The models may
incorporate different assumptions; I have no idea, but that could account for some differences.
Not exact matches
For Minnesotans, Windustry has developed a small wind calculator that compares 3 well - regarded turbines of
different sizes, includes
assumptions about pricing as of 2012, and
incorporates Minnesota's net metering law.
Clouds especially are a challenge to
incorporate into climate models, and
different assumptions — all of which reasonable — can exert an uncomfortably powerful influence over the strength of amplifying feedbacks.
If the overall return required by investors
incorporate some
assumptions with respect to property income growth, then it should be
different, and it usually is, than the initial yield or all - risks yield, which is calculated as the ratio of the property net operating income in the first year over its value or market price.