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Yaskawa Solectria Solar PVI 60TL-480 is a compact, transformerless three-phase inverter with dual MPP tracker. This inverter comes standard with AC and DC disconnect, user-interactive LCD, 8-fuse string combiner. Its small and lightweight design make for quick and easy installation and maintenance. The PVI 60TL inverter includes an enhanced DSP control, comprehensive protection functions, and advanced thermal design enabling highest reliability and uptime. It also comes with a standard 10 year warranty with options for 15 and 20 years.
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On long stretches of highway, when the landscape turns to stubbly farmland and episodes of Search Engine get stale, I have a secret Rubik’s cube for my idle mind: planning gas stops. Say what you will about the futility of saving pennies, I still do a mental fist pump from cruising past a $4.89 gas station with a tank I just topped off at $3.51.
It’s dumb. And fun. And if you thought that couldn’t get much more pitiful, now I’m doing it with electricity.
For the past few weeks, I’ve been living with the EcoFlow Delta Pro Ultra and Smart Home Panel 2, two new devices the company announced at CES 2024. This goliath battery power station and its accompanying electrical panel allow me to click my home’s wiring on and off the grid with a button press. Every day, I can game my utility bill by hoarding cheap wattage at night and releasing it at peak rate times. And when the grid goes down, my house hums on without missing a beat.
Here’s what it’s like to live with a home with secret superpowers, why EcoFlow’s new hardware differs from some of the other options, and what you might want to consider before making the leap yourself.
Home energy storage systems are not new, although you could be forgiven for thinking that after seeing how many are hitting the market right now. Anker just launched the competing Solix F3800, and Bluetti began selling the EP900 earlier this in 2023. But Tesla introduced its Powerwall – perhaps the most recognizable product in the space – in 2015. And for more intrepid homeowners, a host of companies with less recognizable names, like Sol-Ark and EG4, sell part-by-part alternatives. But EcoFlow is offering a setup that’s simpler, more versatile, and, in some ways, better.
Crucially, the Delta Pro Ultra is still a mobile power station. Unlike the Tesla Powerwall and a myriad of other systems that mount to your wall forever, it rolls. Not easily, mind you – the 116-pound battery portion is hernia bait for overly confident middle-aged dads everywhere. But it comes with casters, a dolly, and a panoply of outlets to plug into without hardwiring into a home, including heavy-duty 30A outlets.
Imagine loading it in your RV for a week away from home. Or bringing it up to your off-grid cabin. Or being the hero who drops this sucker off with a friend when their power goes out. You can’t do that with a Powerwall.
EcoFlow is also using a different class of batteries. While the Tesla Powerwall uses the same nickel-manganese-cobalt (NCM) batteries found in Tesla cars, EcoFlow uses lithium-iron-phosphate (abbreviated LiFePO4 or LFP) cells. They’re cheaper, use fewer rare earth minerals, and, importantly, they don’t carry the same risk of unstoppable 3,600-degree fires, which is a nice perk for a cooler-sized battery you intend to cohabitate beside.
Many specialized vendors also use LFP cells but sell something closer to a kit than a product. You’ll need to select inverters, batteries, cables, and terminals and turn your garage or basement wall into a maze of switches, wires, and LEDs. The EcoFlow is pretty much a one-stop shop.
Well, three stops if we’re being literal: The Delta Pro Ultra battery plugs into the Delta Pro Ultra inverter, which plugs into the Smart Home Panel 2, which is hardwired into your home. Once it’s all wired up, you control it all with one app – and that’s where the real magic happens.
My electricians set up the Smart Home Panel 2 as a subpanel, meaning it feeds off my main circuit breaker. I got to choose up to 10 circuits to move from my main breaker into the Smart Home Panel 2 – these are the only circuits I can power in an emergency, so I had to choose wisely. My refrigerator, heat pump, and Wi-Fi router made the cut – hot tub, not so lucky. Is it asking so much to luxuriate in bubbling 104-degree water while the world around you blinks into darkness? Yes.
While we’re talking about installation, it’s worth mentioning that since it took a team of three electricians a solid workday to wire this panel into my home, the review system that EcoFlow supplied at no cost will not be going anywhere. I’ll judge it as candidly as anything I’ve written about for this site, but given the value of the hardware and labor involved, you should know the circumstances.
In the Smart Home Panel 2’s most basic setup, it will simply switch every circuit inside to battery power during a power outage. The grid goes down; the fridge stays running. But it can get much more sophisticated than that.
