As Hurricane Grace and Tropical Storm Henri cause destruction up and down the Atlantic, people living on islands and coastal territories must prepare for an above average hurricane season. In fact, the National Oceanic and Atmospheric Administration has predicted that we could see up to ten hurricanes in the Atlantic in 2021, three to five of which could have winds of 111 miles per hour or greater. These hurricanes wreak havoc on people’s lives, both emotionally and physically. They destroy critical infrastructure, leaving many people without basic services such as electricity and water for prolonged periods of time.
Fortunately, many islands are installing solar photovoltaic (PV) systems—often including batteries—to decrease dependence on volatile fuel imports and provide more reliable power to their residents. However, even PV systems aren’t invulnerable to hurricanes. Over the years, we have found that some PV systems suffer major damage during hurricanes, while others survive and continue producing power. We set out to find out why.
In 2018, we analyzed solar PV systems in the Caribbean after Hurricanes Irma and Maria. We then wrote a report, titled Solar Under Storm, detailing how to build hurricane-resistant ground-mounted PV systems. We followed that with two reports in 2020: a similar report geared toward roof-mounted PV systems and one detailing best practices for policymakers. These reports describing how to build resilient PV systems are making a huge difference in keeping the lights on for people on islands around the world.
Resilience in The Bahamas
Hurricane Dorian devastated The Bahamas in 2019. Since then, the government and utilities have been working hard to deploy reliable and resilient power. And that includes employing the best practices learned from our Solar Under Storm analysis. RMI worked with Bahamas Power and Light to design, develop, and install a solar microgrid on Ragged Island. The 390 kilowatt (kW) microgrid is built to withstand a Category 5 hurricane (with winds of 180 mph) and provides 93 percent of the island’s energy needs. The project was highlighted on CBS’ 60 Minutes.
Another system in The Bahamas built using recommendations from the reports is the 1.1 megawatt (MW) solar-plus-battery microgrid on Highbourne Cay. The microgrid, also built to withstand a Category 5 hurricane, will provide power to up to 100 residents and guests at the island’s resort. It will also save more than 1,650 tons of CO2 emissions annually and pay for itself through diesel savings in just five to six years.
The recommendations are even being used in the largest solar project in The Bahamas to date. The 4 MW solar-plus-battery microgrid on Chub Cay is expected to be complete by mid-September. Chub Cay is a privately owned island that had been powered with diesel generators. However, the Texan owner of the island, who ironically made his money from oil and gas, realized it made financial sense to switch to solar energy to supply 90 percent of the island’s energy. Applying resilience best practices from the reports only increased costs by 5 to 7 percent. This was also a cost-effective investment to ensure that the system survives hurricane-force winds.
“Fortunately, most of these systems have not had to endure a category 5 hurricane after installation. We wouldn’t wish that on anyone,” says Chris Burgess, project director for RMI’s Global South Program. “But we have a lot of data from the surviving systems of Irma and Maria that have already allowed us to conclude that these best practices do work and that these new resilient PV systems will survive severe storms.”
Beyond The Bahamas
Other islands across the Caribbean are also using the best practices described in the reports. For example, Montserrat recently completed a 750 kW microgrid. In the event that the grid goes down, the microgrid will help provide power to a hospital, airport, assisted living apartment complex, and a number of homes in the area.
A 100 kW solar microgrid on the Grenadine island of Mayreau, deployed in 2019 by St. Vincent Electricity Services Limited with help from RMI, serves 28 percent of the island’s electricity demand. It is greatly reducing the island’s energy costs and will ensure electricity is available to critical facilities during storms.
“The Mayreau project was initially specified to withstand Category 4 winds,” says Fidel Neverson, senior project manager for RMI’s Global South Program. “That was before we saw the utter destruction caused by Hurricanes Irma and Maria to ground-mount solar arrays that were built to Category 4 specifications.”
