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Even though Tesla Inc. is not the only name in the clean energy business, they are the flagship of the entire industry. Take their poster child, the Tesla automobiles as an example. The electric cars have existed for a century now, but in reality, it was Tesla Inc. and its leader Elon Musk that finally got this idea the attention it deserves. A similar thing happened in the world of energy storage as well. You see, while there are other solutions for storing home energy generated by the solar panels, the world eagerly awaited to see how Tesla Powerwall (both 1 and 2) will perform in practice. Here are a few things you need to know about them.
How does it work?
The way these batteries work is quite simple. During the height of a summer heat, your solar panels will generate much more power than your home actually needs. Instead of having this energy go to waste, these batteries can store it for later use. Later on, during the night or a particularly cloudy day when your panels aren’t producing any energy, you can simply dip into these reserves and thus save a significant amount of money. To make the long story short, these batteries help you bring your home one step closer to becoming zero-energy.
The comparison of the two
Another thing you need to keep in mind is that it’s two batteries we are talking about, not just one. The Powerwall 1 battery costs about $3,000 (without installation) and it has a capacity of 6.4 kWh. As for its physical properties, it weighs a bit over 214 lb (97 kg) and doesn’t take up too much space with its size being 51.3 in × 34 in × 7.2 in (130 cm × 86 cm × 18 cm). On the other hand, its newer counterpart, Powerwall 2, costs about $5,500 (without installation), but its capacity is much higher at 13.5 kWh. It weighs 264.4 lb (119.9 kg) and is actually smaller than its predecessor taking up 44 in × 29 in × 5.5 in (112 cm × 74 cm × 14 cm). For all those wondering about the price of the installation, it ranges from $800 to $2,000, depending on the additional equipment you have.
Is it self-sufficient?
A lot of people have a certain misconception about the capability of these batteries. Although more powerful than what we have seen in the past, Powerwall 1 can’t buy you more than a few hours of energy. On the other hand, there are some indicators that a fully charged Powerwall 2 might be able to store 2-3 days in the same manner. Either way, seeing how otherwise you would be forced to buy this power from your utility company, it’s a great plus to your household budget. Unfortunately, this also means that you wouldn’t be able to go completely off-grid with these batteries, which is what some people were hoping for.
Is it worth the buy?
For all those who still wonder if Powerwall is worth buying, the answer is a resounding yes. Most estimations agree that it is possible for you to get your money back in six to nine years. The strongest argument for those who still hesitate is that these batteries might become more sophisticated in the next several years, which would make waiting a bit longer worth it. On the other hand, those pro-Powerwall argue that the sooner you buy it, the sooner it will pay off. There are also some things to consider, which may affect the viability of the technology, such as the rise or decline of the price of the energy in the future, the inflation, etc. These, however, can go either way.
With the imminent energy crisis that our world is facing, making your home more energy efficient is definitely a thought worth considering. It’s also the reason why you should follow the development of these batteries much more closely in the future.