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According to the article and his website the machine costs $2,500 each, can produce 2 napkins per minute and requires 746W of power. Each machine employs a crew of four people.

A full scale industrial machine is claimed to cost $500K and, from a quick bit of google-ing can produce 350 napkins per minute and requires about 80KW of power. Each machine seems to be operable by a small team of five or so, but let's double that to ten people.

In order to match the production rate of a single industrial machine you would need:

Machines: 175

Cost: $437,500

Power: 131KW

Workers: 700

According to this (http://mahadiscom.com/emagazine/jan06/india1%5B1%5D.pdf) electricity cost in India runs around 1.5 rupees per KWh for residential and 3.5 rupees per KWh for industrial applications. Assuming ten hours per day (for easy math) the power costs compare as follows (converted to USD):

175 low cost machines @131KWh in household settings: USD $37 per day.

Industrial machine @80KWh in industrial setting: USD $52.87 per day.

The industrial machine cost a little more to run (power) but it produces 175 times more product per machine. Put a different way, around USD $0.03 of power is required per napkin with the household machine. The industrial machine --even at more than double the electricity cost-- only requires USD $0.0003 per napkin in power.

In terms of labor costs --assuming $1 per hour-- the household machine would cost about $0.033 per napkin while the industrial machine runs $0.0005 per napkin.

According to the linked statistic the TAM (Total Addressable Market) is around 300 million women:

http://articles.timesofindia.indiatimes.com/2011-01-23/india...

If his dream to "make India a 100% napkin-using country" is fully realized you would need to produce a minimum of 1500 million napkins per month (assuming five pads used per period). The solutions compare as follows:

Assuming that the machines are run 24 hours per day for 30 days.

- Household solution

Machines: 17362

Cost: $43,405,000

Power: 12MW

Labor cost per 30 days: $25,001,280

- Industrial Solution:

Machines: 100

Cost: $50,000,000

Power: 8MW

Labor cost per 30 days: $90,000

Unless my numbers are grossly wrong (please check, I threw them together quickly) this is not as good a solution as it has been made out to be. In fact, it looks like a really bad solution to a large scale problem. The costs are staggering. Power consumption is at least 50% greater. I'll bet that product quality and consistency also suffers a great deal. And, of course, we haven't even covered maintenance costs and MTBF (Mean Time Between Failures) of 18,000 low-cost machines versus 100 industrial grade machines.

Good job. Lots of work. But I'd invest in a used industrial machine out of China over making thousands of these low cost household devices.



Great analysis, missed a huge point though.

A fraction of an industrial machine makes zero napkins.

Your analysis is spot on, the problem can be solved more efficiently with a large scale production. The capital expenditure cost however is similar (43M vs 50M). You point out they huge disparity in labor costs $25M vs .09M but labor is 'free' in India (which is to say there is so much of it available that the price is a lot less than elsewhere).

The incremental solution here wins because a small increment in cash instantly starts feeding the supply of napkins. The 'big machine' solution loses because it takes a huge investment to get to the point where you can make the napkins and nobody is willing to fund that.

There is another problem which are transportation costs. The infrastructure in India is, by all reports, spotty in the rural areas. By creating the manufacturing in the towns themselves you mitigate the transportation problems. That would not be possible with a centralized industrial machine. Further the folks who 'make' the napkins can also sell them so you have a personal relationship with someone in the town.

The incremental nature, the fact that India is labor rich and infrastructure poor, and the comparable capital costs make this an extraordinarily good solution to the problem.


> A fraction of an industrial machine makes zero napkins.

Well, that assumes that this is the only individual in India that could be interested in the market segment. There are plenty of people in India for whom USD $500K is not a lot of money, particularly if a solid case can be made for the investment.

He could have invested four years trying to raise money to buy a number of industrial grade machines rather than doing what he did.

Here's another interesting data point. According to this site (http://www.euronuclear.org/info/encyclopedia/n/nuclear-power...) the average nuclear power plant in India produces 200MW of power. Deploying enough machines to provide napkins to the TAM would consume around 6% of the power output of a single nuclear power plant. An operation based around industrial machines would require about 4%. It's interesting when you can measure things in terms of the percentage utilization of a nuclear power plant.

I looked through the various responses to my post. Lots of good points. Of course, the infrastructure in India is something I cannot have a good grasp of from my vantage point in suburban Los Angeles. When faced with something like this I always fall back to one of my favorite Mark Twain sayings: "A man holding a cat by the tail learns something he can learn in no other way". This inventor held that cat by the tail. Hard to judge from the outside. I'll have to leave it at that.


