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299 The Sam Clarke Episode

299 The Sam Clarke Episode

The EV Musings Podcast May 31, 2026 58 min
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About this episode

Sam Clarke joins the EV Musings Podcast, with the hosts clarifying he’s speaking personally (not as an official GridServe representative) and using examples like “the Luton airport fire” to frame how EV misinformation spreads. The conversation then pivots to charging economics: why UK truck charging can be expensive, how roaming and grid constraints shape rollout, and how utilization, membership, and pricing models affect pence-per-kWh. They also dig into interoperability (plug-and-charge vs auto charge), app data, and UK EV policy uncertainty.

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Technical Too Afraid to Ask
Term

EHGVs

"and say, look, you give these kind of discounts because EHGVs are going to take a large amount of energy a number of times in a day or a week."

EHGVs means electric trucks (big commercial vehicles). They use a lot of electricity when they charge, so they can strongly affect how charging networks plan capacity.

Term

capacity demand

"demand, capacity demand by grouping together 10,000, a big fleet of 10,000, not necessarily a fleet fleet, but maybe individuals who've grouped together."

“Capacity demand” refers to how much electrical capacity a charging network needs to provide to meet charging demand. In practice, it’s about planning grid and charger capability so many vehicles can charge without bottlenecks.

Brand

Voltloader

"Indeed, it's already happening. I can give you one example straight away, which is Voltloader. Voltloader will always have a place in my heart as an EV electric heavy goods vehicle only haulier."

Voltloader is a company that runs logistics using electric trucks. The host uses it as an example of a real-world case where fully electric freight operations are already happening.

Term

depo charging

"They've got depo charging at their depots, they've got depo charging at their clients depots, and they are consolidating that opportunity"

Depot charging means charging vehicles at the company’s own location (like a yard or depot). Fleet operators like it because it’s scheduled and convenient.

Term

consortium

"That enables them to, as a collective, almost have their own little consortium of users, which means as an enterprise, we see one customer that's consuming quite a lot"

A consortium here means a group of customers working together. By combining their charging needs, they can get better access or terms than they would individually.

Brand

Gridsur

"You know, Gridsur is very fortunate of being the busiest network in the country, and I know you're going to come to this later, but we are incredibly"

Gridsur is mentioned as a charging network that’s already very busy. The host is comparing it to a less-used network to explain why usage matters.

Term

motorway service areas

"lucky to have such a prolific network on the motorway service areas, and we've now got an underutilised network, knowingly and predictably, that sits right next to it in the same location as"

Motorway service areas are the highway rest stops. They’re important for EV charging because they’re convenient places to top up during long trips.

Place

M1

"And that's given me a nice little segue to move on to the M1. Now, I did an episode a couple of weeks ago about the Strategic Road Network, and I focused on the M1..."

The M1 is one of the UK’s main highways. The hosts use it as an example route to talk about where EV charging can get enough electricity and how that changes from one service area to another.

Term

Strategic Road Network

"I did an episode a couple of weeks ago about the Strategic Road Network, and I focused on the M1..."

The Strategic Road Network (SRN) is the UK’s set of major roads managed at a national level, including many motorways. The host references it to frame why EV charging planning on routes like the M1 is a structured, corridor-wide problem rather than isolated locations.

Term

grid capability

"grid capability is largely predicated on where the source of that energy is coming from..."

Grid capability is basically how much electricity the local power network can provide. If the nearest power equipment is far away (or on the other side of the motorway), it can be harder and more complex to install enough charging power.

Term

substation

"that line of sight to the nearest substation or the nearest main power station is miles and miles away..."

A substation is a power facility that helps deliver electricity from the main grid to local areas. If the nearest one is far away, it’s harder to bring lots of power to EV chargers.

Term

biodiversity net gain

"We've particularly seen in the HDB market, we've had to do a lot of biodiversity net gain, for example, where we've taken away some grasslands in order to put charging in..."

