Ah
No they're not upgrading part of their network or charging for leafleting etc. They are saying they cannot put the transformer on a T off pole (a pole that takes cables at 90 degrees to the main cables) and have priced to put a new pole 2m away. I have seen a transformer on a T off pole in exactly the same way as we need, with less ground clearance. I dont understand it.
And you need 9kw of power just for the pasturising 😯
To be fair you are not using some low power items there are you so you do need proper supplies it is not as if you can tap off you local supply and run a TT supply across
Try having a chat with a local industrial instalation contractor ( not a one man band) and see what they can come up with. tbh at times folk can give oppinions here and the technical knowledge can be a bit er limited to say the least.
just a thought I get raw goats milk from my local farm so would not selling raw goats milk save you alot of hassle then you could use smaller supplies and get them locally from othere buildings and a cheaper instalation at the end of the day.
SD ( JIB Approved Electrician)
Where are you in Zooooomerset btw I live near Wellington