Tigh Na Creag stands half a mile from the sea, looking out across the Minch to Stornoway in NW Sutherland; it is a remote and beautiful location for a house, and is where Stevan Lockhart and his wife Helen now live.
Stevan is the first to admit that the fact the house was off-grid ten years ago, when they bought it, gave him the perfect excuse to experiment with alternative energy: it was that or pay £8,000 for connection and dig a trench through a burn! With no shortage of wind, be it fluky at times, Stevan opted for a wind turbine.
Initially he experimented with an Air 400 module, which proved effective but noisy, and then moved onto a LVM Aero6gen with three solar panels (for further information visit: www.tncat.co.uk/stevan/archives/5). However, having decided to turn their holiday home into their permanent residence, they needed more power, and so Stevan has recently installed a FuturEnergy I KW/24V turbine. The power has increased four fold and is sufficient for most appliances including laptops, DVD, TV, lights, kitchen appliances, although no dishwasher, and a planned fridge, all running on 230 volts via a Victron pure sine wave inverter.
The installation includes two Unisolar 64w panels and the power generated by wind and solar feeds three banks of four Trojan T105 deep cycle batteries, providing 675A hours of capacity at 24V. Future plans include an insulated battery house, connecting his wife's yarn dyeing workshop to a solar panel, install input and output ammeters.
Whilst not an electrician by trade, Stevan has found the technology involved simple to follow. His biggest brain-taxer was how to raise the new pole into place, which he solved with a 'handy billy' block arrangement (see www.diy-wood-boat.com/Handy-Billy.html).
Stevan has adopted an experimental approach to the development of his system, and suggests that making a few "character building" mistakes en route, is all part of the process. He recommends keeping your expenditure low whilst you are learning, and keep your system flexible so that you can make improvements over time. He is impressed with the FE 24V turbine: "It's powerful, quiet, well priced and easily repairable", which are all key elements of an effective installation in my experience".
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