This website aims to promote transparency, accountability and informed decision making.

It is designed for peer review.  Its data can be readily checked and calculations reperformed.

Renewable Obligation Certificate data has been  filtered, downloaded to excel, sorted, combined with government pricing data and summarised for each windfarm.

This data has been compared for reliability, where possible, with information disclosed in company financial statements, although most windfarms do not disclose information about electricity generated or subsidies received.

Key numbers have been extracted from financial statements to present a high level overview of the financial performance of each company, averaging data across a decade to eliminate year to year random variation.