How long do the technologies last in constant use ?
Many of the technologies we supply are expected to last more than twenty years. Technologies with moving parts such as wind turbines, will eventually require replacement bearings. Solar panels, which have no moving parts, last an extremely long time. Some of the earliest solar electric panels, made about 35 years ago, are still producing energy today. Recently, photovoltaic panel manufacturers have started offering 20 year performance warranties.