Using the EcoFlow app, you can monitor each circuit and see precisely how much juice it’s using, either in real time, or over days, weeks, and months. This level of visibility lets you make smart decisions about where you “spend” your power in an outage.
You can do this manually or set up an “outage strategy” to automatically shut down some circuits when grid power blinks out. I can set it up to automatically cut off my kitchen circuits or feed them until the battery reaches a specified level, like 50%. As you remove or restrict more circuits, you can watch your estimated battery runtime increase proportionally based on historical data the panel has collected from tracking them. It’s very, very slick.
So, how long can you expect to get by with your EcoFlow Delta Pro Ultra until the watts peter out? The Delta Pro Ultra offers 6.14kWH of capacity, a number that I know won’t mean much to most people. For context, that’s massive on the scale of portable battery packs (the beefy Geneverse HomePower Two Pro offers just 2.4kWh in comparison) but not much on the scale of electric cars (the most basic Tesla Model 3 you can buy packs 50kWh). The Tesla Powerwall 2 offers more than double at 14kWh, while the more modest Anker Solix F3800 offers 3.8kWh.
Meanwhile, the average American household uses 28kWh a day. You probably don’t need a calculator to realize that 6kWh won’t take you far unless you modify your usage. That’s why the Smart Home Panel 2 is a necessary scalpel to pare down to just the essentials – and even they can be thirsty. My refrigerator alone uses 2.28kWh per day. Two days of emergency power, used judiciously, is probably realistic for many homes.
If that sounds insufficient for The Big One you’re expecting to rattle your city to shambles, you can also tack on extra batteries up to a total of 90kWh, which stack on the existing system like Lego bricks. Or you can augment this setup with two off-the-grid options: a generator or a solar array. My home doesn’t have either, but here’s how they work in principle.
Rip the cord on a generator, flip a switch in the Smart Home Panel 2, and you’ve essentially replaced the grid with gas, but as you’ll notice, it’s not fully automatic. Since a generator can top up the battery (in addition to powering your stuff) while it’s running, you can minimize the drone of an engine outside your house by running it for a couple hours a day, then coasting on battery.
Solar is much more convenient. You connect it directly to the Delta Pro Ultra inverter through one of two ports: One for the sort of small portable panels that EcoFlow sells and another for the type of permanently installed system that might be on your roof. The latter will accommodate up to 4kW for each inverter in your stack, up to a maximum of 12kW. Tesla’s unreleased Powerwall 3, in comparison, handles up to 11.5kW but does it with one box. Because you’re feeding DC solar power directly to DC batteries, it’s also more efficient than a setup like the Powerwall 2, which requires your solar power to be converted from DC to AC and back to DC for storage.
Preparing for an electrical apocalypse will please preppers, but as I alluded, there’s something in it for cheapskates, too. When I installed my EV charger, my utility automatically switched my electricity billing from flat-rate to time-of-use (TOU) billing. That means I pay a discounted 8-cent-per-kWh rate almost all day long, but for four hours every evening, my rates skyrocket to 25 cents per kilowatt hour.
Most utilities offer a similar arrangement to help take the load off their grid during peak hours. If you adjust your habits a bit, you can save money and ease the strain on your community’s infrastructure. I’ve already set my car to charge during off-peak hours, but as you can imagine, not all electricity use can wait. I’m not waiting until 9 p.m. to make dinner.
Enter the battery in my basement. A dedicated time-of-use mode in the EcoFlow app lets you enter the timing of your peak hours, and the panel will charge the battery when watts are cheap and then draw from it when they’re expensive. Voila. There are, of course, all sorts of options, but in principle, you can set this up once and never worry about it again. Your home will connect to and from the grid without missing a beat.
Mostly. There is one other tell-tale sign I’m on battery power: Some of my LED lights blink. A few of the LED bulbs in my standard fixtures and my recessed LED ceiling lights exhibit a barely perceptible winking while I’m on battery power. It wasn’t even enough for my wife to notice, but depending on your sensitivity, you may question whether the savings are worth it.
Speaking of which, what are the savings?
We’ve established that this system can handle taking your home off the grid during peak hours, but does that make any financial sense? Stay with me here; we need to talk numbers.
EcoFlow hasn’t provided me with final pricing yet but suggested that the EcoFlow Delta Pro Ultra inverter bundled with one battery will cost around $6,000. The Smart Home Panel 2 hasn’t been priced yet, but let’s assume it sells for the same $1,600 as its predecessor. With the 30% discount available through the Inflation Reduction Act, you’re looking at $5,320 on hardware and then about $3,000 on installation. It’s realistic to say you could own this setup for $8,320, all in.
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