By Nina Chestney LONDON (Reuters) - Electric utilities should undergo stress tests to show how their business models are in line with limiting global warming, a global network of investors said on Friday. In a guide published on Friday, a network of more than 270 institutional investors with assets worth more than 20 trillion euros ($23 trillion) said they were concerned that utilities' strategies are not consistent with a global target to limit the planet's average temperature rise, compared with pre-industrial times, to below 2 degrees Celsius (3.6 Fahrenheit). With renewable energy generation expected to increase, and overall demand low due to efficiency improvements and modest economic growth, traditional centralized power generation is being pushed out of the merit order.
