Floating Solar Plus Wave Energy Smackdown For Fossil Fuels
Everybody is talking about a new EU clean power project that pairs floating solar with offshore wind turbines, but they’re missing half the story. Wave energy is also part of the project. The wave part is not getting much attention, probably because wave-to-electricity conversion has fallen behind wind and solar in the renewable energy race. Nevertheless, if all goes according to plan, the waters of the EU will be peppered with wave conversion devices as well as floating solar panels.
More Offshore Solar & Wind Turbines With Wave Energy, Too
The EU project is tackling the problem of how to make room for new offshore energy industries in busy coastal waters. Finding sites for new offshore wind farms can be a tough row to hoe, as offshore wind fans in the US can testify.
The new project is called EU-SCORES for “European SCalable Offshore Renewable Energy Sources.” The idea is to pair wind turbines with other clean power systems, with the aim of reducing the overall footprint of marine energy development.
EU-SCORES comes under the umbrella of the Dutch Marine Energy Centre, which will assess two sites for hybrid marine energy systems. One is a solar-plus-wind site in Belgium, which has been getting a lot of attention, and rightfully so. Floating solar is a relatively new idea that has been catching on fast for application to inland water bodies including reservoirs as well as natural lakes and ponds. The idea of setting solar panels afloat in the open sea poses new technology challenges.
In that regard, EU-SCORES shares some similarities with the CrossWind offshore wind project under way in the Netherlands, which is also on track to receive floating solar panels.
However, EU-SCORES seems to be taking a much more aggressive approach to hybridizing offshore wind farms. As DMEC describes it, the “full-scale demonstrations are intended to prove how the increased power output and capacity installed per km2 will reduce the amount of marine space needed, thereby leaving more space for aquaculture, fisheries, shipping routes and environmentally protected zones.”
“Additional benefits achieved by co-using critical electrical infrastructures and exploring advanced operation and maintenance methodologies supported by innovative autonomous systems should lower the costs per MWh,” DMEC adds.
Wave Energy: It’s All About Co-Location, Location, Location
Where were we? Oh right, wave energy. If you caught that thing about co-using, that’s a critical issue for wave energy stakeholders. Translating the infinite, 24/7 motion of waves into electricity is a tantalizing goal, but one of the factors holding back the wave energy field is the relatively high cost of shunting clean kilowatts from seagoing wave energy generators over to coastal communities.
Back in 2014, the United Nations’ International Renewable Energy Agency took a look at the wave energy field and recorded 100 projects around the world, all of which were still in the pilot and demonstration phases. The early-stage nature of the technology made it difficult to project future costs for commercial-level projects. However, IRENA did come up with the figure of 22% for the proportion of lifetime costs that could be ascribed to power take-off systems.
IRENA also estimated that installation, operation, and maintenance, and mooring would account for another 41% of lifetime costs for wave energy projects. Co-location with offshore wind turbines would presumably shave away some of those costs as well.
About Those Locations…
Another kind of challenge for the wave energy industry is that the recovery potential varies considerably from one place to another. The one-size-fits-all nature of wind turbines and solar panels does not apply as much to the wave energy field, and that has slowed the development of more mature, efficient supply chains.
In 2016, the US Department of Energy’s National Renewable Energy Laboratory looked at the problem and noted that “wave energy technology is still an emerging form of renewable energy for which large-scale grid-connected project costs are currently poorly defined.”
“Ideally, device designers would like to know the resource conditions at economical project sites so they can optimize device designs. On the other hand, project developers need detailed device cost data to identify sites where projects are economical. That is, device design and siting are, to some extent, a coupled problem,” the lab continued.
A New Burst Of Energy For Wave Energy
Regardless of the challenges, wave energy fans have persisted, and it looks like all that hard work is about to pay off. The wave energy harvesting end of the EU-SCORES project is being attached to an offshore wind farm in Portugal, using buoy-type wave harvesting devices developed by the Swedish company CorPower Ocean, as the firm’s Commercial Director Kevin Rebenius is happy to explain.
“We see great value in showcasing the highly consistent and complementary power profile of wave energy, and how this can be combined with wind and solar to deliver a more stable and predictable electricity system based purely on renewables,” Rebenius said.
