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Robert Osfield @robertosfield.bsky.social · 03/10/2026

The growth in BEV and PHEV registrations meant that overall figures 12.1% up YOY are are now the highest since 2017.

Robert Osfield @robertosfield.bsky.social · 03/10/2026

BEVs with 99,199 registrations are 26,524 higher than September 2026. PHEV with 59,563 registrations are 21,302 higher than last year. HEV and Petrol both shrank modest amounts, but bizarrely Diesel's grew YOY.

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Robert Osfield @robertosfield.bsky.social · 03/10/2026

@smmt-ukauto.bsky.social have published UK new car registrations in September. BEV market share since April has been above 26% every month. If sales follow a similar trajectory as for previous years last quarter we will see sales 30% and above for the rest of the year.

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Robert Osfield @robertosfield.bsky.social · 02/10/2026

15 years from now is 2041. Is that how long you are willing to wait for the savoir of new locally extracted Gas production? In a similar time frame the UK Grid has gone from 69% Coal + Gas in 2012 to 26% Gas in 2026. www.mygridgb.co.uk/historicalda...

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Robert Osfield @robertosfield.bsky.social · 04/09/2026

The breakdown of the registrations data show 27.7%, 26.3% and 39.8% year on year growth for BEV, HEV and PHEV respectively in August. Biggest looser was Petrol (includes mild hybrids) down 3.5%. In growth in absolute registrations, BEV saw an extra 6094, HEV an extra 2137 and PHEV an extra 4251.

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Robert Osfield @robertosfield.bsky.social · 04/09/2026

@smmt-ukauto.bsky.social have posted their UK new car registration data for August and electrified cars all show big gains with BEVs staying ahead of s-curve that would see BEV with over 50% share before the January 2028.

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Robert Osfield @robertosfield.bsky.social · 21/08/2026

For the last 3 months I have been busy improving handling of very large paged databases and support for task/mesh shaders in the VulkanSceneGraph projects. Further information about this work and the developer releases I made today can be found on the project forum: github.com/vsg-dev/Vulk...

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Robert Osfield @robertosfield.bsky.social · 16/08/2026

@mygridgb.bsky.social has this excellent UK historical annual grid generation plot, that illustrates how the UK has transitioned from being dominated by Coal and Gas generation: www.mygridgb.co.uk/historicalda... Would love to see the ordered left to right from low to high gCO2/kWh sources.

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Robert Osfield @robertosfield.bsky.social · 10/08/2026

The 11.7% growth is driven by strong growth in electrified cars that outstrips the shrinking share of pure fossil cars - Petrol shrinking -5.2% and Diesel -17.7% year on year. We are seeing consistent movement from pure fossil to electrified cars.

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Robert Osfield @robertosfield.bsky.social · 10/08/2026

@smmt-ukauto.bsky.social have published UK car registration figures for July. Again we see really strong growth for BEV (44.5% year on year) and PHEV (33.6%).

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Robert Osfield @robertosfield.bsky.social · 31/07/2026

Tesla and SpaceX stock prices are 29.73 and 32.44% down this year/since launch respectively. Has the market woken up to hype?

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Robert Osfield @robertosfield.bsky.social · 11/07/2026

Over the past decades annual Grid demand ha gone down substantially an increase in population over the same period. www.mygridgb.co.uk/historicalda... Our households and businesses have all got more efficient. This gives us headroom for adding air-con, charging EVs etc.

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Robert Osfield @robertosfield.bsky.social · 06/07/2026

The www.smmt.co.uk/vehicle-data... data shows solid growth for BEV, HEV and PHEV's with shrinking market share for Petrol and Diesel. One thing of note, The NewAutomotive figures for June have lower figures for Petrol and higher figures for HEV because SMMT categorize mild hybrids as Petrol.

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Robert Osfield @robertosfield.bsky.social · 06/07/2026

@smmt-ukauto.bsky.social have published their UK new car registration figures for June 2026. BEV's hit 30% market share with a 35% year on year growth. BEV growth remains ahead of the S-Curve that would see 50% BEV market share in January 2028.

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Robert Osfield @robertosfield.bsky.social · 04/06/2026

Individual market segments show the electrification of the UK new car market with both pure Petrol and Diesel shrinking in May and overall for the year. BEV and PHEV are the standout growth segments, with HEV managing a very modest growth.

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Robert Osfield @robertosfield.bsky.social · 04/06/2026

@smmt have published their UK new car registration data for May 2026 and BEV was the fastest growing segment up 34.2% over May 2025. The pure Petrol segment shrank the most, dropping 7.1% year on year. If the market continues on its current trajectory BEVs will exceed Petrol sales in 2027.

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Robert Osfield @robertosfield.bsky.social · 02/06/2026

Thanks, lots of noise with the monthly figures but with the annual figures we see a clearer signal. Sure looks like recent BEV exceed historical peaks in Petrol and Diesel sales in Norway. Must be lots of old ICE cars on the road that will need replacing soon.

