This is ball-park relative to the notion of MMEX-scam Solar’s imaginary solar farm…
Installations smaller than 1MW are not economically viable.
On average, industry estimates vary from $1/watt to higher than $3/watt, so a marginal 1MW installation could range from $1-million to more than $3-million in raw cost.
A 1MW PV installation requires about 2.5 acres. Extrapolating to Mad J.’s MMEX-scam Solar claim, on the basis of 760 leased acres puts the raw cost at around $300-million.
Another common metric is an all-in cost of $500K / acre for utility-scale PV solar, so at 760 acres developed, that'd be around 380-million, which is consistent with the prior estimate.
Since Mad J. couldn’t finance a Happy Meal, the MMEX-scam Solar fantasy exceeds even MMEX-scam’s tiny teapot refinery dream by a factor of 3.