Tesla Powerwall
The Tesla Powerwall is a cutting-edge energy storage solution designed to seamlessly integrate with residential solar systems. It is a sleek and compact battery pack that harnesses the power of the sun and stores it for later use. This battery enables homeowners to maximize their self-consumption of solar energy and reduce reliance on the grid during peak demand or power outages.
Specifications #
The Tesla Powerwall is a lithium-ion battery with the following specifications:
| Feature | Specification |
|---|---|
| Battery chemistry | LiNiMnCoO2 |
| Usable energy | 13.5 kWh |
| AC voltage | 230V |
| Feed in type | Single-phase |
| Round trip efficiency | 90% |
| Depth of discharge | 100% |
| Grid frequency | 50 Hz |
| Real power | Max continuous 5kW (charge & discharge) |
| Internal battery DC voltage | 50V |
| Dimensions | 1150 mm x 753 mm x147mm |
| Weight | 114kg |
| Warranty | 10 Years |
Cost #
At time of writing, the Powerwall is listed on the Tesla website at $10,400 excluding installation. It states "Final price will be provided by a Certified Installer", which may be approximately $15,000.
Battery monitoring #
The Tesla mobile app provides real-time monitoring of your home's energy production and consumption, offering customization options for energy independence, outage protection, and savings. Available for Android and iOS, the app allows users to track the operation and performance of their Tesla Powerwall and, if applicable, their Tesla EV. It supports performance monitoring when combined with Solar PV and enables users to switch between three battery modes: Back-Up only, Self-powered, and Time-based control, all accessible remotely with instant alerts and control from anywhere.
Warranty #
The Tesla Powerwall comes with a 10-year warranty, which covers defects and a maximum degradation of its 13.2kWh capacity to 70% at the end of the warranty period. This means a warranty claim can be made if the battery's discharge capacity falls to 9.2 kWh or less after a decade. The through-put warranty varies based on usage; for typical residential applications involving daily solar power storage and evening discharges or blackouts, it offers 'unlimited cycles,' roughly around 3,600 cycles over 10 years. For other uses, such as participating in Virtual Power Plants or off-grid charging, the maximum throughput is 37,000 kWh, equivalent to approximately 1 battery cycle per day for 10 years when considering battery degradation.