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Robert Osfield @robertosfield.bsky.social · 05/05/2026

Big year and year growth across the board - 24% up on April 2025. All segments grew except Diesel. The most profound market share changes is move away from pure Petrol and and Diesel, in April 2025 they totaled 54.1%, but now in April 2026 they total just 46.8%. Electrification is progressing.

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Robert Osfield @robertosfield.bsky.social · 05/05/2026

@smmt-ukauto.bsky.social have published their UK new car registration data for April and 59.1% year on year growth in BEVs and 36.4% increase in PHEV are the standouts. Growth is in line with 50% BEV sales before 2028, but doesn't look like a exceptional month in this context.

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Robert Osfield @robertosfield.bsky.social · 17/04/2026

Prices for new EVs have been coming down year and year so it we expected price parity with Fossil cars to happen this decade, and soon after EVs would be cheape to buy. Here in the UK we're at this point - new EVs are now cheaper than new Petrol cars: plc.autotrader.co.uk/news-views/p...

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Robert Osfield @robertosfield.bsky.social · 15/04/2026

With Scotland generating so much Wind power, covering all our local demand and still having plenty to export most days of the year one, would think that electricity would be cheaper in Scotland to incentivize electrification of heating and transport. Alas, it's not. www.uswitch.com/gas-electric...

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Robert Osfield @robertosfield.bsky.social · 15/04/2026

Scotland's electricity grid is 100% carbon free once again, and exporting lots of power south to support Wales and England. During our evening peak demand all electric hobs and ovens, lighting, TVs, washing machines, heat-pumps, direct electrical heating, charging of EVs etc. are all carbon free.

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Robert Osfield @robertosfield.bsky.social · 07/04/2026

Even our household is generating healthy amounts of Solar. We're powering our household, including heating, from our rooftop Solar and charging household battery.

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Robert Osfield @robertosfield.bsky.social · 07/04/2026

39.4% of our electricity is coming from Wind. 33.5% from Solar Just 2.8% from Gas. Living in North Scotland region I'm not surprised by the high amount of Wind - here we're most Wind powered all year round. I do find the high amount of Solar is pretty astonishing. So much progress in a short time.

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Robert Osfield @robertosfield.bsky.social · 07/04/2026

A bit of sunshine and a bit of wind and the UK is now majority powered by low carbon (33g/kWh), low cost sources. carbonintensity.org.uk

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Robert Osfield @robertosfield.bsky.social · 07/04/2026

The stats show year on year growth for electrified cars with 46.9% for PHEV, BEV 24.2% and 7.3% for HEV, while non electrified cars shrank 6.1% of Petrol and 11.4% for Diesel. Overall market grew 6.6% this is driven by the growth of cars with plugs.

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Robert Osfield @robertosfield.bsky.social · 07/04/2026

@smmt-ukauto.bsky.social have published their UK new car registration data for March, BEV market share bumped up from 19.4 to 22.6%, this keeps the growth following the later adoption curve.

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Robert Osfield @robertosfield.bsky.social · 16/03/2026

Followed the link but got the following message about needing 5 more supporters, so I guess I beat the rush... I didn't see any means for adding support, but happy to do so.

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Robert Osfield @robertosfield.bsky.social · 11/03/2026

I live in North Scotland region where we already have an abundance of Wind power. This is what carbonintensity.org.uk reports on most days of the year, and ESPECIALLY in winter as that's when average wind speeds are at there highest. It's Curtailment which is our local problem.

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Robert Osfield @robertosfield.bsky.social · 11/03/2026

Did you get wet? That can cause clothing issues with stuff rubbing in new and unwelcome places. You can get products to apply in areas that rub, this is what I used in my ultras.

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Robert Osfield @robertosfield.bsky.social · 06/03/2026

Market share dropped for BEV, HEV, Petrol and Diesel over the past year, only PHEV grew. Despite the strong growth in PHEV the actual number of sales is half that of BEVs, and a quarter that of Petrol, and is even behind HEV is overall market share. BEV remains 2nd in market share behind Petrol.

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Robert Osfield @robertosfield.bsky.social · 06/03/2026

@smmt-ukauto.bsky.social have published their UK new car registration data for Feb. 2026. BEV grew marginally (2.8%) in absolute figures vs Feb. 2025, but strong growth in PHEV (43.5%) has resulted in BEV market share dropping from 25.3% to 24.2%. I've had to adjust the S-Curves later for this.

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Robert Osfield @robertosfield.bsky.social · 05/02/2026

The big winner for Jan 26 was PHEV that grew by 47.3% vs Jan 25, this brings them much closer to parity with HEVs. BEVs remain 2nd largest segment behind Petrol which shrank 1.9%. Diesel shrank even more dropping 8.8%.

