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I agree that vost per watt is the mist important for situations where the install is not space constrained. On the other hand if space is a constraint, then wa
by bruce511 3y ago
I agree that vost per watt is the mist important for situations where the install is not space constrained.
On the other hand if space is a constraint, then watts per square metre (which correlates with effeciency) is more important.
Most small-scale installs are space limited. Think RVs, domestic residences, boats, and so on. However large-scale is likely to be capital constrained, not space constrained (large plots in the desert are cheap) so in that case cost per watt is the limiting factor.
- nick222226 3y agoIt's not so simple to look at one constraint for a rooftop install. When planning an install, cost per watt and watts per square meter interact, as does module size, module weight, low illuminance performance, durability and degradation, appearance, and other factors.
- jeffbee 3y agoIt is also true that cost per watt is not entirely intrinsic. If a technology finds a niche, then the cost drops.
- jnsaff2 3y agoI would argue that efficiency is more important only in offgrid applications where you absolutely need to get a specific amount of energy no matter what. If you are on grid but space constricted the price per watt or rather LCOE is more relevant.