Allye Energy

Allye Energy An energy ally to the grid, consumers and the planet

897 charging sessions. 126 MWh delivered.Twenty-tonne electric excavators on the UK's flagship infrastructure project. N...
07/10/2026

897 charging sessions. 126 MWh delivered.

Twenty-tonne electric excavators on the UK's flagship infrastructure project. No grid connection. No diesel generator.

Lower Thames Crossing wants around 130 zero-emission machines working by 2028. The plant is solved. The charging isn't.

Since January, Allye MAX500s have charged 20-tonne electric excavators on the Bouygues Murphy JV site. Volvo, SANY and LiuGong machines, topped up at 240kW DC between shifts, working alongside GeoPura’s green hydrogen.

No grid connection. No diesel generator.

Diesel is muscle memory. The bowser turns up, the tank fills, nobody thinks about it. Electric plant asks a site team to plan energy the way they plan concrete. That is a habit change, not an engineering one.

So we’ve logged everything. Every session, every fault, every workaround, every question asked on the ground. Nine months of it.

This spring, government named energy infrastructure as one of four sectors where public money should back British industry. In the minister’s words, “it matters where things are made and who makes them.”

A British road, paid for by British taxpayers, partly charged by batteries that first drove on British roads.

So here’s the question for the next 120 machines: will the energy behind them be built here, or shipped in?

Congratulations to the Lower Thames Crossing and BOUYGUES UK and Murphy JV teams. Pathfinder projects are hard, and this one is working.

If you run electric plant and the power isn’t where the work is, the carousel shows how we do it.

National Highways Bouygues Construction Volvo Construction Equipment @

£2 a litre.Diesel passed it this week for the first time. The previous record of 199.09p had stood since June 2022.If yo...
05/10/2026

£2 a litre.

Diesel passed it this week for the first time. The previous record of 199.09p had stood since June 2022.

If you run a generator, that's not a headline. It's an invoice.

A typical tank now costs around £110, nearly £32 more than in late February. Hauliers say they're paying an extra £250 a week per vehicle. With roughly 30% of UK diesel imported from the US, nobody can tell you where the price goes next.

Our customers stopped trying to guess. They cut their run hours instead:
→ Construction: Horizon Plant runs cranes on 70% less fuel
→ Infrastructure: four MAX500s power the Lower Thames Crossing without a grid connection, saving over £30k a week
→ Film and TV: OnBio cut generator fuel by 70% with a hybrid setup
→ Fleets: J&M Murdoch runs DC fast charging from a 32A supply

All of those savings were measured before diesel hit £2, so they're worth more this morning.

Every litre you don't burn is a price rise you don't pay.

What would you cut first: the run hours, the fuel bill, or the generator itself?

£30,000 an hour. That's what a supermarket loses when the freezers warm up. Most major supermarkets either have a diesel...
22/09/2026

£30,000 an hour.

That's what a supermarket loses when the freezers warm up.

Most major supermarkets either have a diesel genset round the back or one on standby for deployment in under an hour (the image is Sainbury’s South Ruislip store). They have to be maintained, serviced, and refuelled. Producing absolutely nothing.

An asset that exists to protect against a failure that might never come.

Here's what almost nobody in retail energy procurement is actually calculating:

Every diesel genset behind a supermarket is a stranded asset. It costs money to keep. It generates nothing. It's the accounting equivalent of parking a Range Rover outside every store, engine running on standby, in case one of the delivery vans breaks down.

Behind-the-meter batteries in our own supermarket case study are earning £37,000 in six months from grid-services revenue alone. Before diesel is displaced. Before freezer downtime is avoided. Before delivery EVs plug in overnight.

Same footprint. Two jobs. One asset that pays. One asset that costs.

Non-domestic electricity rose 6.4% year-on-year in 2025. Rising again in 2026. And every store in the estate is still paying to maintain a diesel that hopefully never turns on.

Standby diesel made sense when batteries cost 10x more and grid services didn't exist. Neither of those is true anymore.

The question isn't "should we have backup?" It's "why is the CFO still signing off backup as a cost centre?"

By 2030, the supermarket estates still on diesel resilience will be running the losing operating model in retail.

If you're a supermarket ops director defending a maintenance line for a genset that hasn't started in three years — how do you take that to the next board?

Ten years for a grid connection. That's what UK data centre developers are now being told. OpenAI publicly paused Starga...
15/09/2026

Ten years for a grid connection.

That's what UK data centre developers are now being told.

OpenAI publicly paused Stargate UK. Their stated reason: UK power costs, four times higher than the US.

Ireland's data centre moratorium redirected €7.8 billion of pipeline investment - to markets that could actually plug the racks in.

