A Tynwald answer has confirmed expected output or capacity‑factor figures for the proposed Cair Vie onshore windfarm cannot yet be provided.
A point that was already obvious, but accidentally underlined by a stray asterisk in the written question noting that the windfarm hasn’t been built yet.
The clarification came in response to a detailed Tynwald question from Arbory, Castletown & Malew MHK Jason Moorhouse, who asked for projected generation, supporting third‑party data, grid‑stability impacts, Pulrose Power Station efficiency and the likely effect on consumer tariffs.
MU Chair John Wannenburgh said the project remains at an early stage and final turbine designs have not been confirmed, meaning no definitive generation figures can be produced.
He said installed capacity should not be mistaken for actual output, which will depend on wind conditions, turbine specification, availability and system constraints.
Energy Forecasts
Forecasts will instead be set out in the planning submission, supported by wind‑resource assessments and technical studies.
On grid stability, Wannenburgh said maintaining security of supply is a statutory requirement under the Electricity Act, and intermittent generation will be managed within the wider energy‑transition programme.
He added that Pulrose Power Station’s efficiency and running costs form part of ongoing system‑cost management.
Any future impact on consumer tariffs will depend on capital costs, financing, operating performance, wider system costs and global fuel prices, meaning no reliable long‑term tariff prediction can be made at this stage.