Biodiversity net gain means a project should improve nature overall, not just avoid damage. If building EV charging removes some habitat (like grassland), the developer has to replace it—often with more habitat than before.

Term

grid enablements

"And that's commonplace, and it's taking a long time for some of those grid enablements to be [808.0s] energised as well."

Grid enablements are the power-grid work that has to happen before a charging site can actually get enough electricity and start operating.

Topic

M1 charges

"I did a fairly detailed analysis of all the M1 charges out there, and our good friends at ZAP Map gave me some utilisation figures. [836.4s] I kind of want to talk a little bit about utilisation and the first mover advantage."

They’re talking about EV charging along the M1 motorway and how different charging companies compare there.

Term

utilisation

"I did a fairly detailed analysis of all the M1 charges out there, and our good friends at ZAP Map gave me some utilisation figures. [836.4s] I kind of want to talk a little bit about utilisation and the first mover advantage."

Utilisation just means how busy the charging stations are—how often people actually plug in compared with how many chargers are available.

Concept

first mover advantage

"I kind of want to talk a little bit about utilisation and the first mover advantage. So, [842.6s] as I say, I got data from ZAP Map that showed me all the CPOs that were present on the M1, [851.5s] and it indicated that Apple Green, for example, have way more actual charges up the M1 corridor than, say, GridServe."

First mover advantage means the first company to get into a market can benefit from being known and trusted, so more people use it—before others catch up.

Term

CPOs

"as I say, I got data from ZAP Map that showed me all the CPOs that were present on the M1, [851.5s] and it indicated that Apple Green, for example, have way more actual charges up the M1 corridor than, say, GridServe."

CPOs are the companies that run the charging stations—basically, who you’re charging with when you plug in.

Term

co-locate

"Sometimes we co-locate as well. Yeah, I think there is a degree of brand [909.0s] loyalty, perhaps."

Co-locate means putting chargers from different companies in the same place, so drivers can choose among them without leaving the site.

Term

dwell time

"Our reliability has improved dramatically. Going up, the dwell time is going [935.1s] down, there's more and more charges per site, per location. All those things are positives,"

Dwell time is how long cars stay at the charger. If it goes down, it usually means the station is turning cars over more quickly.

Term

time of day pricing

"there's membership or subscription models or off-peak incentives or time of day pricing, congestion [1080.9s] pricing, membership, discounts, dynamic pricing."

It means the price changes depending on what time you charge. Charging during cheaper hours can cost less than charging at busy times.

Term

congestion pricing

"or time of day pricing, congestion [1080.9s] pricing, membership, discounts, dynamic pricing."

If lots of people are trying to charge at the same time, the price can be higher. The idea is to spread charging out so chargers aren’t overloaded.

Term

off-peak incentives

"there's membership or subscription models or off-peak incentives or time of day pricing, congestion [1080.9s] pricing, membership, discounts, dynamic pricing."

These are deals for charging when fewer people are using electricity. It’s usually cheaper than charging during the busiest times.

Term

dynamic pricing

"pricing, membership, discounts, dynamic pricing. There's a multitude of different ways which we [1085.8s] can probably be creative in the way that we address pricing going forwards that enables an"

Dynamic pricing means the charging cost can go up or down. It depends on what’s happening with electricity demand and availability.

Car

Dodge Charger

"...think, CPOs in the UK, lots and lots of different charger types, lots of different types of user experience..."

The Dodge Charger is a car that’s built for strong performance and a sporty feel. When people talk about charging “types” and user experience, they’re usually talking about how easy it is to charge a car depending on where you are and what charging equipment is available. The Charger may be mentioned because it’s a common model people own and want to charge or maintain easily.

Term

kilowatt hour

"reduce that disparity a little bit between your seven [1135.4s] pence a kilowatt hour on octopus overnight versus your, I think it's InstaVolt you're [1140.2s] referring to that's now in the mid-90s"

A kilowatt-hour (kWh) is the amount of electricity you get when you charge. Charging prices are often quoted as a cost per kWh.