Using best practices from the first Solar Under Storm publication, RMI and the project team completely reengineered the Mayreau solar array to a Category 5 design. “We want to give the Mayreau microgrid the best possible chance of surviving the types of devastating hurricanes that have impacted the region recently so that the island’s residents can enjoy its benefits for years to come,” Neverson adds.
And in Puerto Rico, after Hurricanes Maria and Irma caused the largest blackout in US history, RMI helped the island install solar and battery microgrids on 10 public schools. “All of our procurements require installers to adhere to Solar Under Storm principles,” says Roy Torbert, a principal with RMI’s Global South Program. “The systems on these schools were built to withstand Category 5 hurricane winds. But we’ve also seen many of them continue to provide power after the grid went down due to the earthquakes that ravaged the island in early 2020.”
Helping Develop New Policies and Codes
The third report that RMI produced, Solar Under Storm for Policymakers, emphasized that it is not only installers that have to act on the recommendations. There are many things that governments, regulators, and developers can do to improve the survivability of solar PV systems in the face of severe storms. And many policymakers throughout the Caribbean are taking that to heart. The Organization of Eastern Caribbean States adopted the best practices from the Solar Under Storm reports into its building code. And the Caribbean Development Bank uses the recommendations as part of its underwriting process for the financing of solar projects.
Three years after we published our first Solar Under Storm report, we are happy to see all of the solar projects that have employed our recommendations. “We discovered that design, workmanship, quality materials, and quality checks were the difference between survival and failure,” said Burgess. “We realized we didn’t need a technical or manufacturing revolution, we just needed to have an eye for detail.”
Fortunately, islands throughout the Caribbean are using those details to prepare their solar systems for the ever-increasing hurricanes. In this way, we can ensure reliable, life-saving power for those who need it most.
Mercedes-Benz is saying goodbye to its capable, seven-passenger EQB electric vehicle – but that doesn’t mean it’s over. If you’ve been eyeing a new, quasi-affordable SUV with nationwide dealer support and a luxury logo, the time is now.
German-language Mercedes fansite JESMB is reporting that Mercedes-Benz has removed the EQB from its dealer configurator page, and the company’s Hungarian plant in Kecskemét will only produce new EQBs that have already been ordered until production of the new-look Mercedes GLB “with EQ technology” begins in 2026.
A quick search reveals that dealers are pushing hard to unload their existing stock of Mercedes EQBs. Mercedes-Benz of North Olmsted in Ohio (home of Benzs and Bowties’ Doug Horner), for example, recently advertised a new EQB with an MSRP of $59,300 with a $9,000 manufacturer incentive plus a $4,744 dealer discount. That’s more than 23% off the EV’s original sticker price and, at $45,556, is well below the $48,841 average transaction price for new vehicles in July.
MBZNO sold that car, and they’re not alone. CarsDirect has reported up to $14,500 in total Mercedes-Benz lease incentives for some EQB lease programs in select markets while TrueCar reports an average 15.6% average savings (!) off MSRP.
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For that money, Mercedes’ EQB customers get a capable, mid-sized SUV with room for five adults and two kids in (what my family has come to call) “the wayback” seats, 251 miles of EPA-rated range and a 30 minute 10-80% charge time on a 100 kW DCFC. 0-60 mph performance and highway acceleration is adequate, ranging from a 6.0-second sprint in the EQB 350 models and 7-8 seconds from the 250+ and 300 models.
It’s still a tough sell
Mercedes EQB slasher sale; via ChatGPT.
Even with the discounts, there’s no escaping the fact that EVs from brands like Chevy, Ford, Hyundai, and Kia have objectively eclipsed the EQB in terms of range, performance, and charging speeds.
That said, the three-pointed star still means something to a lot of buyers. If they can look beyond the specs and take the EQB for a test drive, they might find that the signature Mercedes-Benz feel indeed lives in this well-rounded electric SUV, and that will probably be able to handle everything they throw at it. Plus, with the $7,500 Federal EV Tax Credit set to expire on September 30th, the current deals on this electric SUV might be as good as it gets!
