Bidirectional charging allows EV owners to use energy from their car batteries to power their homes or send the energy back to the grid. The innovative technology can save EV drivers money on utility costs while helping lower electricity demand during peak periods.
How bidirectional EV charging can bring down utility costs
EV drivers are quickly learning their cars are good for more than just zero-emission driving. Electric vehicles utilize powerful, compact batteries that can charge and discharge quickly and efficiently.
The ability to send energy back and forth from the vehicle to the grid (V2G) and vice versa is a significant benefit of owning an EV. If deployed properly, it can save utility customers money while protecting the US’s aging grid infrastructure.
Companies like PG&E and Duke Energy are launching programs aimed at studying the best ways to utilize this technology.
Duke Energy partnered with Ford F-150 Lightning owners in August to use the EV pickup’s powerful battery to supply energy during peak hours, lowering grid intensity and savings across the network.
PG&E is initiating a program of its own to test bidirectional EV charging for homes, for businesses, and with local microgrids.
PG&E launches V2X pilot to test EVs as mobile batteries
Pacific Gas and Electric Company (PG&E) is rolling out three new Vehicle-to-Everything (V2X) pilot programs to determine the best practices to maximize bidirectional EV charging benefits for consumers and the grid.
In a press release Tuesday, PG&E invited customers to participate in a pre-enrollment for its new V2X program.
The plan involves allowing EV drivers to utilize their vehicle’s battery, leveraging it to earn money and offset energy use when demand is the highest. Participation involves:
Powering your property temporarily when there’s an outage.
Charging your vehicle during times with less demand while using the EVs power when energy during peak hours (4 p.m. to 9 p.m.).
Earning additional revenue incentives from sending energy back to the grid during high-demand periods.
Users will earn an upfront payment and performance-based incentives for participating in the V2X program. Enrollment in PG&E’s Emergency Load Reduction Program can provide additional savings, which can help offset the costs of buying and installing a bidirectional EV charger.
The incentives include:
V2X Residential
Up to $2,500 upfront ($3,000 for customers in disadvantaged communities).
Up to $2,175 additional for providing stored energy to the grid in times of high demand through auto-enrollment in the ELRP demand response program.
V2X Commercial
Up to $2,500 upfront ($3,000 for customers in disadvantaged communities) for installing a three-phase bidirectional charger less than 50 kW.
Up to $3,625 additional for providing stored energy to the grid in times of high demand through auto-enrollment in the ELRP demand response program.
Up to $4,500 upfront ($5,000 for customers in disadvantaged communities) for installing a three-phase bidirectional charger greater than or equal to 50 kW.
Up to $3,625 additional for providing stored energy to the grid in times of high demand through auto-enrollment in the ELRP demand response program.
V2X Microgrids
Up to $3,750 for providing stored energy to the grid in times of high demand through auto-enrollment in the ELRP demand response program.
Can stack incentives with V2X Residential or Commercial
Currently, the only EV to qualify is the Ford F-150 Lightning. However, EVs based on the Hyundai Motor Group’s E-GMP platform, including the Hyundai IONIQ5, Kia EV6, and Genesis GV60, are expected to be eligible between 2023 to 2024, followed by VW ID.4 (2023-2024), Porsche Taycan (2024), GM Silverado (2024), Volvo EX90 (2024-2025), and Polestar 3 (2025).
Electrek’s Take
Bidirectional charging can play a critical role in transitioning to a green energy economy. The rising frequency of extreme weather events is testing the aging US grid infrastructure, simultaneously increasing energy demand while limiting the ability to generate it.
One way to solve this is by implementing widespread renewable energy like wind and solar, but this will take time to deploy.
In the meantime, electric vehicles can play an integral role. EVs with bidirectional charging capabilities can help reduce stress on the grid during peak demand hours while saving on utility costs.
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Earlier this month, California enacted new regulations for electric bikes that resulted in stricter speed limits on e-bikes with throttles. At the time, it was unclear how electric bike makers would respond to the new regulations, but we’re now starting to see at least one manufacturer pushing to bring its existing e-bikes owned by California residents into compliance.
The new laws remove ambiguity in the Class 2/Class 3 e-bike categorization. Formerly, many e-bikes were designed to operate in either category depending on the owner’s desires. Such bikes could operate as Class 2 e-bikes reaching max speeds of 20 mph (32 km/h) with a throttle, or as Class 3 e-bikes reaching higher speeds of 28 mph (45 km/h) on pedal assist-only.
In fact, the overwhelming majority of Class 3 e-bikes sold in the US used this design, offering hybrid compliance for functionality as both Class 2 and Class 3 e-bikes.
After California’s new laws removed any ambiguity between the classes, it is now clear that e-bikes in the state will need to function either only as Class 2 e-bikes (throttle up to 20 mph) OR Class 3 e-bikes (up to 28 mph but without any throttle).
It was unclear whether existing e-bikes already sold prior to the law’s enactment would receive an exemption, but bicycle manufacturer Specialized doesn’t seem to be taking any chances.
Specialized is the maker of the Globe line of cargo e-bikes, and recently sent out an update to owners that would help them bring their e-bikes into compliance with California’s new stricter regulations.
Like so many other electric bikes on the market, the Globe e-bikes came with throttles allowing 20 mph speeds without pedaling, but could also reach up to 28 mph on pedal assist.
