infrastructure

Ubiquiti Unifi UXG-Max Router: The Most Boring Installation in Memory

The transition to AT&T Fiber meant jumping from 60/10 mbps service to 500/500 mbps service. Our old router was SmallWall on a recycled HP T620 Plus thin client. SmallWall is a fork of m0n0wall, which I used for years previously. And a history lesson, m0n0wall was the progenitor of pfsense.

Alas, that little hardware/software combination simply wasn’t up to this new, and much faster, ISP. It could only manage to pass 120 mbps. The CPU tracking in SmallWall didn’t show it to be overburdened. I suspect other aspects of the hardware were the problem. It has a dual-ported Intel NIC. They’re 1G ports, connected to the host via a PCIe x4 connector.

UXG-Max

I could have swapped out the T620 Plus for something newer and faster. However, I decided to extend our installation of Ubiquiti Unifi gear by adding their Unifi UXG Max router. That would allow me to see the ISP/router performance in the Unifi UI, which is handled by the Unifi Controller app running on a local Raspberry Pi400.

We came to use the Unifi line by way of their Wi-Fi access points. That was the end-state of what had been a long-running search to deliver reliable Wi-Fi. When our Ubiquiti PowerAP N died we deployed Unifi AC Pro access points. So began our foray into “software defined networking.”

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Presenting on Backup Power to the Montie Beach Civic Club

The evening of Thursday, September 12th I will be giving my presentation on an Affordable Approach to Whole Home Backup Power to a meeting of the Montie Beach Civic Club. This is the fourth time giving this presentation this summer, and most likely the last.

Each time I give it the slides change a little to reflect the time and place. Also to add little things that I’ve learned  along the way. This time I’ve added the following image which reflects the reality that we are currently in the peak of the Atlantic hurricane season.

Hurricane Season

This week Houston had a near miss with Hurricane Francine. Initially moving toward the Texas gulf coast, it veered northeast toward the Louisiana coast. Nonetheless, it serves as a reminder that we need to be prepared for those events that impact the city. We’ve already suffered a number of days of power outage this year, the result of the derecho and Hurricane Beryl.

In truth, much of the reason for this post is to give me a place to put a link to download the slides as a PDF. That way I can have a URL to be the target of a QR code contained in the slide deck.

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On Batteries for Whole Home Backup Power

EcoFlow Ultra BasicIn recent weeks I’ve twice given my presentation on an Affordable Strategy for Whole Home Backup Power. The first time was online using Zoom. The second time was live at the July meeting of the Norhill Neighborhood Association. Both went very well. But as ever, the presentation changed a little from one outing to the next. In particular, a Norhill resident had a comment about battery storage.

This inspired me to show a couple of slides I had originally skipped in the interest of time. Simply put, I’m not a fan of whole house battery backup. And I’d like to explain the logic my position.

For the love of sunshine

Our is a modest home. A hundred+ year old Craftsman Cottage built by William Wilson Realty Company. This kind of home has a roof that’s all angles. There’s just not much contiguous space upon which to locate solar panels.

Further, one of the truly great features of our older neighborhood are all the mature trees. The place is just rich with grand old Maples, Pecans, Oaks and Sycamores. Even the occasional Loblolly pine. Our property has a mature Pecan in the center of the back yard.

All these big ‘ole trees tend to shade single-story homes like ours. Those houses that do have solar installations are mostly two-story homes, that manage to peer out beyond the treetops.

Oaks over the east end of Bayland Ave After Hurricane Beryl

So, we don’t have solar panels on the house. Many companies have tried to sell us on the idea, but in the end, it’s just not practical for this house, at this location. That makes this all about batteries, and batteries alone. Not solar+batteries.

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Connection Options for Backup Power

A spate of recent storms over the past month has much of Houston once again thinking about strategies for backup power. The crazy derecho weather event on May 16th had parts of the city without power for up to 6 days. This particular event was our first time actually using the backup power strategy we put in place after Winter Storm Uri in 2021.

Unlike a hurricane, this storm was very short-lived. Largely a wind event, it raged past just after 6pm and was truly gone by 9pm. We were fortunate. Our pecan tree took a beating, but we only lost power for about 10 hours. Even before the rain stopped, I had the Predator 9500 invertor running, just as I had planned.

Predator 9500 Inverter Getting some exercise on a dry day in March

As detailed previously, the Predator 9500 inverter powers the entire house, including our 4T central air conditioner. So, we were comfortable overnight. Only in the morning did we see the carnage the storm wrought upon all the trees in the neighborhood.

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Color Me Intrigued: Base Power Company

I routinely listen to a handful of podcasts. One of the more recent adds to my routine is Doug Lewin’s Energy Capital Podcast. It’s a little on the civilized side for me, but Doug gets some very good guests. The last episode I heard featured Zach Dell, founder of Base Power Company. I must say that I am intrigued by what they are building. Most especially in the wake of last week’s derecho, which left parts of Houston without power for several days.

Base Power on X1 Carbon Gen12

Base Power Company is a retail electrical energy provider with a potentially novel twist. Their service has two aspects; a flat monthly cost for electrical service, and a 20 kWh home backup battery mated to an 11 kW inverter.

The battery is used to cache power from the grid. In the simplest case, providing whole home backup during an outage.

Further, the company uses the battery to arbitrage the spot rate for electricity. It charges the battery during periods when plentiful wind and solar generation pushes the spot rate for power very low. I’ve read that electricity is almost free when wind and solar is really delivering. When the rate climbs the home can draw on the battery to lower the cost of power.

During periods of peak load, when the spot rate is very high, the company can withdraw power from the battery, feeding it back into the grid. It’s basic “buy-low, sell-high” play that optimizes revenue while acting to balance the grid itself.

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Backup Power: 9kW-ish Portable Invertors

Just a few days before Christmas 2021 we bought a Predator 9500 portable invertor generator. Back then, it was one of the first of a new generation of inverters delivering 7,500 watts continuous power, with 9,500 watts peak.

The Predator brand is sold by Harbor Freight. The 9500 model was introduced in 2020 at $1899. Demand was strong, and they were in short supply for a long while. By the time supply was improved the list price had gone up to $2399. It has since gone to $2499, but you can still get them for less during special promotions. We managed to get ours using a last-minute pre-Christmas coupon good for a discount of 25%!

Over time, similar models have emerged from several other companies like Genmax and DuroMax. It’s quite apparent that these are all made by the same manufacturer. They vary only a little in specific features and the color of the plastics.

Three Inverter Generators

Not long ago, Gavin’s Garage offered an unboxing video of the Pulsar PGD95BISCO Super Quite Dual Fuel 9500W Home Use Backup Portable Inverter Generator.

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