The politicians were flagged up for investigation earlier this year after the 22-member Shetland Islands Council gave the £685m ($1.11bn) project the green light.
One of them, Allan Wishart, is a project co-ordinator for Viking Energy, which is owned by Scottish and Southern Energy (50%), the Shetland Charitable Trust (45%) and a local wind developer (5%).
The other 13 councillors are trustees of the not-for-profit Shetland Charitable Trust, which manages a pot of money “to benefit the inhabitants of Shetland” and has backed the project, which it claims would bring in £23m a year for the local community and create more than 60 permanent jobs.
Critics
