Icon for iOS Energy App

C'est ce qu'une entreprise en/au(x) Australia recherchait pour leur icon design

The app is basically a spreadsheet on your phone. It allows users to calulate the energy and financial performance within commercial buildings.

The theme is along the lines of "energy+financial feasibility".

Words I would use to describe it would be:

simple
sophisticated
catchy but not flashy
professional
hi-tech but not nerdy

The icon will need to be created inline with the iOS Human Interface Guidelines and packaged in a range of sizes specified in the iOS developer library.

Client likes the new simple style iOS icons - something really simple, pretty straightforward and professional.

An example of what the client likes is attached.

He would like to see a similar 'energy' bolt combined with perhaps a graph line or bars Voir plus