The Anonymous Widower

E.ON Invests £4 million In Allume Energy To Boost Solar Rollout For Flats

The title of this post, is the same as that of this article on Solar Power Portal.

These three paragraphs explain the deal and say a small amount about Alume’s SolShare system.

Energy supplier E.ON UK has today (17 June) announced that it has signed a strategic investment agreement with Australian firm Allume Energy to help the firm expand into the UK.

E.ON UK has invested £4 million into Allume Energy to enable Allume to expand the reach of its SolShare technology within the UK market. SolShare allows solar energy from a single rooftop solar PV installation to be fairly shared amongst multiple homes in the same building in order to allow residents of flats to access solar PV energy.

Residents are supplied their energy when they are using by a pre-determined allocation, allowing them to lower their energy bills. Many blocks of flats that do have solar panels fitted currently only use this energy to power the common areas of the building while residents still pay their full electricity bill. According to Allume, a shared rooftop solar PV system can reduce resident energy bills by between 30% and 60%.

I must say, that when I read this article, it had something of the too-good-to-be-true about it.

But.

  • My solar installation on a fair-sized roof cost me about £6,000 and I am constantly surprised at how much electricity it provides.
  • If you have fifty flats, they all won’t do their weekly washing at the same time each week.
  • I wouldn’t be surprised to see a big battery somewhere or a small battery in each flat.
  • The batteries could soak up any excess electricity or charge on cheap-rate overnight electricity.
  • Do Allume’s engineers go through every flat and make suggestions about saving energy?
  • Is the pattern of electricity usage in a block of flats predictable from past usage and factors like weather, the time of the year and what’s on television?
  • I wouldn’t be surprised that Allume have performed extensive mathematical modelling on blocks of flats.

I think this deal could be a winner foe E.ON, Allume and their customers.

I have some ideas about the use of the system.

Would It Work On A Small Housing Estate?

A small housing estate would be a number of solar roofs feeding a number of houses, whereas with flats it will be one roof feeding a number of dwellings.

I suspect that with a well-designed sharing and pooling system, a lot of features of the flat-powering system could be used to power houses.

How Does The System Handle Electric Vehicles?

The system could use these to store electricity, so that they are always charged at the cheapest rate.

And when there is a shortage of electricity, the electricity could be borrowed by the Allume system.

Conclusion

If you have community sharing their own source of electricity, you can probably make ideas work, that wouldn’t in a single application.

My nose says Allume’s idea has legs.

June 17, 2025 Posted by | Energy, Energy Storage | , , , , , | 2 Comments

Underground Hydrogen Storage Pilot Gets Funding Boost

The title of this post is the same as that of this article on Energy Live News.

This is the sub-heading.

New hydrogen storage tech could boost grid resilience and emissions cuts

These first three paragraphs add some details.

National Gas and Gravitricity have secured £500,000 from Ofgem to develop a new type of underground hydrogen storage.

The H2FlexiStore system, designed by Edinburgh-based energy storage firm Gravitricity, aims to store up to 100 tonnes of green hydrogen in lined geological shafts.

The technology, which could see a demonstrator built in 2026, is intended to offer a flexible, resilient solution to future hydrogen network needs.

The article also has an excellent graphic.

Note that it takes 55.2 MWh of electricity to generate a tonne of hydrogen, so a hundred tonnes of hydrogen would store 5.52 GWh of electricity as hydrogen.

 

June 12, 2025 Posted by | Energy, Energy Storage, Hydrogen | , , , | Leave a comment

Glen Earrach Energy (GEE) To Give £20m Per Year To Highland Communities

The title of this post, is the same as that of this article on the Inverness Courier.

These two paragraphs introduce the article.

The announcement is underpinned by the publication of a new developer-led research report, the first of its kind in the UK energy sector, which brings together national polling, public consultation, and direct input from communities.

The report marks a major step in the development of the fund, setting out emerging priorities, design principles and governance themes that reflect what GEE has heard to date and will help guide the next phase of engagement.

Other points from the article include.

Size And Delivery

This is said about the size and delivery of the project.

Subject to planning, the project will provide up to 34GWh of long-duration energy storage in 2030.

