Cost of renewable energy — the news is good

Durabilty of wind turbines has been queried. Suggestion being, that they are unreliable, so maintenance costs & so, ultimately, the cost of the electicity they produce, is high. A recent study says otherwise:

http://www.greencarreports.com/news/1090506_long-lived-clean-power-wind-turbines-last-25-years-study-says

Good news for solar too:

http://us4.campaign-archive2.com/?u=afd7d419b8ad8bf6117ea1def&id=5c736bc48c&e=19c9911ba4 / photo voltaic photovoltaic PV renewable green non-renewable finite resource windmill wind mill blade clean energy wind power solar reliable source electricity durability durable investment turbines generator generators replace repalcement new study Imperial College Business School London 25 years upgraded upgrade replace replaced reseaarch researchers survey surveyed onshore wind farm United Kingdom U.K. local wind speed data NASA Illinois Wind Farm NASA data compare comparison compared wind speed recorded turbines at each farm formula calculate how wear and tear affected affect machine machines machines' output crunch crunching the numbers researchers research researcher concluded conclude conclusion expected lifespan of 25 years upgrades upgrade needed study found oldest wind turbines produce three quarters three-quarters of their original output 19 years in operation equates similar performance electricity generating generation electricity-generating gas turbines new research also refutes refute previous claim average electric power electricity output wind turbines decrease decreases decreasing one third after 10 years conclusion wind turbines operate for long periods of time major repairs replacement newer designs design authors author study investment wind farms farm wind generated generate generation wind-generated power reduce environmental impact electric cars cleaner clean energy source plug-in plug in carbon footprint cars car electric vehicle EV Honda wind turbines turbine energy Marysville Ohio plant vehicle production greener sustainable renewable energy alternate alternative /