Solar Resources Assessment

Solar Resources Assessment

Abstract

Solar resource assessment is a necessary step in PV plant design that allows understanding the feasibility of a plant in a given location.

Solar resource assessment provides the means to accurately determine the availability of solar radiation resources for developing, deploying, and operating cost-effective solar energy technologies per the SunShot goals.

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Summery

Solar radiation data are very important in providing accurate information on solar radiation intensity and potential for the application of any solar energy technology.

Solar resource assessment describes characteristic solar radiation conditions based on historical weather data in the form of time-series in high time-resolution. Annual average DNI is a good indicator only for observation of potential annual level in the stage of a pre-feasibility.

Investors need to understand the specific site requirements and conditions that help to optimise a solar power plant’s output. A solar site analysis involves evaluation of site suitability, solar access, shadowing considerations and other variables. Investments in large solar plants require accurate estimation of the site’s suitability in order to ensure the viability of the project. A site estimation protects your investment by assessing geological conditions as well as providing an estimation of yield derived independently from contractors or product suppliers. The solar radiation measurements performed at a site assessment also increase the accuracy of a yield study.
solar insolation is quite different than the solar irradiance as the solar insolation is the instantaneous solar irradiance averaged over a given time period. Solar insolation data is commonly used for simple PV system design while solar irradiance is used in more complicated PV system performance which calculates the system performance at each point in the day.

Depending on the application, the data have to be precise, on-time, with high spatial and temporal resolution, application-specific, and easily accessible.