There are plenty of people in India for whom USD $500K is not a lot of money, particularly if a solid case can be made for the investment.

And that person would be welcome to undercut him and provide better value. Before he came along, pads were too expensive. Now they're affordable. They also stimulate the local economy, both in terms of increased jobs and increased healthcare (very underrated). Regardless of the means, the end result is better.

And even if he did the industrial machine thing, you've missed the comment on transport issues - transportation is a big thing.


I agree. Of all the arguments, the one about transportation is probably the most important. Even though there has been good improvements in national highways over the last decade, majority of the roads in India are still in desperate need of repair. Price of gas is about $6/gal. As compared to US, it takes probably 4 times longer to cover the same distance due to traffic and road conditions.

This problem is not new and I am sure that companies like J&J have looked at the Indian market. Reaching remote villages while providing a low price is something that a big company concerned about profits will not consider at all. Not until the numbers make sense.


...but labor is 'free' in India...

His numbers for labor cost, namely $1/hour, are in the ballpark of free. It's probably a bit high (I'd guess something closer to 15-35rs/hour), but not unreasonable.


When the bottom billion in India make around $1-$2 a day, his estimate is off by about an order of magnitude.


India has 1B people and a GDP per capita of about $1400/year, making it a mathematical impossibility that the bottom billion earns $1/day.

The minimum wage in India is 115rs/day, or 11.5rs/hour with a 10 hour workday, so it wouldn't even be legal to pay 5rs/hour (an order of magnitude less than the 50rs/hour algoshift postulated).

Assuming the machine operators earn a median Indian wage, assuming 8 hour days, 6 days/week, 52 weeks/year, their wage will be 28rs/hour.


According to the 2011 Census, India has 1.2 Billion people, so that rules out any mathematical impossibility.

$1 a day may seem extreme but in reality it's not quite as ridiculous as you suggest. In 2005, the World Bank estimated that 42% of India's population lived on $1.25 or less per day. In the interim years, the urban poor saw a 3.6% increase in income inequality and the rural 1.3%.

The issue of minimum wage in India is complicated, not all wage-earners get the either the national or state-level minimum wage (and women are disproportionally excluded). This article covers it in detail:

http://www.ilo.org/wcmsp5/groups/public/---ed_protect/---pro...


India has a little over 1.17 billion people, so if almost all the wealth goes to the top 15%, it's mathematically possible for the bottom billion to make $1 a day.

As you say, though, it still doesn't sound legal.


You're looking at one aspect of the problem, from the supply side. We've had industrial scale manufacturing of sanitary napkins for 100 years.

Procter and Gamble can already produce these things for a fraction of the cost. But building and maintaining a distribution network, marketing the product and making a healthy profit drives costs up.

This solution turns that problem on its head. Disperse the manufacturing locally, and let traditional/local social networks get the napkins distributed. In a country as large and complex as India, this is probably easier than finding 5,000 marketing campaigns to try to reach many small pockets of demand regarding a taboo subject.


Excellent point. Conversesly, the most likely is that Proctor and Gamble is perfectly positioned to enter this newly educated market and undercut this inefficient incumbent, destroying thousands of jobs in the process.

But we wouldn't have it any other way.


You could use the same math to show why cars are a terrible solution to transportation. And yet, we've got millions upon millions of cars, and relatively few trains and buses (at least on my continent). People don't decide how to live their lives by sitting down with a calculator and figuring out the most efficient method to serve the entire population of their country.

As the article pointed out, the biggest problem in this case is not technical. It's social.

Now that you've shown that the big machines are more efficient overall, how do you get there from here? I would even say that if you know from the start that you want a bunch of $500K machines, then bootstrapping -- what he's doing now -- is in fact the easiest way. Google has some massive datacenters but they didn't start by spending $50M on hardware on day 1.


> 175 low cost machines @131KWh in household settings: USD $37 per day. > Industrial machine @80KWh in industrial setting: USD $52.87 per day. > The industrial machine cost a little more to run (power) but it produces 175 times more product per machine.

Wait a minute here, you multiplied the electrical cost per cheap machine by 175 since it makes 175 times less, then compared the cost of the 175 times more, then claimed it made 175 times less, but you already adjusted it to be 1 to 1. Are you double compensating here?


This is correct; there is some double compensation.

746W per machine => 7.46KWh per day. Multiply by $0.03 USD/KWh (=1.5 INR) to get $0.22/day or $0.00022 per napkin, slightly cheaper than the industrial solution. In other words, the household machines are about half as efficient with power but their cheaper rates on power more than compensates.

