Photovoltaic supplements
From Electrical Installation Guide
Contents |
Installation costs (2009)
The following table (see Fig. P21) shows average installation costs estimated in 2008 by surface and module type.
| Surface type | Module type | P/m2 | No. m2 /kW | Price/Wp for 10 kW | Price/Wp for 100 kW |
| Pitched roof (integrated) | standard | 120 W/m2 | 9 m2/kW | 7-8 € | 5-6 € |
| Pitched roof (partially integrated) | standard | 120 W/m2 | 9 m2/kW | 6-7 € | 5-6 € |
| Pitched roof (integrated) | Standard in a steel rack | 65 W/m2 (*) | 15 m2/kW | 8-9 € | 6-7 € |
| Pitched roof (integrated) | Thin film | 45 W/m2 | 22 m2/kW | 5-6 € | 4-5 € |
| Flat roof (non-integrated) | standard | 120 W/m2 | 22 m2/kW | 5-6 € | 4-5 € |
| Glass roof (integrated) | standard | 120 W/m2 | 9 m2/kW | 13-15 € | 9-10 € |
| Sun shade (integrated) | standard | 120 W/m2 | 9 m2/kW | 9-10 € | 7-8 € |
see (Guide de l’installation électrique)
True or false
- Solar panels produce less energy than is required to manufacture them.
False: The service life of a solar panel is over 20 years and only 18 to 36 months are required, depending on the direction faced, to generate the energy needed for its manufacture. Therefore, by the end of their service life, solar panels produce ten times the energy used to manufacture them.
- Intermittent supplies of renewable energy disrupt the networks
True: The power networks were set up as part of a three-tier system (distribution, transmission and supply) and are only equipped for the input of large quantities of power at very specific points in the transmission network. Networks are controlled vertically from suppliers to consumers. The connection of energy sources throughout the distribution network is changing current practices. However, since their power levels are relatively low, residential installations have no direct impact on the distribution network on an individual basis. It is due to the large numbers and disparity of these installations that the various networks need to be managed more carefully.
- One of the features of some forms of renewable energy (wind power and photovoltaic power) is the fact that power is supplied intermittently since output is dependent on the sun (or wind) which disappears in cloudy conditions or when night falls. Therefore, they are not reliable sources of energy and are not available on demand.
True – except in remote areas where extensive research has been conducted on charging storage batteries.
True – except when generators are connected to the network as the network supplements shortfalls in renewable energy.