All these projects seem to be on course for delivery by 2030. Mr. Ed. Milliband will be pleased.

The Community Wealth Fund

This is said about the Community Wealth Fund.

The fund will be rooted in the communities that share the key water resource underpinning the scheme, with scope to contribute to wider regional projects, including contributions to a Strategic Fund for the Highlands as a whole.

“The GEE Community Wealth Fund is about more than sharing the benefits of clean energy, it is about creating long-term value for the communities who make this project possible.

As the grandmother of all pumped storage hydro in the UK; Electric Mountain, started storing energy and producing power in 1984, the Community Wealth Fund should last a few years.

 

June 9, 2025 Posted by | Energy, Energy Storage | , , , | Leave a comment

Mountain Marvel: How One Of Biggest Batteries In Europe Uses Thousands Of Gallons Of Water To Stop Blackouts

The title of this post, is the same as that of this article on The Guardian.

This is the sub-heading.

Much-loved’ Dinorwig hydroelectric energy storage site in Wales has a vital role to play in keeping the lights on

These are the first three paragraphs of the article.

Seconds after a catastrophic series of power outages struck across the UK in the summer of 2019, a phone rang in the control room of the Dinorwig hydropower plant in north Wales. It was Britain’s energy system operator requesting an immediate deluge of electricity to help prevent a wide-scale blackout crippling Britain’s power grids.

The response was swift, and in the end just under one million people were left without power for less than 45 minutes. While trains were stuck on lines for hours and hospitals had to revert to backup generators, that phone call prevented Britain’s worst blackout in a decade from being far more severe.

Almost six years later, the owners of Dinorwig, and its sister plant at Ffestiniog on the boundary of Eryri national park, formerly Snowdonia, are preparing to pump up to £1bn into a 10-year refurbishment of the hydropower plants that have quietly helped to keep the lights on for decades.

This is one of the best articles, I have read about pumped storage hydroelectricity.

It is very much a must read.

May 25, 2025 Posted by | Energy, Energy Storage | , , , , , | 1 Comment

Trump’s Tax Bill To Cost 830,000 Jobs And Drive Up Bills And Pollution Emissions, Experts Warn

The title of this post, is the same as that of this article on The Guardian.

This is the sub-heading.

Bill will unleash millions more tonnes of planet-heating pollution and couldn’t come at a worse time, say experts

This first paragraph adds a bit more detail.

A Republican push to dismantle clean energy incentives threatens to reverberate across the US by costing more than 830,000 jobs, raising energy bills for US households and threatening to unleash millions more tonnes of the planet-heating pollution that is causing the climate crisis, experts have warned.

After that the news gets worse for the planet and the sooner Tamworth retires or is retired, the better!

 

May 22, 2025 Posted by | Energy, Energy Storage | , , | Leave a comment

ENGIE And CDPQ To Invest Up To £1bn In UK Pumped Storage Hydro Assets 

The title of this post, is the same as a news item from ENGIE.

These four bullet points act as sub-headings.

  • Refurbishment programme to extend life of plants at Dinorwig and Ffestiniog will ensure the UK’s security of supply and support the transition to a low carbon energy future  
  • ENGIE owns 75% of the plants via First Hydro Company, a 75:25 joint venture with Canadian investment group CDPQ 
  • The two pumped storage hydro plants are the UK’s leading provider of power storage and flexibility, with 2.1GW of installed capacity  
  • They represent 5% of the UK’s total installed power generation capacity and 74% of the UK’s pumped storage hydro capacity

These three paragraphs give more details.

The preparation of a 10-year project of refurbishment at *ENGIE’s Dinorwig pumped storage station has begun, following an 8-year refurbishment at Ffestiniog, enabling the delivery of clean energy whenever needed.

These flexible generation assets, based in North Wales, are essential to the UK Government’s accelerated target of achieving a net zero carbon power grid by 2030. Together they help keep the national electricity system balanced, offering instant system flexibility at short notice. The plants are reaching end of life and replanting will ensure clean energy can continue to flow into the next few decades.

