When did the Greens get elected?
£13m in generators powering 1500 homes.
To generate an IRR of ~20% each home must pay at least £155 in electricity bills a month, every month, for 14 years. This assumes that the facility costs absolutely nothing to run or maintain - that every dime paid back in bills is pure profit.
Just for laughs, assuming the plant costs 10% of its purchase price per year to run and will tolerate an internal return of 0%, the monthly minimum is a little over £120. To get that IRR of 20% the bill would be roughly £230.
Even were I to assume that all power generation for those 'green hills' of England were 100% nationalized and thus immune to factors such as IRR, that is some mighty expensive "free power". More than double what I pay for my nice fission generated stuff.
What the heck does all this mean? It means the image of the frugal Scotsman is as watertight as the Graf Spee.