National chooses not to rule ‘by decree’
Posted December 2, 2008
on:It looks like National has decided not to continue with the previous government’s plans to introduce a standard for lightbulb efficiency. They say
We want to encourage people to [switch], we think there may be benefits for them to do it, but it should be a choice they make as consumers.
It’s a good point: efficient CFL bulbs are tough to dim, take time to reach full brightness and don’t bring out the sparkle in chandeliers, apparently. So why would we want to force everyone to use them when they’re clearly not suited to some applications? Of course, if people did use them in their homes and offices, where they are suitable, it would be great for reducing our national power consumption.
What we really need is a solution which encourages people who don’t really need the current incandescent bulbs to switch, but allows those who truly benefit from incandescent bulbs to keep using them. An efficiency standard is too crude a tool to allow that to happen. However, if we could price power at its true marginal social cost, then people would make efficient decisions of their own accord. That is the beauty of carbon taxes/cap-and-trade schemes: we no longer need to worry about fine-grained regulation of things like lightbulbs, because the price signals sent by our emissions regulation will sort those things out for us.
Sadly, it seems that the implementation of such a carbon pricing scheme is now some way off. So, what options might the government have for getting people to switch without reducing their choices ‘by decree’? One such option, that works extraordinarily well, would be to change the default lightbulbs that you receive with goods. For goods that include bulbs, or for fitting out new houses, make the default option a CFL bulb, rather than an incandescent bulb. While it doesn’t change peoples’ choice set – they can still use an incandescent bulb if they prefer – it would give people exposure to the efficient bulbs, and it would switch indifferent consumers to the more energy efficient model.
Can anyone think of other options National might have gone with that don’t amount to ruling ‘by decree’?
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16 Responses to "National chooses not to rule ‘by decree’"

“Perhaps it’s c). Perhaps, like me, there are loads of people out their that pay off their credit card late, even when they don’t need to, just because they’re forgetful and don’t prioritise their time properly. Perhaps the power consumption of appliances is too hard and boring to figure out, and it just seems easier (if foolish) to minimise the up front expenditure.
If this is the case, perhaps we can justify central intervention due to an inability (or unwillingness) on the part of individuals to make decisons that are in their own best interests? I’d suggest that in some instances, perhaps it’s necessary for a well functioning economy and society that the government saves us from ourselves.”
I have an alternative. People place different values on the type of lights in their home. For those where money is limited they probably have a higher discount rate, and therefore purchase the cheapest bulb initially. For people with lots of money, they probably buy expensive bulbs, and aren’t too worried about the electricity they use, they just want what looks best in their home. Yes the sums may add up for you, that it is worthwhile spending a little extra now, to reduce your power bill. But for someone else, that little extra can go towards other things and lets worry about the power bill later. Yes it might even go towards cigarettes or alcohol. But if that’s what gives someone enjoyment rather than cheaper power and what they consider bad lighting, then why not? Who are we to decide that they are wrong?
People have different preferences and should have the freedom to choose. It is ridiculous for the government to intervene in this.


@Steve
Yup, totally correct. It’s entirely possible, and a suggestion that goes to the heart of economics, when we say that we can’t be sure that individuals aren’t consciously choosing to buy rather than bulbs.
I suggest though, that we can’t necessarily say that people always know what’s best for them, that’s an ingoing assumption. We can hypothesise that, and I guess I’m exploring how we might work things if we relaxed that a bit.
@Rauparaha
Perhaps the policy response is to get some people in a room. Have some “neutral party” (let’s assume away the problems associated with this for a moment) explain to a group of 30 people about light efficient bulbs. Have them do the math themselves. Then ask them again whether they’ve changed their minds and would choose to buy them.
If more than X% of people opt for the bulbs, then legislate it on the basis that pretty much everyone would buy them if they understood, but just don’t for some reason. If you want a model for why not, how about classic information asymmetry and searching costs, as well as availability bias and time inconsistency.
Practically I think we could get a pretty good approximation of this scenario, and then the government could look at policy responses, whether it’s subsidising lightbulbs, banning normal ones, whatever. Then look at the resultant ineffencies (overconsumption, loss of sparkle etc.) and weight up the intervention on that basis.
I think if you ran this exercise for seat belts, you’d decide to legislate for them…


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@Everyone
Dant03 is right, focus groups are very much me just thinking out loud, but my train of thought is that if we agree that in some instances people do silly things because of a lack of information (due to search costs or lack of availability) or lack of computational power (bounded rationality), then it might be that some central body can improve outcomes through regulation (assuming away regulatory failure).
Evidence for this is that many actions seem contrary to personal interest (wearing seatbelts, spending money on insulation) and if you do the math for any plausible range of imputs, it’s almost universally a good idea.
There are a few ways that we can overcome this. Rauparaha very correctly points to education. The big downside with education is that it’s often costly and difficult (getting people to you about an issue they don’t even think is a problem can be tough). Regulation is the alternative, and focus groups was just my way of exploring how we could set a bar for regulation.
He’s right that striking the balance is tough, how do you weigh up the costs. At a guess it’s fundamentally unknowable. All we can do is rack it up the best we can, make a few guesses and keep reviewing if it’s working.

December 2, 2008 at 9:55 pm
“…if we could price power at its true marginal social cost, then people would make efficient decisions of their own accord.”
There’s an implicit assumption here that people behave in ways that are, or at least appear to be, rational. Perhaps if this weren’t the case, we could justify central intervention?
The Herald article tells us that efficient lightbulbs stack up already, which leads us to one of three conclusions.
The majority of the population that aren’t using the light bulbs are:
a) Not using them because they need to use a dimmer, heat food, or want some more sparkle in their chandelier
b) Using a higher discount rate for expenditure than the NZ Herald
c) Just not doing the maths and making silly financial choices
Perhaps it’s c). Perhaps, like me, there are loads of people out their that pay off their credit card late, even when they don’t need to, just because they’re forgetful and don’t prioritise their time properly. Perhaps the power consumption of appliances is too hard and boring to figure out, and it just seems easier (if foolish) to minimise the up front expenditure.
If this is the case, perhaps we can justify central intervention due to an inability (or unwillingness) on the part of individuals to make decisons that are in their own best interests? I’d suggest that in some instances, perhaps it’s necessary for a well functioning economy and society that the government saves us from ourselves.
Sure, it impinges on our technical liberty. Sure, there’s often a more and less effective way to do this. Sure, the Government doesn’t have a track record of always picking the former. It raises thorny issues about a Government repudiating our behavior and making us do ‘what’s good for us’.
Maybe it’s possible, however, that in some instances having central regulation doing the maths for us (eg. no sane person would not want to have double glazing if they live in the South Island) save us time and effort?