Re-planting could see the complete refurbishment of up to all six generating units at Dinorwig – a final investment decision is still to be made on the number of units to replace – while the re-planting at Ffestiniog will be completed at the end of 2025. The program also involves the replacement of main inlet valves – with full drain down of the stations – and detailed inspections of the water shafts.

It also looks like the complete refurbishment at Dinorwig will take ten years, as it seems they want to keep as much of the capacity available as possible.

When the replanting is complete, the two power plants will be good for twenty-five years.

Hopefully, by the time Dinorwig has been replanted, some of the next generation of pumped storage hydroelectric power stations are nearing completion.

The news item says this about Dinorwig.

Dinorwig, the largest and fastest-acting pumped storage station in Europe, followed in 1984 and was regarded as one of the world’s most imaginative engineering and environmental projects.

Dinorwig must be good, if a French company uses those words about British engineering of the 1980s.

May 21, 2025 Posted by | Energy, Energy Storage, Environment | , , , , , , , , | Leave a comment

UK Solar Applications Spike Ahead Of CP30 But Planning Process Remains Slow

The title of this post, is the same as that of this article on Solar Power Portal.

This is the sub-heading.

Solar Media Market Research analyst Josh Cornes tracks the time solar PV developments spend in the planning system, as delays and refusals slow the rate of buildout.

These three introductory paragraphs add more detail.

Solar PV buildout in the UK continues to pick up, with year-on-year growth forecast for 2025, the seventh year of growth in a row.

With government-led initiatives like Clean Power 2030 (CP30) encouraging buildout and the Contracts for Difference (CfD) mechanism incentivising development, this growth is unlikely to slow down.

However, there are several factors at play stunting this growth, hurting the UK’s chances of hitting the CP30 target of 45-47GW solar generation capacity by 2030.

The article also talks about the problems of grid connections and says that some solar farms will take thirty-three years to get a connection.

In Technology Behind Siemens Mobility’s British Battery Trains Hits The Tracks, I said this.

Cameron Bridge station is lucky in that there is already a 132,000 KVAC electricity connection to the distillery next door.

But at other places, where there is no connection, you could wait as long as seven years to be connected to the grid.

So could the clever engineers at Siemens, devise some sort of electrical gubbins, that connects a solar farm directly to Siemens innovative Rail Charging Converter?

Instead of needing two connections to the grid, the setup won’t need any.

Surely, other types of users could be driven directly, or through an appropriately sized battery?

 

 

May 21, 2025 Posted by | Energy, Energy Storage, Transport/Travel | , , , , , , | Leave a comment

Could A Highview Power CRYOBattery Provide Backup Power For A Large Data Centre?

I asked Google AI how much power does a data centre need and got this answer.

The power requirements for an average data center vary greatly depending on its size and purpose, ranging from 1-5 MW for small facilities to 20-100 MW or more for large hyperscale centers. Small data centers, typically with 500-2,000 servers, might need 1-5 MW of power, while large or hyperscale data centers, housing tens of thousands of servers, can consume 20-100 MW or even more.

As Highview Power are currently building four 200 MW/2.5 GWh CRYOBatteries for the UK, I am fairly sure the answer is in the affirmative.

May 4, 2025 Posted by | Computing, Energy, Energy Storage | , , , | Leave a comment

Ambitious £3bn Pumped Hydro Project At Loch Ness Moves Forward

The title of this post is the same as that of this article on Sustainable Times.

These are the two introductory paragraphs.

A £3 billion pumped storage hydro (PSH) project near Scotland’s iconic Loch Ness is one step closer to becoming a reality. Glen Earrach Energy (GEE) confirmed on April 25th that it has officially submitted the planning application for its ambitious 2gw scheme.

If greenlit, this project would represent nearly three-quarters of the total PSH capacity planned for Loch Ness, contributing 34 GWh of the region’s 46 GWh storage goal. But it’s not just the storage that stands out. This development would also account for two-thirds of the generating capacity, all while using just half of the water previously considered. To put it into perspective, the project’s capacity would be on par with the combined output of around 800 onshore wind turbines scattered throughout the Highland Council area.

Note.