A new firmware update promoted by the company will essentially restrict its e-bikes to purely Class 2 operation, removing the motor’s ability to assist the bike in going any faster, even when pedaling without throttle operation.
The update will also come with a Class 2 compliance sticker that replaces the previous Class 3 sticker.
To install the voluntary update, Globe owners are encouraged to visit their local Specialized dealer.
A copy of the update letter was shared on Reddit and can be seen below.
Electrek’s Take
This is an interesting approach, because it indicates an understanding by Specialized that it is responsible for any of its e-bikes already on the road that have now been made non-compliant by the new law.
There are basically two main options to “fix” these previously hybrid Class 2/3 e-bikes and bring them into compliance. One is to unplug and remove the throttle, turning the bike into a true Class 3 e-bike under CA regulations. The other is to remove the ability for the motor to assist at speeds over 20 mph, turning it into a Class 2 e-bike. That latter is what Specialized appears to have decided to go with, and it makes sense to me. If you asked most owners of these e-bikes about which they’d give up if they had to, they’d probably tell you “take my 21-28 mph speed but leave me my throttle”. Throttles are simply such a major part of e-bikes in North America that most riders would give up the whole bike if they were forced to give up the throttle.
The bigger question here is how many Globe riders will actually install this update. Since you need to not only opt-in to it, but also physically visit a dealer to do it, I have to imagine that the vast majority of riders will simply ignore the update altogether, keeping their faster non-compliant speed on an e-bike with a throttle. I’m not saying that’s the right thing to do, but I am saying it’s what will happen in the real world.
And if we are being honest, these Globes aren’t even the e-bikes that are at the heart of the issue. Most CA residents are more concerned with teenagers ripping down sidewalks on moped-style e-bikes, not the local moms and dads riding to Trader Joe’s on their sensible, upscale cargo e-bikes that just happen to have hybrid Class 2/3 performance.
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Wind energy powered 20% of all electricity consumed in Europe (19% in the EU) in 2024, and the EU has set a goal to grow this share to 34% by 2030 and more than 50% by 2050.
To stay on track, the EU needs to install 30 GW of new wind farms annually, but it only managed 13 GW in 2024 – 11.4 GW onshore and 1.4 GW offshore. This is what’s holding the EU back from achieving its wind growth goals.
Three big problems holding Europe’s wind power back
Europe’s wind power growth is stalling for three key reasons:
Permitting delays. Many governments haven’t implemented the EU’s new permitting rules, making it harder for projects to move forward.
Grid connection bottlenecks. Over 500 GW(!) of potential wind capacity is stuck in grid connection queues.
Slow electrification. Europe’s economy isn’t electrifying fast enough to drive demand for more renewable energy.
Brussels-based trade association WindEurope CEO Giles Dickson summed it up: “The EU must urgently tackle all three problems. More wind means cheaper power, which means increased competitiveness.”
Permitting: Germany sets the standard
Permitting remains a massive roadblock, despite new EU rules aimed at streamlining the process. In fact, the situation worsened in 2024 in many countries. The bright spot? Germany. By embracing the EU’s permitting rules — with measures like binding deadlines and treating wind energy as a public interest priority — Germany approved a record 15 GW of new onshore wind in 2024. That’s seven times more than five years ago.
If other governments follow Germany’s lead, Europe could unlock the full potential of wind energy and bolster energy security.
Grid connections: a growing crisis
Access to the electricity grid is now the biggest obstacle to deploying wind energy. And it’s not just about long queues — Europe’s grid infrastructure isn’t expanding fast enough to keep up with demand. A glaring example is Germany’s 900-megawatt (MW) Borkum Riffgrund 3 offshore wind farm. The turbines are ready to go, but the grid connection won’t be in place until 2026.
This issue isn’t isolated. Governments need to accelerate grid expansion if they’re serious about meeting renewable energy targets.
Electrification: falling behind
Wind energy’s growth is also tied to how quickly Europe electrifies its economy. Right now, electricity accounts for just 23% of the EU’s total energy consumption. That needs to jump to 61% by 2050 to align with climate goals. However, electrification efforts in key sectors like transportation, heating, and industry are moving too slowly.
European Commission president Ursula von der Leyen has tasked Energy Commissioner Dan Jørgensen with crafting an Electrification Action Plan. That can’t come soon enough.
More wind farms awarded, but challenges persist
On a positive note, governments across Europe awarded a record 37 GW of new wind capacity (29 GW in the EU) in 2024. But without faster permitting, better grid connections, and increased electrification, these awards won’t translate into the clean energy-producing wind farms Europe desperately needs.
Investments and corporate interest
Investments in wind energy totaled €31 billion in 2024, financing 19 GW of new capacity. While onshore wind investments remained strong at €24 billion, offshore wind funding saw a dip. Final investment decisions for offshore projects remain challenging due to slow permitting and grid delays.
Corporate consumers continue to show strong interest in wind energy. Half of all electricity contracted under Power Purchase Agreements (PPAs) in 2024 was wind. Dedicated wind PPAs were 4 GW out of a total of 12 GW of renewable PPAs.
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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 the official unveiling of the new Tesla Model Y, Mazda 6e, Aptera solar car production-intent, and more.
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