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What size Generator for solar / Off Grid homes.

What size Generator for solar / Off Grid homes.

The size of the generator you need for your house will depend on its size and your specific power requirements. Here's a breakdown for small, medium, and large houses:

  1. Small House: For a small house with basic power needs, a generator in the range of 3,000 to 5,000 watts (or 3 to 5 kW) should suffice. This size can power essential items like lights, a refrigerator, a computer, and some smaller appliances.

Yamaha EF7200E - 6kVA

  1. Medium House: A medium-sized house with moderate power needs generally requires a generator in the range of 7,000 to 12,000 watts (or 7 to 12 kW). This size can power essential items such as lights, refrigerators, sump pumps, computers, and various appliances simultaneously. If you have additional power demands, like running larger appliances or multiple air conditioners, you may need a generator with a higher capacity, typically in the range of 12,000 to 20,000 watts (or 12 to 20 kW).

HIMOINSA HCY-9 M5 - 8kVA

  1. Large House: A large house with extensive power needs typically requires a generator with a capacity of 15,000 to 30,000 watts (or 15 to 30 kW). This size can power a wide range of appliances, systems, and devices simultaneously, including multiple air conditioners, large refrigerators, electric water heaters, well pumps, lighting, and other household appliances. If you have even higher power demands, such as high-powered equipment or multiple heating and cooling systems, you may need a generator with a capacity of 30,000 to 50,000 watts (or 30 to 50 kW) or more.

HIMOINSA HSY-15 M5 - 14kVA

Click Here for a range: Solar Generators

Remember that these are general guidelines, and it's crucial to evaluate your specific power requirements and consult with a professional electrician or generator specialist to determine the ideal generator size for your house. They can help you accurately assess your needs and select the right size generator to ensure sufficient power during a blackout.

 

Appliance usage guide (Watts)

Appliance Size/type Watts

Air conditioner Large wall - 3500

Air conditioner small window - 2300

Air conditioner Ducted - 6000

Air conditioner Portable - 1500

Aquarium pump – 8

Bathroom light/heater unit - 4 x 275W lamps - 1100

BBQ Electric – 2400

Blender - 600

Bread maker - 500

Burglar alarm – 4

Clock Radio – 2

Clothes Dryer - 4000

Coffee machine – 600

Computer & monitor – 100

Digital Set Top Box – 15

Dishwasher - 2400

DVD – 50

Electric blanket – 120

Electric Cooktop Small hotplate - 1200

Electric Cooktop Large hotplate - 2200

Electric Drill – 700

Electric Frypan – 1700

Electric Oven – 2100

Electric Toothbrush - 1.5

Fan Ceiling – 90

Fan Pedestal – 50

Fax machine – 10

Freezer (new) 400 litre 72

Freezer (new) 200 litre 56

Grill – 2000

Hairdryer – 1500

Heated towel rack – 100

Heater Large fan/radiator - 2400

Heater Small oil column - 1200

Heater Medium fan/radiator - 1200

Heater Large oil column - 2400

Iron (small) - 1000

Juicer – 300

Kettle – 2400

Lawnmower – 1200

Lights Incandescent Bulb (75W) – 75

Lights Halogen Bulb (52W) - 52

Lights Compact fluorescent (15W) - 15

Lights Tubular fluorescent (45W) – 45

Lights LED Downlight (11W) – 11

Lights Halogen Downlight (50W) - 62.5

Lights Outdoor security light (150W) - 150

Microwave oven – 1000

Mobile phone charger – 5

Modem – 5

Pool heater Heat pump - 5000

Spa – 6000

Solar – 550

Pool pump – 1100

Waterbed – 400

Underfloor heating - living – 3600

Refrigerator (20 years old) – 400 litre - 148

Refrigerator (new) 650 litre - 93

Refrigerator (new) 500 litre - 72

Refrigerator (new) 400 litre - 68

Refrigerator (new) 250 litre - 35

Refrigerator (new) 150 litre bar fridge - 38

Underfloor heating - bathroom - 900

Underfloor heating - kitchen - 1200

Underfloor heating - bedroom - 1200

Rangehood – 140

Wok Electric – 2000

Saltwater chlorinator – 300

Washing machine (warm wash cycle) - 900

Rice cooker – 700

Vacuum cleaner – 1200

Printer – 100

Scanner – 80

Sewing machine – 120

Shaver – 15

Stereo System – 20

Television Standard CRT (50cm) – 75

Television Small flat screen (50cm) - 3 stars - 55

Television Small flat screen (50cm) - 6 stars - 30

Television Medium flat screen (80cm) - 3 stars - 130

Television Medium flat screen (80cm) - 6 stars - 50

Television Large flat screen (120cm) - 3 stars - 210

Television Large flat screen (120cm) - 6 stars - 100

Telephone (cordless) – 5

Toaster – 1000

Video recorder – 50

Video game (Wii) – 60

Whipper snipper – 350

Welder – 2400

Scanner – 80

Saw (Portable) – 1000

 

These are average electric appliances usage in Watts.

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