  1. The generating and pumping capacity for this ambitious scheme is given as 2 GW. Only three in China and one in the United States are larger.
  2. The storage capacity of 34 GWh will make it the largest in the UK, possibly the second largest in Europe to Ulla-Førre in Norway and one of the ten largest in the world.
  3. A projected 10% reduction in the UK grid’s carbon footprint is claimed.
  4. The cost of three billion is high, but compare that with the tens of billions quoted for the 3.26 GW Hinckley Point C.

The Glen Earrach scheme is not short on superlatives and the article in Sustainable Times is worth a thorough read.

Fifth Hydro Project Proposed At Loch Ness, is based on a BBC article of the same name.

These were my thoughts in the related post.

The Existing Hydro Schemes On Loch Ness

According to the BBC article, there are two existing hydro schemes on Loch Ness.

  • Foyers is described on this web site and is a reasonably modern 305 MW/6.3 GWh pumped storage hydroelectric power station, that was built by SSE Renewables in the last fifty years.
  • Glendoe is described on this web site and is a modern 106.5 MW conventional hydroelectric power station, that was built by SSE Renewables in the last twenty years.

Foyers and Glendoe may not be the biggest hydroelectric power stations, but they’re up there in size with most solar and onshore wind farms. Perhaps we should look for sites to develop 100 MW hydroelectric power stations?

The Proposed Hydro Schemes On Loch Ness

According to the BBC article, there are four proposed hydro schemes on Loch Ness.

  • Coire Glas is described on this web site and will be a 1.5GW/30 GWh pumped storage hydroelectric power station, that is being developed by SSE Renewables.
  • Fearna is described on this web site and will be a 1.8GW/37 GWh pumped storage hydroelectric power station, that is being developed by Gilkes Energy.
  • Loch Kemp is described on this web site and will be a 600MW/9 GWh pumped storage hydroelectric power station, that is being developed by Statera.
  • Loch Na Cathrach is described on this web site and will be a 450MW/2.8 GWh pumped storage hydroelectric power station, that is being developed by Statktaft.

In addition there is, there is the recently announced Glen Earrach.

  • Glen Earrach is described on this web site and will be a 2GW/34 GWh pumped storage hydroelectric power station, that is being developed by Glen Earrach Energy.

Note.

  1. The total power of the seven pumped storage hydroelectric power stations is 4.76 GW.
  2. The total storage capacity is 89.1 GWh.
  3. The storage capacity is enough to run all turbines flat out for nearly nineteen hours.

I estimate that if 2 GW/34 GWh of pumped storage will cost £3 billion, then 4.76 GW/89.1 GWh of pumped storage will cost around £7-8 billion.

April 27, 2025 Posted by | Energy, Energy Storage | , , , , , , , , , , , | 2 Comments

Avacon And Rolls-Royce Are Testing The Contribution Of Battery Storage And PV Systems To Grid Stability

The title of this post, is the same as that of this press release from Rolls-Royce.

These two bullet points act as sub-headings.

  • Field tests are investigating the intelligent integration of renewable energies with home storage systems and larger mtu battery storage systems
  • Objective: to contribute to the efficient energy supply of energy communities and grid support

This introductory paragraph adds more detail.

German energy supplier Avacon and Rolls-Royce together are driving forward the integration of battery storage into the power grid as part of a research project. Based on a field test, the aim is to show how energy communities, PV systems and mtu battery storage can be intelligently linked to contribute to an efficient energy supply and to stabilize the energy system. Avacon and Rolls-Royce are already collaborating on a second research project. The aim is to use battery storage to moderate generation peaks from PV systems and bring them into line with electricity consumption.

This all takes me back to the early 1970s, when my software was used by the Water Resources Board to plan future water supply in the South of England.

Given, that we don’t seem to suffer supply problems with water in the South, I feel that Dr. Dave Dimeloe and his team did a good job.

Some of the techniques, that I used fifty years ago, would allow an accurate model to be made of what Rolls-Royce call an energy community.

But my experience with water and later with the flow of money in peer-to-peer lending, lead to my thinking that energy communities will be stable.

But that is for Rolls-Royce to prove or disprove.

 

 

 

April 18, 2025 Posted by | Energy, Energy Storage | , , , , , | Leave a comment