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Tesla Powerwall Costs, Specs, & Review (Guide 2024)
- The Tesla Powerwall is a high-capacity home battery storage system.
- The Tesla Powerwall 3 was released in 2024, offering a built-in inverter and higher scalability.
- Buyers expect to pay between £5,000 and £10,000 for a Tesla solar battery in the UK.
- The Powerwall system is a great way to store excess energy and gain savings of up to £280 annually from energy storage during off-peak hours.
Home battery storage can be a great companion to solar panels or on-grid energy savings. With many options, the Tesla Powerwall 3 is one of the best batteries on the market. It offers a great usable capacity within its price range and can be scaled to support even the largest homes. Let’s dig deeper and discuss whether you might benefit from a Tesla battery for home energy storage.
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What is the Tesla Powerwall and why use it?
The Tesla Powerwall is a popular brand of solar batteries. There have been 3 iterations of Tesla’s flagship home battery model, each one being a powerful storage device. These batteries can operate with and without solar panels, forming a great backup electricity solution.
The original Powerwall 1 was released in 2015 to limited markets, followed by a mass-production model in the form of the Powerwall 2 and the Powerwall+ (which is a Powerwall 2 bundled with a solar inverter). The Powerwall 3 is now available in the UK as of 2024, storing up to 13.5kWh.
Common uses of the Tesla Powerwall battery include:
- Off-grid electricity.
- Solar energy savings.
- Saving money by charging during off-peak hours for use during peak hours.
Tesla Powerwall 3 specs vs. Tesla Powerwall 2
While similar, there are some key differences between the Powerwall 3 and Powerwall 2.
| Specs | Tesla Powerwall 3 | Tesla Powerwall 2 | Tesla Powerwall+ |
|---|---|---|---|
| Price | £6,300 - £10,000 | £5,800 - £8,000 | £9,000 (average) |
| Total Capacity | 14kWh | 14kWh | 14kWh |
| Usable Capacity | 13.5kWh | 13.5kWh | 13.5kWh |
| Depth of Discharge | 100% | 100% | 100% |
| Efficiency | 97.5% | 90% | 90% |
| Continuous power output | 3.68kW - 11.04kW | 5kW | 5.8kW - 7.6kW (peak output) |
| Warranty | 10 years all-inclusive + 80% capacity guarantee | 10 years | 10 years |
| Scalable | Up to 44kW AC output, 216kWh of storage on a single-phase supply with expansion packs | Up to 10 Powerwalls (135kWh) | Up to 10 Powerwalls (135kWh) |
| Dimensions (H x W x D) | 1,098.6 x 609.6 x 193.04mm | 1,150 x 753 x 147mm | 1596 x 755 x 160mm |
| Weight | 130.18kg | 114kg | 140kg |
| Installation | Floor or wall-mounted | Floor or wall-mounted | Floor or wall-mounted |
The entire Tesla solar battery line has a very high depth of discharge, with the company claiming it is 100%. The powerwall 3 has a 7.5% higher efficiency than the previous models. It can also have a higher continuous power output. Tesla Powerwall capacity rates can be 14kWs for a single unit, but can also be scaled up to 216kWh for the Powerwall 3.
The Powerwall 3 is heavier but has smaller physical dimensions. Both models can be indoor or outdoor with floor and wall-mounting options.
How much does a Tesla Powerwall cost in the UK?
The Tesla Powerwall 3 prices can vary between £6,300 to £10,000, while the Powerwall 2 costs between £5,800 to £8,000 per unit. This does not include installation costs (roughly £2,000) and the Gateway Unit component (£800).
| Tesla Powerwall price in the UK | |
|---|---|
| Tesla Powerwall 3 | £6,300 - 10,000 |
| Tesla Powerwall 2 | £5,800 - £8,000 |
| Tesla Powerwall+ | £9,000 (average) |
Tesla battery costs can be on the higher end compared to other types of batteries. Batteries with similar capacities are usually a more expensive, often starting at £8,000. For installation, buyers can expect to add between £950 and £2,800 depending on the complexity of the installation. The Powerwall cost in the UK can also depend on the installer you hire.
