Showing posts with label electric. Show all posts
Showing posts with label electric. Show all posts

Saturday, 3 October 2015

Electric Cars - Part of the Solution, or just delaying the Problem a bit?

Nissan Leaf - the most popular electric car in the UK.

Electric cars.
Love them or hate them, they look like they are here to stay.

With the recent changes proposed to the system for taxing motor vehicle ownership in the UK, hybrids will be taxed much more than currently, while "true" electric cars will pay no annual tax (like the rest of us do - I pay about 145 pounds (about 225 dollars, about 195 euros) a year for my "diesel" motorcar).

So how practical are electric cars?
The best-selling electric car in the UK seems to be the Nissan Leaf (although, to be fair, I did spot a pair of Teslas in a carpark in Southampton earlier in the year (Spring 2015)).
The Leaf has a renge of about 70 to 80 miles, depending on model - the earlier ones are quited at about 70 miles, while the later ones are quoted at just over 80 miles.
Given that we live about 46 miles from the centre of London (where the Leaf is exempt from paying the extra tax for pollution in the central area), that 80 mile range is a bit short ...

Some service areas on motorways (expressways/autobahns) have already got recharging points intalled for electric cars:
Electric charging pooint at Cullumpton Services, just off the M5, England
Seems there is more than one standard for charging connections too (I'm thinking VHS vs Beta all over again!), so the charging points have TWO sets of cables, one on either side. On the pump shown, the "Nissan" cable is on the right, looking in the direction I took the photo.
For that trip I suggested to central London, there is a pair of charging terminals at "London Gateway" services on the M1 (It used to be called "Scratchwood Services", but I'm guessing the image consultants thought they could make it sound more important!).
London Gateway services are about 33 miles from where we live, so, for safety, if we had a Leaf, we would have to stop on both the way to London, AND the way back ...
Not so practical, methinks.

So what about the owner of the Leaf shown at the top of this piece?
Turns out he drives about 25 miles each way a day, as he works in another town, and there is a carpark near his workplace where he puts it on charge while he is at work.
Even better, electric cars in that carpark don't have to pay the normal charge for parking either!
Win, Win.

And at home?
Electic vehicle charging point on the side of a house
Well, he has had a charging point installed on the wall of his house, so, in the evenings, he just plugs it in.

Electric cars, then, seem handy for some, but not so good for others.
If we bought one and wanted to visit my father (about a 250 mile trip each way), we'd have to stop at least 4 times each way on the journey - while, if driven carefully, our diesel car will get there and back without refuelling (and a bit further, too!).

And then we must ask ourselves if electic cars are actually the solution, or is it better to use cars (of all types) less.
we don't use our car much, instead making almost all of our jouneys on foot, by bicycle, or in our daughter's case, by bus.
Is this a better answer than us replacing our car with an electric one?
Our town has a rail system that connects us to London quite quickly and efficiently.
If the subsidies that are being used to promote electric car ownership were used to subsidise bus and rail travel instead, then we might not even need a car at all.
Certainly heavy subsidies for the public transport systems has caused a significant drop in motor traffic before (I'm old enough to remember the "Fare's Fair" policy adopted by London up until the mid-1980's, when it was cut on political grounds, rather than economic ones - actually, that whole tier of local government of London was abolished without a vote! All part of the "Thatcher" legacy that lead to her being the first leader in 350 years where some folks held street parties to rejoice at her eventual death (but, of course, by then, she had become an irrelevance) - the politist form of description of Thatcher would be to describe her as "devisive" - she wasn't voted out either - she was replaced in a political coup by the political party of which she was the leader, so even half "her side" hated her).
Anyway, enough of the political memoir - I only put it in as a historical note for folks under 30 that belive the rubbish the right-wing print media spout about it being unworkable - it worked 35 years ago (and, as a further aside, the trains got a lower subsidy under national ownership that they do now in a "privatised" rail system, and the tickets are STILL rather expensive. But, of course, now there are shareholders who want a "profit" - even though only onle line in the country genuinely breaks even, and that is the London to Cambridge route!)
There I go with another historucal footnote.

But as they say, those who fail to learn the lessons of the past are doomed to repeat them ...
Our town, Aylesbury, is well connected by train, and with the proposed EastWest rail link it will be even better.
But the trains are often a pricey way to travel, especially for two or more people who could share a car instaed!
Our town, Aylesbury, is pretty well connected by bus, too, but the tickets are not very cheap, and the routes tend to be long and circuitous - I can cycle the 25-ish miles (about 40km) from Aylesbury to Oxford in only a bit longer than the time the bus takes to get there!
And I'd save myself the price of the ticket too! (about 8 quid, 13 dollars, 11 euros)

But as I have mentioned before, the relatively high price of public transport means that many trips are cheaper for us by car, if they are unsuitable for walking or cycling, which would be our first two choices.

