I can provide gas generator of 25 kva 20 kw made in pakistan. I am engineer i made brandnew gas generator with brandnew kajali alternator with all gas parts imported from usa which generac people use it. We are using 125kva kohler gas generator in a factory but american engines have so many faults. I have installed toyota corolla 1500 cc engine, parts are available easily and most reliable engine. I can qurantee you can use on prime as well.
Generac or kohler are only famous for gas generators in usa. Fuji deluxe and others are chinese shop keeper say its japenese its all lie. All you can see denyo diesel in the market brandnew all are pakistani made. You can see my gas generator you cant say its made in Pakistan.
kohler or generac 25 kva price range 750,000 to 800,000 auto change over switch 50,000 extra. I can make on order at Rs 450,000 with auto starter and chage over switch. My gas generator consumes less gas than american generators.