The single biggest expense will be your battery. If I understand you correctly, you want to power a 2kw device for 24 hrs. thats 48kwhr. which is about 4 tesla

The single biggest expense will be your battery. If I understand you correctly, you want to power a 2kw device for 24 hrs. thats 48kwhr. which is about 4 tesla power walls. you then need enough panels to provide > 48 kwhr of power to charge it.