Land Water and Critical Materials Requirements

able 3. Resource requirements.

Indicator Name

Base Year 1997

Units

2000

2005

2010

2020

2030

Land

ha/MW

4.3

3.9

3.4

2.7

2.4

2.2

ha

0.07

10

29.3

46.1

82.3

152.1

Silicon

kg/MW

245

28

25

-

-

-

GaAs

kg/MW

-

-

-

18

16

15

Water

m3

0

0

0

0

0

0

The land requirement calculations shown in Table 3 assume the module area under plant size in Table 2 is 20% of land area, which corresponds to a 20% packing factor [14]. The module area is calculated using the AC rating under plant size, system efficiency, and the direct-normal insolation standard of 850 W/m 2. Silicon requirements are based on information in Reference 15, leading to 1.44 kg/m2 of silicon feedstock needed per wafer area or 3.29 kg/m2 of GaAs needed per wafer area. The difference between module area and cell-wafer area is, of course, the concentration tha t greatly reduces the amounts of expensive semiconductor material needed.

Solar Power

Solar Power

Start Saving On Your Electricity Bills Using The Power of the Sun And Other Natural Resources!

Get My Free Ebook


Post a comment