That entirely depends on your energy usage and your geographical location. A 1.5 kW system is currently the “entry point” for grid connect.It will cover between 16 and 25% of the energy consumption of a medium household. A 4-5 kW system will cover 100% of the energy consumption of a medium energy use household. Any size grid connect solar power system will reduce your yearly power consumption and your power bill. Naturally, the bigger the system, the bigger the benefit. To make the most of solar power, the key is to implement simple energy efficiency strategies. It is easy to conserve energy by using appropriate lighting and efficient appliances. Running high power appliances such as electric bar heaters, electric hot water systems and air conditioners etc. is really not economical. Instead of considering a very large solar system; you can also invest in energy efficient heaters, solar hot water and design features such as strategically placed vents or insulation to avoid heat entering the house in the first place. In summary – all your energy can be supplied by solar power and your budget and daily energy usage will determine the size of your solar power system.