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Robert Osfield @robertosfield.bsky.social · 05/02/2026

@smmt-ukauto.bsky.social's UK new car registration data for January 2026 show BEV sales grew by 0.1% but as the overall market grew by 3.4% so the share shrank a little to 20.6%. This shows in the market share trends with BEV no longer ahead the later adopter curve they had been tracking.

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Robert Osfield @robertosfield.bsky.social · 31/01/2026

They certainly can. Achieved a combined COP of 4.07 this week! Over 5 times better efficiency than our old combi boiler and no noxious emissions to boot.

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Robert Osfield @robertosfield.bsky.social · 06/01/2026

The most noticeable market development in 2025 was the solid growth of BEV +23.9% and PHEV +34.75% segments. While HEV +7.2% saw modest growth pure Petrol -8% and Diesel -15.6% shrank. In December BEV's 32.2% closed to gap to Petrol's 39.4% share respectively vs 31 & 42.2% in 2025.

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Robert Osfield @robertosfield.bsky.social · 06/01/2026

@smmt-ukauto.bsky.social have published there UK new car registrations for December 2025. Again the BEV market share peaked above the 30% market share line. Growth through 2025 stayed pretty close to the Later S-Curve, suggesting a 50% market share mid 2027.

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Robert Osfield @robertosfield.bsky.social · 04/01/2026

Heat pump out has maxed out at 6kW according to the Valiant sensors but... I would not trust this. We have a 5kW Valiant Aerotherm+ which has a theoretical max output higher than 5kW but that's in ideal conditions...

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Robert Osfield @robertosfield.bsky.social · 04/01/2026

The house is presently warming up after the overnight 16°C setback. Flow temp of 35°C is plenty for warming the house even with a delta to outside of 22°C.

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Robert Osfield @robertosfield.bsky.social · 04/01/2026

Unfortunately we don't have an Open Energy Monitor kit on our heat pump so can't provide robust and accurate figures for max cold weather output. It's -5.8°C here in the Trossachs so below the design temp of -4°C...

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Robert Osfield @robertosfield.bsky.social · 02/01/2026

Our 5kW Valiant Aerotherm+ required 2,451kWh of energy to generate 6,572kWh of heat and 2,860kWh if hot water with a seasonal COP if 3.85. Our 25 year old Gas boiler would used 13,500kWh so the heat pump 5 times more energy efficient!

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Robert Osfield @robertosfield.bsky.social · 02/01/2026

In 2025 we covered 11,535 miles in our MG5. We used 3340kWh of electricity of which 804kWh from public charging (24%.) Public charging costs including subscription was £397.62. Home charging was most at the overnight @ocitopus go rate if 8.1p/kWh but occasionally we charged during the day to.

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Robert Osfield @robertosfield.bsky.social · 02/01/2026

Happy New Year Folks :-) 2025 was our first full year as a de-carbonized household so we are now able to review all the monetary and carbon costs of having heat-pump, household battery, solar and an fully electric car. Our running and carbon costs are now 63% & 93% lower than before transitioning!

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Robert Osfield @robertosfield.bsky.social · 18/12/2025

I have only quickly scanned through the articles on the shift to EV and there are some oddities in there like the discussion on EVs on grid demand. I've been an EV owner for a year now, and 75% of our charging is done overnight between 12:30am and 5:30am aligned with low demand not peak.

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Robert Osfield @robertosfield.bsky.social · 18/12/2025

This research on modern household heat pump performance finds an average SCOP of 3.86, 40% better than older studies. Our heat pump has achieved a SCOP of 3.85 so far this year.

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Robert Osfield @robertosfield.bsky.social · 17/12/2025

@iea.org coal report "Analysis and forecast to 2030" suggests coal use is at it's peak and will fall slightly by the end of this decade: www.iea.org/reports/coal... Personally I suspect the rapid drop in cost of solar & batteries will drive a move from coal faster than the IEA forecasts.

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Robert Osfield @robertosfield.bsky.social · 05/12/2025

While the new Renault 5 is lovely and no doubt selling well it sadly isn't in the the top 10. www.smmt.co.uk/vehicle-data...

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Robert Osfield @robertosfield.bsky.social · 04/12/2025

Despite growth in BEVs Tesla shrank 5.91% year on year, increasing competition in the BEV space and folks being sick of Elon Musks conduct both having an effect. Toyota fared even worse down 9.87%, despite HEV and PHEV segments growing. Once a leader in electrification of cars is being left out.

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Robert Osfield @robertosfield.bsky.social · 04/12/2025

BEV, PHEV and HEV segments all grew year on year, while both Petrol and Diesel continue to shrink.

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Robert Osfield @robertosfield.bsky.social · 04/12/2025

@smmtgroup.bsky.social have published their UK new car registration data for November and while BEVs only grew 3.6% year on year they did this despite the overall market shrinking 1.6% and remains on track for 50% share around mid 2027.

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