Yale Environment 360: The Swedish furniture retailer Ikea will begin selling residential solar panels in its 17 UK stores within the next 10 months. The basic package's $9,500 price tag will include 18 panels, installation, design consultation, energy monitoring, and maintenance. With energy savings and current green energy subsidies in the UK, consumers should typically earn as much as $1,244 per year and break even within about seven years, Ikea said. Great Britain's heavily subsidized green energy market is smaller...