L****a
发帖数: 572 | | L****a
发帖数: 572 | 2 It's not the per watt cost we are talking about.
Their 0.69 YMB in report should be Levelised cost measured by kWh.
The per watt cost we are talking about is module price divided by
its rated power output. For example, if a solar module has rated
power output 200W, and its price is $400. Then the cost per watt is
$2.0. When you buy a solar panel, they will list this cost per watt
number. However, cost per watt can be converted to levelised cost
measured by kWh. And $1.0/Watt usually is considere | d*****z
发帖数: 114 | 3 I just took a quick look on how to convert and summarize into a fomular.
X - module cost/w, one-time purchase price
Y - cost/kwh, ongoing charge on electricity
X = (Y / A) * R / N
A - the ratio module cost as portion of total installation cost
R - yield rate / year
N - kwhs generated / year
A is probably 50% or less, concidering all other cost like installation
labor.
R is probably something larger than (interest rate + risk premium), because
the module can not last forever. I assume it is 8-10%
【在 L****a 的大作中提到】
: It's not the per watt cost we are talking about.
: Their 0.69 YMB in report should be Levelised cost measured by kWh.
: The per watt cost we are talking about is module price divided by
: its rated power output. For example, if a solar module has rated
: power output 200W, and its price is $400. Then the cost per watt is
: $2.0. When you buy a solar panel, they will list this cost per watt
: number. However, cost per watt can be converted to levelised cost
: measured by kWh. And $1.0/Watt usually is considere
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