A 3kVA solar system is a popular option for homeowners, especially those with 2–3 bedroom households interested in utilizing solar power. Installing a 3kVA solar power system typically produces about 375 kWh per month or roughly 12 kWh each day. This amount of energy is sufficient to operate a 208-liter (55-gallon) water heater for an average family's daily use, but not much else simultaneously. Without running the water heater, you could easily supply electricity to a refrigerator, microwave, lighting, fans, television, laptop, and still have surplus capacity to charge your cell phone.

Here’s a breakdown of the appliances that a 3kVA solar system can support:

Lights: A 3kVA setup can handle all the lighting needs in an average American household, whether using LED or CFL bulbs. For example, with 10 LED bulbs rated at 10 watts each, you’d use 100 watts (or 0.1 kVA) total. Operating them for 5 hours uses just 0.5 kWh daily.

Refrigerator: Since refrigerators consume power consistently, it’s good to know that a 3kVA system can keep one running smoothly, helping you store food without issue. Assuming the fridge draws 150 watts and operates all day, it will need about 3.6 kWh every 24 hours.

Television and Entertainment: This system size can power your TV, game consoles, and other entertainment equipment so you never miss your favourite programs or playtime. For instance, a 42-inch LED TV might use around 90 watts; four hours of viewing amounts to 0.36 kWh per day.

Computers and Electronics: With a 3kVA system, you can run several computers, charge devices, and plug in various small electronics essential for everyday activities. Say a desktop computer uses 300 watts; running it for 6 hours draws 1.8 kWh daily.

Air Conditioning: While a 3kVA solar array can provide some support for air conditioning, it may fall short of fully meeting the cooling requirements of large homes during hot summer months. In such cases, additional solar capacity would be necessary, especially for central air systems.