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A condominium complex in Northern California recently installed EV chargers into every single one of its 143 parking spots, future-proofing the whole complex for a fully-electrified future, and it managed to do it with zero cost out of pocket. Here’s how.
Now, right off the bat, we have to come clean: the operative phrase, there, is “out of pocket.” While this installation is still very low-cost, it was only made zero-cost for the complex thanks to a utility incentive from Peninsula Clean Energy (PCE), a local clean energy utility in San Mateo County.
However, that incentive covered $2,000 per spot, and that’s still a really low cost for installing chargers into every single parking spot in a complex nonetheless.
The condo complex is Bayview Condominiums in Millibrae, CA, just South of San Francisco. The region is a hotspot for electric vehicle adoption, so there’s no surprise that we’re seeing some big moves in electrification in the area.
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Bayview Condos held a ribbon cutting for its new chargers this week. Image: Peninsula Clean Energy
The installation uses GoPowerEV chargers, a $1,395 low-power “Level 1” charger that can charge two parking spots at just under 2kW each. That’s rather slow compared to the dedicated chargers you’re probably used to, but it’s enough for the vast majority of driver’s needs – with an overnight charge, you can get around 50 miles worth of range on most of today’s EVs.
But if you do need more than that, there’s an option. Each of GoPowerEV’s chargers has 3 plugs: two 120V, 20A NEMA 5-20 outlets, and one 240V, 20A NEMA 6-20 outlet in the center. The chargers are meant to sit between two parking spots, with drivers using the outer low-powered outlets most of the time.
But if one driver needs a quicker charge on any given night, they can take the middle outlet and request more power for a few extra cents per kWh via GoPowerEV’s app (though, still, only 3.3-3.9kW, and only if your neighbor doesn’t need much of a charge).
This isn’t the only provider or the only solution for an apartment complex. Some complexes install a smaller number of higher-powered, shared chargers at a higher cost, and some have chosen to install a more basic, low-powered outlet for every single spot, meaning nobody has to fight for chargers – and that’s the solution Bayview Condominiums went with.
Low powered charging is a good solution for most
The plus side of this lower power charging is that it can be done for low cost. As mentioned above, this project actually cost the condo complex nothing to install. PCE told us that this was an exceptional case, an easy project with no need to dig trenches or run conduit. It also helps with site design for free, and offers the aforementioned $2k per charger incentive (it also offers incentives for higher-powered charging, but requires cost charing on those projects). Which makes it a bit of a no-brainer for any apartment complex in a similar situation.
Low power charging has become a more popular solution lately for large projects like these lately, as the economics of how cheaply it can be done has really come into focus (and as building codes have changed to accommodate the idea, as happened recently in CA). Each parking spot costs tens of thousands of dollars to build anyway (and even moreso if they’re underground, as is the case at Bayview condos), so a ~$2,000 cost to add EV charging to the spot feels like a drop in the bucket, especially in an EV-heavy area.
Image: GoPowerEV
Low powered charging is also the favored solution of Forth’s Charge at Home program, because of the low cost and the fact that it covers needs for the vast majority of drivers. Exceptions exist, but it’s always possible for people to backfill a little extra charging with a public charger, work charger, or fast DC charging if a level 1 outlet at home isn’t enough.
Compare, for instance, the cost and magnitude of installing a single 350kW DC fast charger. Yes, this can charge a car in as fast as ~16 minutes or so, but 350kW is a lot of power, creates big spikes in demand, and will usually have a cost in the high five figures to low six figures per charging stall.
Meanwhile, Bayview Condominiums’ entire system has a total power of somewhere on the order of 300kW, and cost about a buck a watt to install (<$2k x 143 units). So, for a similar price as about two fast DC chargers, and with similar overall power delivery levels, the complex was able to electrify every single parking spot. That means nobody has to worry about shuffling around and fighting over the one central charger, everyone can just park in their assigned spots and be full in the morning, the ideal no-stress EV ownership experience.
