Having grown up on a farm where we generate our own power I can vouch for the fact it is
a total PITA
Everybody here uses 1500rpm air cooled Listers in that role (typically 8h/day 365 days a year) as they last forever - our last TS3 had 30,000 hours on it when it was replaced and the hone marks were still in the bores when it was stripped for a complete rebuild plus you can still get spares for anything though if you keep it in a dry shed with proper ventilation and change the oil every 250 hours all you really need is filters and the odd AVR and then chuck the whole thing away every 10-12 years and spend £6k on a new one. Downside is they are bloody noisy, stick your head under the bonnet of a Tdi engined Land Rover and rev it a bit and that's pretty close. People here have tried all sorts of other stuff over the years, but nothing else comes close. There are 3 models in the current TR (formerly TS) range, 1, 2 and 3 cylinder which produce about 4.5, 9 and 13KW in current spec I think (haven't double checked that) and you can have 1ph or 3ph, 1500rpm 50hz or 1800rpm 60hz.
I have an air cooled single cylinder 3000rpm Hyundai badged diesel 'made in China' job at my house on the farm - OK for the money but won't last long but with no more than 100 hours a year it will do me for ages. It probably won't outlast the Lister 6/1 in our shearing shed which was installed in 1958 though...
There seems to be a lot of uncertainty on what is required - a big difference in cost, installation and everything else between 2kw and 200kw!
The cost of running a generator 7 hours a day will kill him - when I used to look after the generators our TS3 (about 12KW though running at only part load for a lot of the time) used about 800L of diesel a month IIRC. I hate to think what willk's diesel bill is (and wonder exactly what he needs 180kw for!)
No idea what the circumstances are but it would probably be cheaper to find a more expensive to rent workshop with some wires into it?
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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