Bloomberg: Most German tenants are unwilling to pay higher rents for apartments that are renovated to make them more energy efficient, according to a study by German real estate Web site Immowelt.de. More than 70 percent of renters in Europe’s largest economy aren’t prepared to pay more for apartments that use less energy for heating and lower carbon dioxide emissions, Immowelt.de said in an e-mailed statement today. Chancellor Angela Merkel’s cabinet last month agreed to a new law that …