More apartment charging is better for everyone
But a project like this is not just for areas that already have a lot of EVs, because it can help to enable more EVs. Apartment-dwellers don’t have the easiest time charging, and the trouble of having to search for an apartment that has a charger, or having to go charge publicly at higher cost at often-busy fast chargers takes a lot of the fun out of EV ownership.
Image: GoPowerEV
So having a charger already set up in the parking lot means your residents will have a much easier time choosing an EV the next time they look into buying a car. And that’s great for everyone – fewer fumes in your parking structure, better air quality in your local community, and another strike in the fight against climate change.
And EV charging is becoming one of the more in-demand features for apartment buildings, with few buildings serving this need. A building can make itself more attractive by adding something like this, for relatively little cost overall.
Electrek’s Take
These options are more for building managers than renters, but this is just another step towards helping to make charging easier for apartment-dwellers. If you’re looking for more resources for apartment EV charging, either as a owner or a renter, find more on that here.
I’ve long said that the only real problem with EVs is charging for people who don’t have access to their own garage. Whether this be apartment-dwellers, street-parkers or the like, the electric car charging experience is often less-than-ideal outside of single family homes, at least in North America.
There are workarounds available, like charging at work, or using Superchargers in “third places” where you often spend time, but these still aren’t optimal. The best bet is just to charge your car wherever it spends most of its time, which is your home. When you do that, EVs outshine everything in convenience.
Hopefully the more competition we see in this space, and the more big projects like these get off the ground successfully and at low cost, the more we can finally move towards solving the problem of apartment charging once and for all.
And, frankly, we also need legislation/building codes to hop in and require this sort of thing, so it becomes the rule rather than the exception and apartment dwellers can feel secure that they’ll be able to find a place to charge. And the lower install costs get, the more realistic a legislative requirement would be.
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The Austrian Torrent and Avalanche Control Centre has deployed a Liebherr-developed battery energy storage system to power the cranes, offices, and equipment used in the construction of this year’s consolidation barrier – a critical piece of infrastructure designed to keep Austrians safe from avalanches and landslides this winter.
Here’s how it’s going.
“We could have used a diesel generator to power the construction site as we always have before,” explains Nikolaus Wieser, graduate-level engineer and site manager at the Austrian Torrent and Avalanche Control Centre. “However, we also strive to reduce emissions, so we are delighted to be using this innovative Liebherr solution.”
The battery packs in the mobile, battery-based LPO 100 battery energy storage system (BESS) deployed by Avalanche Contol Centre covers the energy needs of both the Liebherr 34 K fast-erecting crane working on the site, among other tools.
With a capacity of 94 kWh, the energy storage system buffers the fixed power connection on site. In addition to powering the crane, it supplies other equipment, such as container units, battery-powered devices, circular saws and a water pump. During the day, the storage system is used to cover the crane’s energy peaks of up to 100 kVA. Only the energy needed is consumed.
Interestingly, the site does have access to grid energy – but it’s insufficient for the peak energy needs of the crane while it’s in operation. So, when the crane isn’t in use, the batteries in the LPO 100 “trickle charge” with grid and solar, then dump the energy quickly, as needed, eliminating the need for a conventional diesel or has genset.
“The installation went well, and the storage system has been up and running ever since,” added Wieser. “That’s how it should be.”
Electrek’s Take
It’s an odd truth in the construction space, but just because you’re working for the utility doesn’t mean you’ll have adequate power (or any power, for that matter) on the job site. That’s why solutions like this one from Liebherr are critical in the long run game of decarbonizing off-highway vehicles and construction projects.
The engineers Austrian Torrent and Avalanche Control Centre has turned this BESS into something like the Orange Juicer, and by cleverly understanding their own power needs and the fact that energy is the ability to do work, they’re able to get that critical work done in quiet, serene, emission-free comfort and go home without having their brains and ears rattled by the constant thrum of diesel engines.
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