability of FGC is the phasing of the development in order to limit the infrastructure investment required to a just-in-time basis.

The Finningley development will require approximately 280MVA, with the assumptions that the estimated kVA demand for the houses already assume the installation of solar water geysers and gas stoves, gas geysers and gas space heating as standard. These demands further assume the implementation of an EEDSM system that will be installed across the development for the effective and optimal operation and management of the electrical network to enhance Demand Side Management and Energy Efficiency.

These demands were then broken up into the various phases and matched with potential energy generation modes, based on Modal assessments done on site. These include:- wind, gas, tidal, solar and hydro generation linked to the estimated demand curves based on consumers.

Further, it must be noted that as a Nexus development, Energy is an integrated component of the entire Green Services concept, so storage, for example, is additionally catered for in the transport and Water reticulation components, and certain generation in the waste management components.

Currently tariffs are available online from the various municipal sites. At Finningley, the collection will be integrated into the levies and as such energy is a component of metered consumption linked to metered consumption of the other services as shown above and managed through the ICT foil. This gives better collection results as well as cross subsidisation of demand and supply of the various services provided, remembering that Finningley is essentially an "independent offgrid" supplier. Ultimately excess generation can be sold at peak, given on site storage (hydro, etc).