Our Future Energy Storage Options
TESLA HOME BATTERY
Deliveries begin in 2016
Energy Storage for a Sustainable Home
Powerwall is a home battery that charges using electricity generated from solar panels, or when utility rates are low, and powers your home in the evening. Automated, compact and simple to install, Powerwall enables you to maximise self-consumption of solar power generation.
Solar Powered Day and Night
The average home uses more electricity in the morning and evening than during the day when solar energy is plentiful. Without a home battery, excess solar energy is often sold to the power company and purchased back in the evening. This mismatch adds demand on power plants and increases carbon emissions. Powerwall bridges this gap between renewable energy supply and demand by making your home’s solar energy available to you when you need it.
Reduce Your Electricity BillIn the United Kingdom, the price you are paid for the excess solar power your home generates is lower than the price you pay for electricity from the utility grid. Given this rate structure, it is more cost effective to consume your solar power than to sell it back to the utility. By storing your home’s surplus power and using it when you would otherwise need to pull from the grid, Powerwall minimises your net spending.
Energy Security Powerwall automatically switches to battery power in the event of an electric company outage, bringing peace of mind to those who live in areas prone to storms or unreliable utility grids.
Current generation home batteries are bulky, expensive to install and expensive to maintain. In contrast, Powerwall’s lithium ion battery inherits Tesla’s proven automotive battery technology to power your home safely and economically. Completely automated, it installs easily and requires no maintenance.
Powerwall comes in 10 kWh weekly cycle and 7 kWh daily cycle models. Both are guaranteed for ten years and are sufficient to power most homes during peak evening hours. Multiple batteries may be installed together for homes with greater energy need, up to 90 kWh total for the 10 kWh battery and 63 kWh total for the 7 kWh battery.
How Much Electricity Does My Home Use?
Common household electricity consumption.
Flat Screen TV0.1 kWh /hr
Lights Per Room0.1 kWh /hr
Laptop0.05 kWh /hr
Refrigerator1.6 kWh /day
Clothes Washer2.3 kWh each use
Clothes Dryer3.3 kWh each use
How It Works
Home solar installations consist of a solar panel, an electrical inverter, and now a home battery to store surplus solar energy for later use.
- Solar panel Installed in an array on your roof, solar panels convert sunlight into electricity.
- Home battery Powerwall stores surplus electricity generated from solar panels during the day or from the utility grid when rates are low.
- Inverter Converts direct current electricity from solar panels or a home battery into the alternating current used by your home’s lights, appliances and devices.
Contained within Powerwall’s outdoor-rated enclosure is a rechargeable lithium-ion battery, a liquid thermal management system, a battery management system and a smart DC-DC converter for controlling power flow.
- TechnologyWall mounted, rechargeable lithium ion battery with liquid thermal control.
- Models7 kWhFor daily cycle applications10 kWhFor backup applications
- Warranty10 years
- Efficiency92% round-trip DC efficiency
- Power2.0 kW continuous, 3.3 kW peak
- Voltage350 – 450 volts
- Current5.8 amp nominal, 8.6 amp peak output
- CompatibilitySingle phase and three phase utility grid compatible.
- Operating Temperature-4°F to 110°F
- EnclosureRated for indoor and outdoor installation.
- InstallationRequires installation by a trained electrician. DC-AC inverter not included.
- Weight100 kg / 220 lbs
- Dimensions1300 mm x 860 mm x 180 mm 51.2” x 33.9” x 7.1”
- CertificationNRTL listed to UL standards