The surge in interest to install 'green' energy-efficient water heating systems has been causing some confusion over what's the best and most economic system available on the market. A real contender has to be the Solar energy solution, i.e photovoltaic (PV) systems that convert sunlight into electricity! Please note that this method is different from solar thermal systems that simply heat water.At AbleSkills, Solar Energy courses have been taught for some years now, giving experienced plumbers and those training to be a plumber, invaluable opportunity to learn and become fully proficient in installing what is undoubtedly, one of the rapidly emerging 'green energy' technologies.?