The UK connection queue surged from 41GW in November 2024 to 125GW by June 2025. Three times national peak demand. Sitting in a queue.

The villain isn't AI. It's the assumption that the grid we built for coal will power the next industrial revolution.

Dublin's new rule: no large new connection without on-site dispatchable power at 80% of demand. Data centres are being told to become grid infrastructure, not just consumers of it.

We talk about AI Growth Zones but Britain won't be in the AI race with current power costs and connection queues.

Battery energy storage is the only tool that scales in the timeline that matters. Modular. Deployable in weeks. Dispatchable at the grid's request. Revenue-generating when idle.

The question isn't whether Britain builds AI infrastructure. It's whether the AI infrastructure Britain builds is British - or built somewhere else and rented back.

Link in first comment.

8 hours.That's the notice your business will get before the lights go out. For the first time in Britain's history, the ...
08/09/2026

8 hours.

That's the notice your business will get before the lights go out.

For the first time in Britain's history, the grid operator can now order rolling three-hour blackouts across the country - without needing government approval.

The rule came into effect on 14 August 2026. This isn't your typical The Telegraph rage-bait story, but covered on every mainstream outlet in the country now runs the same headline - even the Guardian and Independent (if that's your preferred read) - Blackout Britain.

Britain now has three escalating tools for switching the lights off:

→ NESO can disconnect 20% of power in 5 minutes to prevent grid collapse.
→ NESO can now trigger 3-hour rolling blackouts with 8 hours' notice - no ministerial sign-off required.
→ The Electricity Supply Emergency Code - still active, still never invoked - can ration up to 90% of demand in a prolonged crisis.

Only one of the three is new. It's the first that doesn't need a politician's approval.

The near-misses are already costing real money to every consumer on their bill, but the cost of a blackout could be even greater - particularly to the economy and businesses.

Now scale it to a country that actually goes dark.

Spain, 28 April 2025: €400 million lost in ten hours. 60 million people. Traffic lights dead. Hospitals on generators. Payment systems down. Trains stopped between stations. Not a cyberattack. Not renewables. A voltage collapse across a transmission network built for one-way power flow from big fossil plants - running today's decentralised, renewable-heavy system.

The same architectural problem Britain is running now.

Most UK businesses don't have a plan. Some do, but handle it with a diesel genset. MOT'd. Refuelled monthly. Producing absolutely nothing until the day it does - if it starts. That footprint could instead be a battery. Earning grid-services revenue every day. Stepping in the second the mains fails. Same footprint. Two jobs.

Link in first comment.

Four levers.That's what Boston Consulting Group (BCG) named this week as the way to unlock 14 gigawatts of new UK data c...
01/09/2026

Four levers.

That's what Boston Consulting Group (BCG) named this week as the way to unlock 14 gigawatts of new UK data centre demand - and cut £35 off every household's electricity bill by 2035.

Every one of them describes what an Allye MAX does.

⚡ One: trade flexibility for an earlier connection. Curtail when the grid asks, run when the site needs. Our MAX range is designed for exactly this.

🏭 Two: unlock a market for powered land. Turn brownfield and constrained sites into viable ones without a full grid upgrade. An Allye BESS makes any site a powered site.

🔋 Three: let developers self-build. Skip the DNO queue by installing your own bridging infrastructure. Our units are grant-eligible, drop-and-go, deployable in hours.

Four: behind-the-meter power as a bridge to full grid capacity. Connect today, upgrade over time. This is the mechanism. It's why we built Allye.

The counter-intuitive maths in the BCG paper is now the mainstream consulting view: Britain's electricity bill won't fall until Britain uses more of it.

And Britain can't use more of it without batteries in the ground shaping the demand.

Every constrained site is a candidate. Data centres. Depots. Factories. Farms. Retail estates.

We've been building the exact bridge BCG describes since 2021. It's on the market. It's grant-eligible. It's in the field with J & M MURDOCH & SON LTD, Collins Earthworks Limited, Roadchef, JLR, Film and TV Services, Afanti Media Ltd and OnBio among others.

If a DNO has told you a decade for a connection — the bridge is already built.
Talk to us.

Data Centers and 18%.That’s the average amount of grid capacity a UK data centre actually uses of the connection it paid...
18/08/2026

Data Centers and 18%.

That’s the average amount of grid capacity a UK data centre actually uses of the connection it paid for.

Research from freight infrastructure body TwentyForty, analysing five million half-hourly meter readings across 96 data centres on UK Power Networks' grid. The typical site drew 18% of what it had booked. Over three years.

Meanwhile freight depots wanting to charge electric trucks - mostly overnight, when the network is empty - are waiting years in a queue that's ordered by paper reservation, not real use.