Term

utilization

"One of the ways when I speak to charge point operators, they always talk about the utilization aspect. If we can double the utilization or triple the [1155.3s] utilization, then it will bring the overall price down"

Utilization is how often chargers are being used. If more people use them, the operator can spread the costs out and charge less per unit of electricity.

Term

fixed base price

"it relates to the fixed base that has to be covered. We are saying whether you sell one kilowatt [1165.1s] hour or one gigawatt hour, you're still paying the same amount of fixed price."

It’s the part of the cost that you pay even if you don’t sell much electricity. If chargers aren’t used much, that cost has to be divided among fewer kWh, so each kWh costs more.

Car

Tesla Model

"...he wider network. Meanwhile, selling or being the Tesla Model Y, being the most popular car in the world for se..."

The Tesla Model Y is an electric SUV, meaning it runs on electricity instead of gasoline. Because it’s very popular, it’s often used as an example when people talk about how charging works in real life. The main point is that many drivers depend on charging stations to keep it running day to day.

Term

public charging pricing review

"going to be doing a public charging pricing review this year, I believe, or working with companies like Charge UK to try and determine what they can do to reduce the price of public charging."

It’s a government check on how much it costs to charge an EV at public chargers. They look for ways to make those prices lower for drivers.

Company

Charge UK

"working with companies like Charge UK to try and determine what they can do to reduce the price of public charging."

Charge UK is a UK group connected to EV charging businesses. Here, it’s mentioned as someone the government could work with to try to lower charging prices.

Term

grant funding

"We've obviously got elements of grant funding through, particularly in the commercial sector, through the depot schemes and the Z-HID trials, the HGV trials of putting vehicles on the ground and the infrastructure being subsidized to do so."

Grant funding is financial help from the government that you don’t have to pay back. It can be used to help build EV charging infrastructure and make it cheaper to roll out.

Term

depot schemes

"particularly in the commercial sector, through the depot schemes and the Z-HID trials, the HGV trials of putting vehicles on the ground and the infrastructure being subsidized to do so."

Depot schemes are programs that help fleets install chargers where their vehicles are kept. That can make charging more predictable and often cheaper than relying only on public chargers.

Term

Z-HID trials

"through the depot schemes and the Z-HID trials, the HGV trials of putting vehicles on the ground and the infrastructure being subsidized to do so."

Z-HID trials are a named pilot project that tests and supports EV charging infrastructure. The idea is to learn what works and help get charging rolled out faster.

Term

HGV trials

"the Z-HID trials, the HGV trials of putting vehicles on the ground and the infrastructure being subsidized to do so."

HGV trials are tests for electric heavy trucks. They help figure out how to charge bigger vehicles and what infrastructure is needed for them to work reliably.

Term

regulatory intervention

"to try and be a catalyst for change, then hopefully, and maybe some regulatory intervention to help grid and things like that be a smoother process, then maybe they're the leavers that were within the government's power to help us along the way."

Regulatory intervention means the government stepping in with rules or oversight. Here it’s suggested as a way to reduce friction and delays when building EV charging infrastructure.

Company

octopus

"I was at the an Earthset meeting at the octopus hay quarters a couple of weeks ago, and the panel there were talking about some of the government regulatory things that they can do."

Octopus is a company involved in energy. Here it’s mentioned because the speaker attended a meeting at their offices.

Term

auto charge

"So what a number of ChargePoint operators have done is switch on auto charge. Now, the problem I have with that is that it doesn't work on all cars, it doesn't work on all charges, and it can be confusing for customers."

Auto charge is when the charging network learns your car’s identity once, so later charging can start and be billed automatically. If you use a different charging network, you may need to set it up again.

