By SolarByTheWatt.com on March 30, 2009
One of the most frequently asked questions to consultants and specialists in the solar energy industry is how efficient is the investment in a solar power installation – small or large.
We want to look at a very simple model of economic efficiency where are interested in the annual return on investment. A project involving a solar photovoltaic installation requires certain amount of capital to be built and will expect certain amount of annual revenue. The simple indicator of efficiency that we want to study is this annual return in invested capital.
By SolarByTheWatt.com on March 9, 2009
Solar power alongside the applauding it gets it is also being criticized by the opponents of it especially in terms of the different measures of efficiency – physical, economic (investment) and land area use efficiency. Land area use efficiency is the topic of this study. Let’s look at the definito0ns for the other measures of efficiency just to put our essay in proper context.
By SolarByTheWatt.com on March 4, 2009
With us having to research so much information about solar and other renewable energy we came across an enormous number of articles in which no respect is given to the units of measure in which electric power and energy are being measured. In actual fact when the correct units of measure are not used the statements do not make any sense.
What do we mean? Much too often watt hour (Wh) and the derivatives kilowatts hour (kWh) and megawatts hour (MWh) – as a measure of produced energy – are used wrongly instead of watt (W) or it’s derivatives kilowatt (kW) and megawatt (MW) and the other way around.
