I read a recent letter from reader John Lambon (‘Turbines at what cost?’, July 10) with concern.

I wanted to address a few of his questions and correct his inaccurate assertions about Navitus Bay.

Firstly, I assure Mr Lambon that all the issues he raises – from impact of construction on marine life to impact of laying underground cabling – have been subject to detailed environmental and technical examination since 2009.

Our project team and independent specialists have undertaken in-depth studies into the potential impacts of the development, the findings of which can be found in our 18,000 page planning application.

We continue to work with stakeholders to resolve outstanding issues concerning impacts and mitigation.

Mr Lambon states that the wind park is going to receive subsidies of £1million a day for its 25 years in operation.

We simply do not recognise this figure.

Navitus Bay, like other low carbon energy generation projects, will apply for a Contract for Difference, the Government’s newly implemented support mechanism by which Navitus Bay will receive a fixed price for each unit of electricity that it generates for the first 15 years of its 25 years operational life.

If it doesn’t generate electricity, it doesn’t receive the payment.

The extent to which this mechanism would support Navitus Bay depends on the wholesale electricity market and it’s impossible to accurately predict what will happen to the market, making Mr Lambon’s calculations pure guesswork.

If the wholesale price exceeds the fixed price, Navitus Bay would pay back the difference to the Government.

Mr Lambon calls into question my own motives.

I assure readers that, while commercially viable, the project represents essential investment in sustainable and secure renewable energy, which – as Ed Davey, Energy Secretary, said when granting planning permission for Rampion Wind Park off the coast of Brighton and Hove – the UK urgently needs.

Mr Lambon says that construction of Navitus Bay would cost the Jurassic Coast’s World Heritage status. In reality the Department for Culture, Media and Sport (DCMS) said recently that, based on evidence so far, while the proposed wind farm will have some impact on the World Heritage property there should be no significant impact on Outstanding Universal Value.

Finally, I contest Mr Lambon’s assertion that the wind park will look like 300 London Eyes or 10,000 Bournemouth balloons.

The turbines would not be a solid landmass and, even at their closest point to land, would be over 14km from shore and over 21km from Bournemouth. Furthermore, the wind turbines will stand a minimum of 750m apart, which is 2.5 times the width of the entrance to Poole Harbour (300m).

If any other readers have outstanding queries please look at our website navitusbaywindpark.co.uk, or our planning application document at infrastructure.

planningportal.gov.uk Mike Unsworth, Navitus Bay project director