Term

plug and charge

"I do want to talk about plug and charge versus auto charge now. Now, a refrain I've heard from a number of ChargePoint operators is that plug and charge has a problem in that it doesn't work on all cars, it doesn't work on all charges, it can be confusing for customers."

Plug and charge lets you start charging just by plugging in. The car and charger figure out who you are and handle the payment automatically, so you don’t have to tap a card every time.

Brand

FastNed

"Especially if, for example, they've set up auto charge with FastNed and they take the same car with the same attached payment method to Osprey to use their plug and charge..."

FastNed is a charging network. The host is saying that if you set up auto charging with one network, it might not carry over automatically to other networks.

Brand

Osprey

"Especially if, for example, they've set up auto charge with FastNed and they take the same car with the same attached payment method to Osprey to use their plug and charge..."

Osprey is a charging network. The host is explaining that your car’s charging setup may not work the same way when you switch to a different network.

Brand

GridServe

"And then they go to GridServe who've set up auto charge and they have to set it up there again."

GridServe is another place you can charge. The host’s point is that even if your car is set up on one network, you may have to set it up again on GridServe.

Term

MAC address

"So auto charge is the element by which you or we as a CPO learn the MAC address effectively, the unique identifier of the vehicle such that the next subsequent charges are, we recognize when something plugs in..."

A MAC address is like a unique ID for a device on a network. In EV charging, it can help the charger system recognize your car so it knows which account to bill.

Term

certificate

"the vehicle where there's various certificate straps, the chain, which all communicate with each [1827.2s] other."

A certificate here is like a digital ID. It helps the charging system confirm that your car is allowed to charge, without you having to manually start or verify everything.

Concept

legacy vehicles

"Auto charge is good because it covers legacy vehicles. So most of the vehicles already in [1846.5s] the public domain can be enabled that way."

Legacy vehicles are older EVs. They may not have the newer technology needed for the most automated charging methods, so different solutions are used to make them charge reliably.

Concept

joined up thinking

"the problem that you've already [1860.6s] mentioned is that there is not necessarily joined up thinking with different charge [1863.8s] and operators, different hardware providers, different vehicles."

The host is pointing out an interoperability problem: different charging operators, hardware providers, and vehicle generations don’t always implement the same standards end-to-end. That lack of alignment can prevent plug-and-charge-style automation from working seamlessly.

Concept

consistency in terms of the way in which that is engineered

"We've just got to get to a consistency in [1873.2s] terms of the way in which that is engineered in the marketplace such that it works seamlessly"

They want the charging tech to be built the same way across brands and networks. If it isn’t, plugging in might work smoothly in one place but not in another.

Term

apps

"which is probably a digital one, probably the apps that [1886.8s] just need to make life simple."

Charging apps are the phone software you use to start and pay for charging. The idea here is that, eventually, the app experience could be so simple that it feels the same no matter where you charge.

Term

contactless

"So if you haven't got plug and charge, you've still got your contactless and all your roaming card."

Contactless charging means you can start charging by tapping a payment card on the charger. It’s a way to pay without needing to open an app first.

Term

roaming card

"So if you haven't got plug and charge, you've still got your contactless and all your roaming card."

A roaming card is like a “travel pass” for EV charging. It lets you pay at different charging networks, not just the one you normally use.

Concept

owning the customer charging experience

"But he does break me on to my next point, which is this whole concept of owning the customer charging experience. And there's a general feeling amongst ChargePoint operators that they want to own this experience."

This concept describes charging operators trying to control the end-to-end user journey—how you start, authenticate, and manage a session. In practice, it often means steering users toward a particular operator’s app rather than relying on universal methods like plug-and-charge or roaming.

Term

CPO app

"forcing or guiding the customer into using a particular CPO app. And now we've already mentioned the fact that there's, you know, 150 ChargePoint operators."

A CPO app is the charging company’s app. It’s how you often start charging, track sessions, and sometimes get better pricing—depending on the operator.

Term

ChargePoint operators

"And now we've already mentioned the fact that there's, you know, 150 ChargePoint operators."

