Solar Panel Degradation In Space

This is what is referred to as the degradation rate.

Solar panel degradation in space.

With borosilicate glass panel coverings this may be between 5 10 efficiency loss per year. 2 the 3sigma variation in the degradation curves possible for. Over time solar panels lose their ability to absorb sunlight and convert it into solar energy due to factors such as hotter weather and the natural reduction in chemical potency within the panel. Initial results show that the measured saw short circuit current is degrading 0 2 to 0 5 percent per year.

The method for predicting solar cell degradation in space radiation environments developed recently at the us naval research laboratory nrl is compared in detail with the earlier method developed. Solar panels will experience efficiency degradation over time as a result of these types of radiation but the degradation rate will depend strongly on the solar cell technology and on the location of the spacecraft. 1 the nominal degradation curve over the product life in space. One way solar panel degradation happens is through microcracks that form in the silicon of the solar cells.

Although crystalline solar power panels are often sold with 25 to 30 year lifespan guarantees those 30 year old modules won t be performing as well as they did on day 1. The lower the degradation rate the better the panel. Space based solar power sbsp is the concept of collecting solar power in outer space and distributing it to earth potential advantages of collecting solar energy in space include a higher collection rate and a longer collection period due to the lack of a diffusing atmosphere and the possibility of placing a solar collector in an orbiting location where there is no night. The use of a solar cell in space requires knowledge of the degradation of current voltage i v characteristics under light illumination.

Financially degradation of a pv module or system is equally important because a higher degradation rate translates directly into less power produced and therefore reduces future cash flows. These small cracks cause electrical connections to deteriorate meaning there are fewer paths for those electrons from the sun to take and thus less energy goes to your inverter and into your home business or farm. This degradation is illustrated by the decrease of the maximum power pm short circuit current jsc and open circuit voltage voc induced by the interaction with energetic particles present in space. Furthermore inaccuracies in determined degradation rates lead directly to increased financial risk.