Thanks for that it would be ok if it was a house but it is a flat that is within walking distance from the flat but across a busy road
I'm lucky I have a lot of space but if you are trying to run a generator to power your kit I would suggest a minimum 3000w generator because as advertised it will normally give you 2800w taking into account peak loads, but you will have to run it outside of the garage under a 'lean to ' roof and ensuring that its exhaust fumes are not directed at anyone else's air intake ie openable windows, vents for gas central heating and cooking etc. Then you will have to take into account the noise it makes, the average priced generator is rated at about 90-98 decibels, but that is the maximum allowed anyway in a town environment which means it can be pretty intrusive. Now there are less noisy ones but the quieter the greater the price.... Here is an article worth reading and it has a few links.
What's the Quietest Generator you Can Buy?
Its worth researching because there are also gas powered generators and diesel powered generators (but keep in mind that whatever powers your generator you will have to store its fuel and all generator fuels are highly flammable in their gaseous state). Equally there are standard generators and inverter generators, the latter gets louder as the wattage demand goes up ie it has to give more throttle to give more watts, the former doesn't really change speed. But in modern generators, the more power output the greater the noise also the noise generated is subjective, sometimes its considered loud sometimes just annoying at the same decibel rating.
The other thing to consider is that these things aren't light and if you have to run them outside well ventilated then you have to put them away at night (sadly the population cannot be guaranteed to be honest) and unless they have a decent wheel kits ie big pneumatic tyres and handle to pull they normally weigh about 30 - 40 kilos!!
Sorry to look at the negative aspects but I forgot to get one with wheels (or rather I found a good price and forgot the wheels in my enthusiasm for a bargain) so I had to buy a sack truck to move it!!
PG