Making Sense of Numbers (green C**p Edition)...

The table below is the projected income statement from a 'community' hydro-electric project doing the rounds in Aberdeen.  Do have a glance at the whole prospectus here.
I checked the 7% claim by putting the payments schedule into an APR calculator and it checks out.  But the payments to investors are backloaded, the £500k share capital (the opportunity being promoted) is obviously being used to repay earlier backers.  They are in a hurry to get it commissioned before mid September when the FIT reduces by about two thirds or so.
Now I'm presuming the "£400,00" in column one is a misprint for "£400,000" and "£500,00" for "£500,000".  And I reckon the bank closing balance at the bottom of column one is supposed to say "£400,000" and not "£500,000" otherwise £100k just disappears.  So the typos, as careless as they are, aren't the issue.
I'm trying to work out what the 'scam' is, because it's bound to be a scam.  As far as I can see, this hydro thing is basically being 'flipped' onto members of public in the form of untradeable illiquid securities that promise to start paying out profitably in a decades time, once another tier of debt investors have been paid back, and once the FIT and leecy prices have grown at a compounded 2%/2.5%.
Anyone else?