What Direction Should Solar Panels Face?

The general rule is that countries in the northern hemisphere should place their solar panels facing true south and in the southern hemisphere true north.  This is because the earth rotates on its axis at a slight tilt. This is called the ‘projection effect’ is the main reason why the polar regions are much colder … Read moreWhat Direction Should Solar Panels Face?

How does Insolation affect Solar Panels?

Solar insolation is a measure of solar radiation energy received on a given surface area in a given time. It is commonly expressed as average irradiance in watts per square meter (W/m2) or kilowatt-hours per square meter per day (kW•h/(m2•day)) (or hours/day). In the case of photovoltaics it is commonly measured as kWh/(kWp•y) (kilowatt hours … Read moreHow does Insolation affect Solar Panels?

Do Solar Panels Charge On Cloudy Days

On cloudy cover days, with rain, humidity, air pollution, or dust in the atmosphere, much of the solar radiation is all scattered, meaning the energy that comes from the sun go in different directions. We call this diffuse radiation, solar energy but its rate is smaller. On days like these a rooftop of a home … Read moreDo Solar Panels Charge On Cloudy Days