The queue isn't waiting on the wires. It's waiting on the accounting.

Almost nobody seems willing to call it out. We are handing electricity capacity to whoever asks for it first, not to whoever will actually use it.

The result is predictable. Diesel trucks stay on the road for another decade because the depot that ordered them can't get 500kW at 3am. Electric HGVs sit in factory yards waiting for someone in Ashford to get a connection date. A data centre in Slough uses 18% of a 20MW allocation and holds the rest just in case.

The grid isn't full. The queue is.

TwentyForty's report calls for flexible connections, freight in the strategic-priority criteria, and a statutory right for tenants to install charging where they fund it. All sensible. All years away.

Behind-the-meter storage is what closes the gap in the meantime. Charge slowly overnight at the connection you already have. Discharge at the peak the fleet needs. Trade during the day.

Every depot in Britain is a candidate.

If your electric fleet is waiting on a connection queue, are you waiting for the wires - or for the accounting to catch up?

03/08/2026

380kg.

That's the weight we took out of the trailer before this unit ever left the factory.

Lets admit it. Most "mobile" battery systems aren't really mobile. Bolt a battery onto a standard trailer and you sail past 3.5 tonnes, which means a bigger licence and a specialist vehicle every time you want to move it.

So we stopped bolting.

Working with Indespension, we threw out the standard-trailer approach and designed the chassis around the battery. The axle and A-frame are built into the load-bearing structure of the system itself, with component placement mapped to the axle group and hitch point. Validated by calculation and finite element analysis, not hope.

The result: 380kg gone, and the system sits under 3.5 tonnes. Any standard vehicle, any standard licence, tows it away.

In mobile power, weight isn't a spec. It's the budget you spend on features.
That 380kg is why this unit still carries integrated DC fast charging, DC recharging from a fast charger, Syncflow UPS and IsoCharge, and stays under the towing limit.

This is our first customer unit on the new integrated trailer. It passed IVA last week. Today it left Acton, bound for a company that delivers live broadcast including major sports.

Be honest: how much of your "mobile" power actually needs a lorry and a booked-in driver to move it?

That's how long it now takes to recharge a 300kWh mobile battery from 20 to 80%. At any public rapid charger. On the for...
29/07/2026

That's how long it now takes to recharge a 300kWh mobile battery from 20 to 80%. At any public rapid charger. On the forecourt, mid-job, between deployments.

Here is the catch that has held mobile battery storage back: to recharge, you either tow it back to the depot or find a 3-phase AC supply. On a construction site, a film set or a grid-constrained substation, good luck with either. That is the gap diesel has been living in.

Not any more.

We have just completed the first DC recharge install on a MAX300. The unit plugs into any CCS2 rapid charger, up to 150kW (and soon 200kW), and tops itself up like an EV. No tanker. No depot round trip. No 3-phase hunt.

Proven already on our MAX500 fleet for SiteCharge. Now retrofitted to OnBio's Orb300 unit called "Chaplin" and recharging on the live public network at various networks over the last few weeks.

→ 20 to 80% in just over an hour
→ Any DC rapid charger, CCS2, up to 150kW (soon 200kW)
→ Same-day turnaround and redeployment between jobs
→ Tested across every major UK charging network
→ Still fits in a standard parking space

This is the flexibility construction, film & TV and energy utilities have been waiting for before they drop the diesel generator for good. A mobile battery that refuels from the same network it was built to support. That is the whole point of second-use EV batteries. They were always meant to plug back in.

Real credit to Andrew Pennie and Robert Carter, who led this, and the engineering team at Allye who supported.

If your temporary power still needs a fuel tanker or a spare 3-phase supply to keep it running, what exactly are you paying for?

Link in the first comment.

80%.That number is a bigger problem than we realise. 80% of UK sites face grid constraints the moment they try to electr...
28/07/2026

80%.
That number is a bigger problem than we realise.

80% of UK sites face grid constraints the moment they try to electrify, expand, or become more resilient. 48% of energy professionals now name grid and storage as the biggest barrier to net zero (Cornwall Insight).

Not blocked by cost. Not blocked by regulation.
Blocked by copper in the ground laid before your grandparents were born.

The average UK transformer is over 60 years old. The oldest in service dates from 1932.

We built the grid for one-way power flow from big coal plants. We're now asking it to run a two-way, renewable-heavy, EV-charging, data-centre-hungry system.

It's like installing a solar array on a house that still uses gas lamps!

Here's what almost nobody in Westminster will likely admit:

Britain will decarbonise its industry, or it will keep its industry. Not both. Not on this grid. Not in this decade. Unless we stop pretending the wires we have are the wires we need.

If you're waiting on a connection right now - how long is your quote?

Link in first comment.

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