CorPower Ocean’s contribution to the wave energy field is a pumping system modeled on natural pumps such as those found in the human heart.
According to CorPower, its device can produce 5 times more electricity per ton than other wave energy harvesters, partly by enabling superior performance during calm periods and partly by maintaining performance during storms. Here, let’s have them explain.
“CorPower WECs can harvest the same amount of Annual Energy from a buoy with 1/10 volume compared to conventional point absorber WEC. 1. As comparison, a 300kW CorPower WEC has a diameter of 9m and weighs 60 tonnes. Getting large amounts of electricity from a small device significantly reduces CAPEX. The compact lightweight devices are also less costly to transport, install and service, bringing down OPEX.”
There Had To Be A Green Hydrogen Angle In There Somewhere…
CorPower is aiming to make the case for commercial viability by 2024. Meeting that goal will also provide a boost to other companies involved with EU-SCORES. For those of you keeping score at home, that includes the offshore floating solar company Oceans of Energy along with the familiar names of RWE, EDP, ENEL Green Power, and Simply Blue Group.
EU-SCORES could also add another notch in the belt of green hydrogen fans. CorPower, for one, is already making the pitch.
“The multi-source demonstrations in EU-SCORES will showcase the benefits of more consistent power output harnessing complementary power sources including waves, wind and sun, creating a more resilient and stable power system, higher capacity factors and a lower total cost of the power system. These aspects will also improve the business case for green hydrogen production, by allowing electrolysers to run at higher utilisation,” CorPower enthuses.
For those of you new to the topic, electrolysis refers to electrical systems that pop hydrogen gas out of water. That doesn’t make any sense at all from a climate action perspective if the electricity is sourced from fossil energy, but sub in renewables and the whole picture shifts.
The renewable energy angle is also a rather significant improvement over the current state of affairs, in which the global supply of hydrogen is sourced primarily from natural gas and coal. With the addition of seagoing solar panels and wave energy devices envisioned by EU-SCORES, it looks like end of the fossil grip on the global hydrogen economy is in sight.
Follow me on Twitter @TinaMCasey.
Photo: Array of wave energy harvesting devices, courtesy of CorPower Ocean.
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The US virtual power plant (VPP) market is growing fast, with 37.5 gigawatts of behind-the-meter flexible capacity now online, according to a new Wood Mackenzie report. VPPs connect small energy systems and smart devices into a single network managed by an energy company or utility. That can include residential solar panels, battery storage, EVs, and smart thermostats. When the grid needs help during peak demand or emergencies, they can be tapped – and you get paid for participating.
Wood Mackenzie’s “2025 North America Virtual Power Plant Market” report shows that the market is expanding more broadly than deeply. The number of company deployments, unique buyers (offtakers), and market and utility programs each grew by more than 33% in the past year. But total capacity grew at a slower pace – just under 14%. “Utility program caps, capacity accreditation reforms, and market barriers have prevented capacity from growing as fast as market activity,” said Ben Hertz-Shargel, global head of grid edge at Wood Mackenzie.
Residential VPP customers are gaining ground
Residential customers are making a bigger dent in wholesale market capacity, increasing their share to 10.2% from 8.8% in 2024. But small customers still face roadblocks, mainly due to limits on data access for enrollment and market settlement.
Battery storage and EVs are also playing a bigger role. Deployments that include batteries or EVs now account for 61% as many as those that include smart thermostats, which have long dominated VPP programs.
Leading states and markets
California, Texas, New York, and Massachusetts are leading the pack, making up 37% of all VPP deployments. In wholesale markets, PJM (which manages the electric grid for 13 states and DC) and ERCOT (the Texas grid), both home to massive data center commitments, also have the highest disclosed VPP offtake capacity. “While data centers are the source of new load, there’s an enormous opportunity to tap VPPs as the new source of grid flexibility,” Hertz-Shargel said.
Offtake growth and new business models
The top 25 VPP offtakers each procured more than 100 megawatts this year. Over half of all offtakers expanded their deployments by at least 30% compared to last year. That’s fueling the rise of a new “independent distributed power producer” model, where companies aim to use grid service revenue and energy arbitrage to finance third-party-owned storage for electricity retailers.