In terms of overall efficiency, other factors like raw materials, transportation, etc. are likely to dominate--the power expenditure is small for both options.


-assuming $1 per hour

Unskilled/semiskilled laborers in India don't make anything close to that.

You are also missing the part where he is distributing production to poorer manufacturers who are willing to take a smaller profit, and thus pushing the market price down. Any commercial entity that buys the $500k machine will not want to get into a race to the bottom in pricing unless they are forced to do so. These distributed units which are run by poor women who don't want/need corporation level profits will force that race to the bottom. In the end, the big machines will likely prevail but prices will be much more reasonable.


Better 'usage' numbers (as a female):

>assuming five pads used per period

Assume 1-5 per DAY, at 3-6 days per 28 days. So, 3-30 per month, 40-400 per year per adolescent -> menopausal female.

Oh, and don't forget these are also useful for men in their old age.

I almost cried with pride reading this article. It is a massive, massive problem in the undeveloped world stopping girls and women from working and getting an education. By putting the means of production in the hands of a village collective, the results could be staggering.

See S.H.E. (Sustainable Health Enterprises) for another market-based example in this effort, based in Africa using plant matter without all this processing: http://www.sheinnovates.com/


You're forgetting bootstrapping costs. Sure, an industrial machine may be cheaper in the long term, but he'd have to raise $500k to buy one. In addition, buying an industrial machine lacks the immaterial benefit of bringing manufacturing and engineering jobs and expertise to India.

In addition, it's important to note that this is merely a first revision. It's safe to assume, I think, that future revisions would improve upon the design and, due to the agility of manufacturing (how many industrial machines are manufactured per year?), it should be easier to prototype models that improve efficiency, cost and quality. I'd even go as far as to say that if this catches on it will eventually come close to matching the efficiency of an industrial machine for a fraction of the current cost.


His solution may be better given the infrastructure. I don't know what the infrastructure is like, but using one big machine requires being able to distribute the napkins to a much wider area. In, say, the US, that's an easy win. We have good infrastructure, and it makes sense to use one big machine and buy them in stores. That may not be true in India - I invite anyone with knowledge on the subject to comment.


A small counterargument: that industrial machine produces 21,000 napkins per hour = 500,000 per day = 15,000,000 per month. So, it would serve say 500,000 women. In highly rural areas of India, the distribution of the product would require quite a complex distribution mechanism.


Indeed, it is not clear if that is just for the machine which produces the napkins or for the entire production line.

Also to take in consideration is

- warehouse area to store raw materials - some kind of financial system to manage purchase orders / sales orders

21,000 napkins / hour. Let's assume there's 10 in a box, 8 boxes to a case and 30 cases in a pallet.

So that's 2400 napkins / pallet = ~ 9 pallets per hour. You're also going to need labelling, conveyors, people to pack the boxes, people to pack the cases, people to stack the pallets and then a few fork lifts to move the pallets plus of course engineering staff to maintain all this.

So it's not really small machine v big machine, it's small machine v production line which adds a lot of complexity.


This ain't a Google interview :) so the follow-up question is to make a list of reasons why his solution is more practical than buying a used machine out of China.

The hint is the locality of production.


These are like the opposite ends of the approach continuum.

One end is a big centralized machinery designed to scale, and the appropriate logistics to ramp up availability across the country. But failures in production or transportation of goods will result in reduced availability. Also, centralized production drains the money to one place, namely the industrial area, and the local people might not have the money to continuously support buying these rags.

The other end is a distributed set of decentralized small-scale production fragments that produces local goods locally. The scheme will yield a higher local efficiency even if the total country-wide production of all units combine is more inefficient. It will recirculate local money more efficiently and boost local economy, again a local maxima, and this will allow more local people to buy the goods which was the whole point of this grassroots manufacturing. Also, production outages in one unit will not cause reduced availability since only a fraction of total production will be offline.

It gets fun to find analogies that fit this pattern. It's like Perforce vs Git, or West vs East.


> Workers: 700

Good!

The production is decentralized and it enables small business growth in rural areas.


You've left out energy costs to transport raw material to central huge factory, and product from that central huge factory.


If you weren't right, then the whole point of industrialization, division of labour etc, would be all wrong isnt it?

The advantage here is they will be able to sell napkins to a community at a MUCH lower price and still make a profit using these small machines than the industrial ones.


That's some great points. Thanks for the effort to lay out the costs involved. It's a good point to consider how there are often good reason for doing things the way we have been (caveats about this situation not withstanding).




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