Eday Renewable Energy Ltd (ERE) – an Orkney-based community wind farm trust – has issued a tender for an £8,000 contract for a local supply switching design project. The deadline for submitting tenders is 2 June 2014.
The main scope of the proposed work requires interested parties to design and provide detailed, costed, installation-ready, plans for a suitable variable and controllable physical switching mechanism that can rapidly divert all or proportions of the produced electricity between the existing export connection and proposed on-site loads.
The Orkney distribution network is regulated by an Active Network Management (ANM) system which allows SHEPD, as the Distribution Network Operator (DNO), to monitor power flows and curtail individual wind turbines to keep the system within power flow limits.
Some generators with these non-firm ANM grid connections are experiencing high levels of curtailment and reduced revenue – of which, Eday Renewable Energy (ERE) is one such turbine operator.
ERE operates a wholly community-owned 900kW turbine connected to the distribution grid circuit on Eday, one of Orkney’s Outer North Isles. The turbine suffers an unexpected and very significant level of curtailment – as much as total loss of production on a daily basis and 70% of the site’s potential unrestrained production in any month.
ERE is therefore exploring activities and ways to divert power for on-site and local use. An essential part of this process will involve the installation and operation of an electrical switching and control system between the operating turbine and its current export connection and control point at the site.
Through this tender, ERE is looking to procure the services and expertise of suitably experienced contractors to assist with the key stages of putting this part of the project in place.
ERE envisages this tender will lead to the appointment of a contractor on a fixed-price basis to do all reasonable work associated with producing the outputs described that comply with the essential parameters outlined and any desirable parameters agreed prior to the contract starting.
Fees for undertaking the above are to include all the contractor’s charges, costs and expenses. A maximum deposit of 25% of the total cost of the agreed work is permissible for project initiation.