Policy pushback
Not everyone is on board with how utilities are approaching distributed energy resources (DERs). Many VPP aggregators and software providers oppose utilities putting DERs into their rate base under the Distributed Capacity Procurement model.* “This model is seen as limiting access of private capital and aggregators from the DER market, rather than leveraging customer and third-party-owned resources,” Hertz-Shargel explained. He added that most wholesale market experts believe FERC Order 2222 was a missed opportunity and won’t significantly improve market access.
*I really like this model, personally. I leased two Tesla Powerwalls under Green Mountain Power’s Lease Energy Storage program in Vermont for $55 a month, and it’s an excellent VPP program that’s grown much more rapidly than other models, such as bring-your-own batteries.
Read more: California’s grid gets a record power assist from a 100k home battery fleet
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![The Kia EV4 GT may be the affordable electric sports car we've been waiting for [Video]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/06/Kia-EV4-GT-US.jpeg?resize=1200,628&quality=82&strip=all&ssl=1)
Kia is already giving its new electric sedan a sporty upgrade. The EV4 is due for the “GT” treatment, and we are getting a look at it up close. Is the Kia EV4 GT the affordable EV sports car we’ve been waiting for?
The Kia EV4 GT is coming as an affordable EV sports car
After opening orders for the EV4 in Europe and South Korea this year, we are learning that a new flagship model is about to join the lineup.
The EV4 is Kia’s first all-electric sedan. In Europe, it’s also offered as a hatchback, another first from the South Korean automaker.
Right off the bat, you can tell this is not your typical 4-door car. Kia calls the EV4 “an entirely new type of EV sedan. With a sporty, fastback silhouette and Kia’s bold new design, the EV4 basically looks like a sports car already.
The GT variant will take it to the next level. We’ve already seen a few camouflaged prototypes out in public testing, but a new video offers us our closest look at the EV4 GT.
Kia’s electric sports car was spotted in a parking lot in South Korea ahead of its big debut. The video from HealerTV reveals a few new details you can expect to see when the wraps finally come off.
One of the biggest differences from the current range-topping GT Line is up front. You can see the GT Line model features a horizontal bar design, while the sportier GT variant has a blanked-out design. Although they are covered, the EV4 GT is expected to arrive with a slightly more sporty headlight design.
From the rear, it looks about the same as the GT Line, but as you look closer, you can see upgraded diffusers under the rear tail lights.
Speaking of the taillights, they will also be upgraded with a sportier look, similar to the new EV6 GT. The lower part of the diffuser is expected to receive similar upgrades.
From the side, you can’t miss the signature GT-exclusive neon green brake callipers and wheels. The reporter pointed out that the tires are wider and thinner, which is expected of a sports car.
We will learn prices and official specs closer to its official debut, but it’s expected to start at around $50,000 to $55,000.
Like Kia’s other high-performance EVs, the EV4 GT is expected to feature an AWD dual-motor powertrain system. The new EV6 GT delivers 650 hp, good for a 0 to 62 mph acceleration in 3.5 seconds. Will the smaller electric sports car top it?
Kia will launch the EV4 in the US in early 2026, starting at around $35,000. It will arrive with an EPA-estimated driving range of 330 miles and a built-in NACS port for recharging at Tesla Superchargers. In Europe, the EV4 starts at about €35,000 ($41,000).
Would you take one over a Tesla Model 3 Performance? Or even a Porsche Taycan? Drop us a comment below and let us know which one you’re choosing.
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In the Electrek Podcast, we discuss the most popular news in the world of sustainable transport and energy. In this week’s episode, we discuss Tesla going all-in on Elon with his new comp package, Robotaxi crashes, Nissan killing Ariya, and more.
The show is live every Friday at 4 p.m. ET on Electrek’s YouTube channel.
As a reminder, we’ll have an accompanying post, like this one, on the site with an embedded link to the live stream. Head to the YouTube channel to get your questions and comments in.
After the show ends at around 5 p.m. ET, the video will be archived on YouTube and the audio on all your favorite podcast apps:
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