ChargePoint operators are the companies that run the public charging stations. They decide how you pay and often what app or card works best at their chargers.

Term

charge curves

"the amount of charge that they're putting in when they're charging, charge rate, the charge curves, all that sort of stuff."

Charge curves are basically the “charging speed over time” graph. As the battery fills up, the car usually charges more slowly, and that pattern is what the curve shows.

Brand

Apple Green Electric

"You can collect points for free charging, things like that, Apple Green Electric offer discounts via their app."

Apple Green Electric is an EV charging company. Here it’s used as an example of a charger network that offers discounts through its app.

Brand

BP Pulse

"But some apps give no financial benefit despite tracking your data and usage. BP Pulse, for example, Gridserve, for example, the ad price"

BP Pulse is a charging network brand. The host is saying that some of these apps may track what you do, but don’t necessarily give you discounts for using them.

Term

uptime

"Yeah. I want to come back on a discussion that occurred [2358.2s] on the Evie Cafe News recently, a couple of weeks ago. The discussion was about measuring up time [2363.1s] and you quite rightly talked about the area of variables that all have to work all the time [2368.4s] to provide a charge."

Uptime just means how often the charger actually works. If uptime is high, you’re less likely to show up and find the station broken or refusing to start.

Car

Ford Mustang Mach-E

"How do you account for that? How do you account for the fact that I can go up [2412.8s] at any time of the day or night, plug my post star in on the supercharger, get the app out, [2418.3s] and it will work. And I can't necessarily do that with any other charge point operator. [2425.8s] I'm reminded by an interview with, I think it might have been one of the most senior people [2430.9s] at Ford a few years ago talking about the build of their Mustang Mach-E and the fact that there"

The Ford Mustang Mach-E is Ford’s electric car. The host brings it up to illustrate how the way an EV is built and connected to charging/payment systems can affect whether things work reliably.

Car

Ford Mustang

"... a few years ago talking about the build of their Mustang Mach-E and the fact that there was something like..."

The Ford Mustang is a sports car model that’s been around for a long time. The Mustang Mach-E is the electric version, and it’s often discussed in terms of how it’s put together and what it feels like to own. The podcast likely brings it up because people care about build quality and day-to-day experience.

Term

benefiting kind tax

"And so my benefiting kind tax went from about 20 pounds a month to about 400. But that also showed me if I never would I have a Porsche 911 as a company car..."

Benefit-in-kind tax is the UK tax you pay when your employer gives you something valuable instead of cash—like a company car. If the tax system treats your electric car like it’s a petrol car, your monthly tax bill can jump a lot.

Car

Porsche 911

"... also showed me if I never would I have a Porsche 911 as a company car, but if I did, I'd be paying a d..."

The Porsche 911 is a sports car known for performance and handling. People often talk about it in terms of cost because owning one can be expensive, especially with taxes or company-car rules. In the podcast, it’s likely mentioned to illustrate how much a premium car can affect your budget.

Term

VED

"For example, my 25-year-old nephew who's just bought a 27-year-old Ford Escort, 1.6 litre, and he's paying less VED than I am on an electric car."

VED is the UK road tax you pay for keeping a vehicle on the road. The host is saying an older petrol car can end up paying less VED than an electric car, even though the petrol car emits exhaust.

Term

bandings

"But that speaks to an issue with the bandings by which things are priced at. So you've not quite answered my question back to you..."

Bandings are the tax “brackets” that decide how much you pay based on your car’s details. The host thinks the problem is which bracket EVs and older petrol cars end up in—not the idea of taxing them.

Term

emissions rating

"It's just that that 27-year-old car needs to be taxed fairly relative to your modern electric car that has a completely different emissions rating."

An emissions rating is a number that describes how much pollution a vehicle produces. The host’s point is that EVs should be taxed using EV-appropriate emissions information, not treated like petrol cars.

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