 THE cost of renewable energy devices is preventing people installing them on their homes in Scotland, according to new research.  a survey showed almost two thirds of Scots are interested in renewable energy technology such as solar panels.  However, they are put off by the price, which can be as high as GBP12,000 for an array of solar panels or GBP23,000 for a home wind turbine.  The survey of 1,002 people in Scotland, carried out by Ipsos-Mori for the consumer advice website GreenEnergyNet.com, found that 64 per cent of adults would be interested in installing some type of micro-renewable device.  However, half of those questioned, and 59 per cent of those who said they were interested in the technology, said  