Dear Haseeb,
In short, your budget is not sufficient to support mentioned loads.
As described in your post above, your connected load actually totals around 2,000 Watts.
There are a few things to keep in mind.
Solar PV System does not come cheap. It cannot be compared with a UPS environment due to different natures of the two (one is used for storage and supply, while the other is used for power GENERATION, storage, and supply)
A system's DESIGN is the most important factor for successful operation. A guarantee of 25 Years for Panels, 10 Years for Inverter does not mean a thing if the system will not work for more than 10 days (owing to a poor design)
System designing takes into account the following factors:
PV Panels: wattage, voltage, amperage and no. of panels, and configuration of panels.
Inverter: Features (mostly) such as peak load handling capacity (power and time, both)
Batteries: Ampereage, discharge ability, cycle life, no. of batteries, voltage of battery bank and install configuration.
Charge Controller: (mostly) built-in to Solar PV Inverter or available separately - its charging capcity, features (many factors)
A system's individual components come in different categories (A+, A, B, C etc.). If the system has been designed properly, the category of components does not matter by much.
Every system needs to be somewhat over-sized to account for solar insolation (sunlight intensity, availability etc.) and to support CONNECTED LOAD. Connected load is what is taken into account when designing a system (not the appliances you want to function. Because the system needs to support all appliances for small period of time as if they were running together. This CANNOT be overlooked.
Most importantly, get the system from someone you trust. Based on recommendation or close relative etc. Because they will be able to improve the system if it starts to cause problems in a month or so. Tough conditions for system testing are approaching soon (summers), otherwise your investment of half million or more will be wasted.
Source: I am involved independently in a solar energy consulting role. Have been facing countless examples on a daily basis of individuals and companies coming up to me with their dead investments (starting 0.2 Million up to 20 Million) and looking for further directions. In these cases even, all is not lost. But a major chunk of investment that could have provided decades of good service is gone, and they have limited capacity left to improve the system or simply make it work.
Whereas companies like Nizam and other (supposedly) big names do residential projects like 3+3 kW (above) etc, we handle industrial projects like 20 kW, 100 kW, 650 kW with a single all-in-one system all running flawlessly for years and years.
Do your homework and consult actual customers before you make a move. Or simply to avoid the hassle, hand over the project to someone you trust with your money. Best of luck.