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Pros and cons of the Tesla Powerwall in the UK
- High-quality performance
- Compatible with most inverters
- Large series capacity
- Does not require solar panels
- High cost
- Certified installer required
Pros:
- High-quality performance: The Tesla powerwall’s quality and capacity are unmatched within this purchase price range.
- Compatible with most inverters: Tesla batteries are compatible with a wide range of inverters, which can allow them to operate with a variety of solar panels.
- Large series capacity: Not only can you stack 10 batteries together with the Powerwall 3, homeowners can even manage up to 216kWh with additional expansions.
- Does not require solar panels: The Powerwall can operate without a connection to solar panels and can operate as a home battery based on energy from the grid.
Cons:
- High cost: Average Tesla battery prices can be higher than those of many of its competitors once installation costs are considered. While it is great quality for the price, many factors can drive up the final solar battery price.
- Certified installer required: Installing a Powerwall requires a certified installer if you want to maintain your warranty.
Tesla Powerwall installation process
Installing a Tesla house battery involves the following steps:
- Site assessment: An installer will assess the area and determine the best way to install your battery. This will involve battery placement, checking available space, and assessing your electric system. If you choose to install solar panels along with the battery, it will also involve checking your roof, ideal sunlight angles, and other factors.
- Energy audit: The installer will assess your usage patterns and overall energy consumption to find the ideal battery size for your home. If you’re wondering, “What size solar battery do I need in the UK?” we have pages dedicated to calculating this.
- Filing permits: Some regions have specific regulations on installations. Installing a Tesla battery storage in the UK may also require a certified installer.
- Upgrading electric components: If required, there may be some upgrades that the electrician will have to do. These can optimise your home for the battery.
- Mounting and racking: The exact placement of the battery will depend on available space, environmental conditions, and safety considerations. You can opt for a Tesla battery wall mount or floor model. It is also possible to store it outside or indoors.
- Inverter connection: An inverter is a device that converts direct current (DC) electricity into alternating current (AC) so it can be used by the home. Connecting an inverter involves wiring the inverter to solar panels (if you choose to install them), the battery, and your home’s electric panel.
- Installing safety measures: You should hire licensed professionals who know the safety standards and best practices for optimal safety. This will include:
- Monitoring performance: Setting up a performance monitoring framework allows you to monitor the battery storage system’s performance. Possible issues include low battery problems, system faults, or grid-related events.
Is the Tesla Powerwall worth it for UK homes?
Installing a Tesla home battery in the UK can be a worthwhile investment. The Powerwall series provides a high-capacity battery that can be stacked in series, allowing for up to 10 times the capacity. It also has a high depth of discharge and efficiency, along with a 10-year warranty, all of which indicate long-term reliability.
Alongside these benefits, it is also great value for money and can be hooked up to most standard inverters, working alongside most solar panels on the market. With great regional availability due to the company’s market dominance, it can also be purchased easily. This makes it a great solution for home energy storage.
There are some things to keep in mind, however. The cost of a Tesla Powerwall in the UK can be a bit higher once you factor in labour costs, which can be about £2,000 on top of purchase costs. They can be a great solution for your energy needs if you have no qualms about the additional installation costs.
Regardless of the downsides, the Tesla Powerwall is a strong contender for the best solar battery. This is especially true considering grants like the ECO scheme and the 0% VAT scheme, which can reduce the cost of solar panels and batteries. With 0% VAT, batteries are currently over £4,000 less expensive, so it’s a great time to buy them.
If all this information has piqued your interest, you may want to see if your home is right for a Tesla Powerwall. For that, you’ll need an installer’s help, but finding one can be laborious. Instead of wasting days looking for one, why not let us provide you with up to 4 free, non-binding quotes? We’ve thoroughly vetted every installer in our network for high-quality service. All you have to do is click the button below to get started.
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