Fact sheets about Photovoltaics
Some people state that “The energy balance is negative: Manufacturing a PV system consumes more energy than it ever produces in its life time.”
The fact is: Photovoltaic (PV) systems, like every other product, do need energy for manufacturing. PV systems pay back this energy input within 1 to 3 years, depending on cell type and installation location. During its expected lifetime of 30 years, the PV system produces therefore 10 to 30 times the energy it originally consumed.
Some people state that “Decentralised PV systems are not sufficient for commercial requirements.”
The fact is: For most stand-alone applications, photovoltaic (PV) power systems generate the least cost electricity over the lifetime of the project. Moreover, solar energy can provide technically viable autonomous solutions for a very wide range of applications from small elementary domestic needs to industrial energy service applications, from individual plants of a few watts to village or island micro grids up to the MW range.
Some people state that “The external costs of PV electricity are much higher than for other renewable sources.”
The fact is: PV systems, during their life-cycle, release some emissions to the environment as fossil fuels are still used in the process of manufacturing. The health and environmental impacts of such emissions may be expressed in monetary terms as “external costs”. For current PV installations in South-Europe the external costs are about 0.15 eurocents per kWh, which are comparable to wind energy, and much lower than the external costs of the fossil fuel technologies that PV displaces.