Solar projects can cause small, highly localized, and temporary temperature increases close to the ground beneath the modules; however beyond the array solar projects do not raise temperatures.
What is the 'heat island' effect of a solar power plant?
a photovoltaic (PV) power plant. Prior studies on the "heat island" effect of solar power installations have been confined to just one biome or ecosystem. For this study, the team defined the heat island effect as the difference in ambient air temperature around the solar power plant compared to that of the surrounding wild desert landscape.
The PV Heat Island Effect is real... Through a large-scale experiment where we monitored monitored temperatures over a natural desert, a large PV installation, and an "urban" parking lot for more than a year to see if we found a PV Heat Island effect.
Does a photovoltaic heat island affect a PV installation?
More experimental research is required, but our preliminary work suggests that the Photovoltaic Heat Island Effect is constrained to a small area around the PV installation itself.
Does photovoltaic heat island effect occur at night?
While the photovoltaic heat island effect was detectable in the day, the real significant warming was found in the evening hours, partially because these large photovoltaic installations took longer to cool down in the nighttime hours. RG: Why does this happen?
Barron-Gafford: We believe that this heat island effect results from the transition in how solar energy moves in and out of a photovoltaic installation versus a natural ecosystem.
Could a heat island effect occur if a solar array is completely cooled?
Analysis of 18 months of detailed data showed that in most days, the solar array was completely cooled at night, and, thus, it is unlikely that a heat island effect could occur.