I have a very quiet Hyundai 2000si suitcase genny , giving a 2.2 KW continuous running 230 voltage , running on petrol.
It uses a 2 & 1/2 litre tank every 3 to 4 hours of running at around 3/4 load . It can be set to Eco mode ..on a light continuous load I seem to recall it is given as seven hours running time .
It is a bit special for the power out is a pure sine waveform ( spike free ) which we need for our computers even though we do have a spike arrestor for each computer station set up .
I have run a separate line in from an outside waterproof ( IP65 ?) connection box affixed to the wall through the roof void and chased it into the walls, to give us four standard double switched sockets ( in bright red ) One for the Modem at one end of the run , one for Alison's workstation 7 a light set up , one for the lounge for light & TV and one for the central heating plant modification ( the central heating is is now a plug in /out cable instead of being hard wired to the domestic supply . )
T'was a godsend a few months ago when lightning took out the whole area for a few days and caused many spikes on the mains over the period where we could not trust the boards supply not to fry any more things in the home .
It took about six minutes to pull the genny out the garage run the connecting cable out , switch the genny on ,plug in the modem , central heating and Al's workstation
Being able to have the central heating on was good , for I'm now disabled & a diabetic to boot .. being cold wrecks me every time .
Ours is an electric start as well as a manual pull cord . The electric start can be via a key fob or actually going out and inserting /turning the key .
To make things easier for me the suitcase and all it's bits and bobs are enclosed on a four door'ed box with a removable lid on a four wheeled (100 mm dia wheels) trolley .
When it peeing it down with rain I can safely have it running outdoors well away from the bungalow & neighbours bungalows .