Electric vehicles have their place - commercial delivery vehicles, for example:
The "classic" British milk float - not many left now!
They will go maybe 20 ,ph (32 kph) flat out, but usually travel slower.

So that's by tuppence worth.
What do you think?

Should tax subsidies be given for electric car purchase/ownership, or should the money be used to subsidize public transport (buses and trains) instead?
Or should transport in general not be subsidized at all, and the money spent on something else (like Health, for example,), Or should it just be "given back" as a tax cut (which usually means the richest get the most back, but some folks would argue that they paid the most in the first place, and other folks would argue that they gain more from the system, so they should pay more)

What say you?
Electric cars and/or the subsuidies that go with them - Good or Bad

Friday, 3 April 2015

How much energy does YOUR house use?

A while back, I wrote a piece about the energy ratings on British houses, and I estimated our own house as being at the bottom of Band C, given our double-glazing, low-power lights, and recent condensing boiler.

So, with all that, how much energy do we actually use?

Our electricity usage is fairly constant, but our gas usage shows a seasonal cycle (there is a delay in the usage and the data, as we are billed every three month, so the "Winter Bill" appears in the data just as the weather is warming up.
In order to know whether any energy-saving upgrades are succesful, one has to know what the relative usage over time is.
Of course, as we have "gas" heating, the biggest factor in our usage is the temeratures that a particular winter brings.

That's me.
What about you?
Do you use more or less than us
(we have a "modern", in other words "small", 2-bed semi with a conservatory, and we live in the South of England)

Wednesday, 24 December 2014

Urban Deliveries - The Humble British Milk Float

The humble British Milk float,
The most successful electric vehicle ever built?
Discussing urban infrastructure with some friends, it occurred to me that folks outside the UK may not be aware of the humble British milk float.
I remember growing up in the early 1970s and seeing these on the streets then.

There are a couple of variations in the design, including some with only one front wheel, and one headlight, and a more ponted front end than the squarer milk float shown above.
Sometimes petrol (gasoline) powered vehicles are used for milk delivery, particularly in rural areas, but the "classis" milk float is a battery-powered vehicle, with a string lower frame (to take the weight of the batteries!) and a lightweight upper body.
Some have plastic/grp bodywork, and some have metal bodywork, and some have side door (or no doors at all!) rather than the rear-entry cab shown above.

Such vehicles have a top speed of about 20 mph (32 km/h) and I remember cycling to work about 30 years ago on an unlit road being chased by this eerie light, I cycled faster and faster and was able to stay well in front of it. When we got to the next section of raods that had streetlights, I saw that I was being followed by a milk float (a single-headlight model).

So what is the relevance of this now?
Well, two things really:
Firstly, the electric milk float is probably THE most successful electric vehicle ever made;
Secondly, when we are thinking about how our towns and cities should be planned in the future, we need to think about what services (if any) we wish to provide.
For example, should we allow milk floats into cuty centre areas, but only before, say, 7 am?
In my experience, milk floats usually deliver somwhere between about 5 am and 7 am, 6 days a week.
Is that what we want in our cities?
Does having door-to-door milk (or whatever) deliveries mean that urban citizens cut down on car use as a result?
We discuss such things over on the Car-Free Cities community, and there is a currently a survey about ... (wait for it) ... milk floats.
Why not join us, and share your views!

Saturday, 23 November 2013

The Sinclair C5 - the "green" vehicle that was way ahead of its time

The Sinclair C5 - shown here superinposed with a "Mini" for size comparison.
Picture from the official press release that accompanied the launch of the C5 on 10th January 1985
(and, therefore, as it was part of a press release,
my use of it in this article would appear to be both legal and ethical)

Read my C5 review here.

The Sinclair C5 was released in Britain on the 10th of January 1985, and initailly priced at about 400 pounds (640 dollars, 480 euros, at current exchange rates, but not allowing for inflation!).

Although it was a commercial failure, it is a very good case study of a "green" vehicle.

I remember the original release (I'm nearly 50 years old!), and later, the C5s being sold at half-price to get rid of the stock.

I didn't buy one, as back in January 2005, I was a clerk at the Ministry of Defence (if you're an American, think Department of Defense, and you're pretty close!), and iirc, my MONTHLY wage was about 400 pounds before taxes etc. and about 300 pounds by the time it actually reached my bank account, so being priced at five-and-a-half weeks pay, the Sinclair C5 (at the original price) wasn't exactly cheap!

Iirc, about 10 or 15 years, some C5s were uprated to have solar panels on them and were sold in iirc California.

I am posting this article because it might inspire someone to design a practical, modern, "green" vehicle, but do read my review first, for my comments on actually driving (riding?) the Sinclair C5!
Anyway, onto the dimensions.
There are a few link at the end of this piece where you can go to download manuals etc. for the Sinclair C5.


Size
  • Overall length: 1.744m (5' 9")