P90/P95 or Average?
In a normal distribution dataset, 50% of the points will be below the average and 50% above. Using the average to assess the performance and return of a solar project is risky. The results have 50% chance to be below the average.
Tag: Irradiation
Solar energy in Cranbrook
How much energy can be generated by a solar farm near cranbrook?
Solar irradiation varies year after year and the actual yield depends on how the PV modules are mounted. Fixed racks are simpler, trackers are more complex but may improve significantly the harvest of energy. Continue reading Solar energy in Cranbrook
Solar energy in BC
Is there enough solar energy in BC? Where?
Ground solar irradiation can be estimated from satellite data.
The following map (produced by EcoSmart) shows the mean solar energy yield i.e. DC output of PV modules on a vertical axis tracking system. The calculations take into account the average temperature and its effect on PV efficiency. Continue reading Solar energy in BC
Solar Irradiation
GHI
The radiation reaching the earth’s surface can be represented in a number of different ways. Global Horizontal Irradiance (GHI) is the total amount of radiation received from the sun on a surface horizontal to the ground. This value is of particular interest to photovoltaic installations and includes both Direct Normal Irradiance (DNI) and Diffuse Horizontal Irradiance (DIF). Continue reading Solar Irradiation