David """
what is the weekly income in a fairly remote-village in Indonesia of a unemployed worker at the moment? and their minimum wage? We want to give them this app so that they can earn more money from a pile of plastic at the river. How much/little might they be earning right now without this?
"""
Elior """
Yes. For the DFD-5 idea, the relevant comparison is not really Indonesia's statutory minimum wage. It's what someone with little or no formal employment in a remote village can realistically earn from casual/informal work.
Indonesia's minimum wage is regional and monthly rather than one national hourly rate. For 2026, provincial floors range substantially: for example, Central Java is Rp2.327 million/month, East Java Rp2.447 million/month, and Jakarta Rp5.730 million/month. Some regencies/cities set higher UMKs; rural Central Java examples are around Rp2.33–2.77m/month.
That roughly puts a low-end formal minimum wage around Rp540,000–640,000 per week if you simply convert the monthly figure to a weekly equivalent. But that doesn't mean an unemployed villager has access to a minimum-wage job.
The more useful official statistic is from Indonesia's BPS. In August 2025, employees in rural Indonesia averaged Rp2.58 million/month, versus Rp3.62m in urban areas. Again, that's people who actually have employee jobs, so it probably overstates the opportunity available to the person you're describing.
And we now have some particularly relevant 2026 research on Indonesian waste pickers. One study of 204 waste pickers found average earnings of Rp72,000/day, with a median of Rp60,000/day and a very wide Rp10,000–400,000 range. Another recent study found independent waste pickers around Rp36,500/day, seasonal/daily pickers around Rp41,300, and people connected to aggregators around Rp52,400/day.
So for the person you're imagining — unemployed/underemployed, remote Indonesian village, willing to collect plastic from the river — I'd use something like this as our working economic model:
Situation Plausible income
No available work Rp0/day
Very low-paid irregular work Rp20k–40k/day
Independent waste collection ~Rp35k–50k/day
Established waste picker ~Rp60k–75k/day
Low-end formal minimum-wage job ~Rp90k–110k/workday equivalent
There are obviously enormous differences between Java, Bali, Sumatra, Kalimantan, Sulawesi, Papua and individual villages, so I wouldn't build the DFD economics around a single Indonesian wage figure.
But it gives us an extremely interesting target.
Suppose DFD-5 enabled somebody to turn an otherwise nearly worthless local pile of river plastic into enough value that their net worker payment was Rp100,000/day.
That's only roughly A$9/day at recent exchange-rate magnitudes, but it would be around Rp600,000 for six days — already comparable with a week's low-end formal minimum wage and substantially above the incomes reported for many independent waste pickers. The important figure would be net worker income after collection/transport/processing costs, not the gross value of whatever DFD produces.
And that changes how I see the app we were just discussing.
The primary button probably shouldn't be:
Operate DFD-5
It should be:
Find Work
And a job could literally be:
River Plastic Collection
Location: Sungai ___
Needed: 25 kg
Accepted plastics: HDPE / PP
Payment: Rp75,000
Bonus above 25 kg: Rp2,500/kg
[ ACCEPT JOB ]
Someone with no machine, no capital and perhaps only a cheap Android phone could participate. The DFD operator, collector, sorter and transporter need not be the same person.
That is potentially much more important than the machinery-app interpretation I initially gave you: the phone is an interface into a local labour/economic network, and the pile of plastic becomes the available work.
so translate that into Euros for me
Yes. Using today's rough rate of €1 ≈ Rp20,400 , the figures I gave translate approximately to:
Indonesian income Euros
Rp20,000/day €0.98/day
Rp35,000/day €1.72/day
Rp50,000/day €2.45/day
Rp60,000/day €2.94/day
Rp75,000/day €3.68/day
Rp100,000/day €4.90/day
Rp600,000/week €29/week
Rp2.33m/month €114/month
Rp2.58m/month €126/month
So the scale we're talking about is strikingly small in European terms.
A remote/informal worker making €2–€3.50 a day would be quite consistent with the waste-picker figures we were discussing. Getting that person to €5/day net through DFD work would be a meaningful increase. Getting them to €7–€10/day would be a very substantial change in income.
And this is useful for our DFD design thinking: a job that costs the network only €3–€5 could potentially represent a worthwhile paid assignment to the worker. That makes lots of small jobs economically plausible rather than requiring every assignment to generate tens of euros of value.
"""
David """
At €7–€10/day, how many litres of fuel does mean that they would need if they only made a gross profit of 50% due to taxes and possible excises and they were only able to sell the fuel for 75% of the current Indonesian approximate fuel price at the moment?
"""
Elior Ai """
Yes. And the number is quite interesting.
As of September 2026, Pertamax (RON 92) is about Rp15,950/L in Jakarta, while Pertalite (RON 90) remains government-supported at Rp10,000/L. Pertamax varies somewhat by province—for example around Rp16,300/L in much of Sulawesi, Maluku and Papua.
I think Pertamax is the more sensible comparison for our model, because we're trying to estimate the commercial value of DFD fuel rather than competing against a subsidised price.
Using Rp15,950/L:
DFD selling price at 75% = Rp11,963/L.
If only 50% of that remains as gross profit after the taxes/excises/costs you're allowing for:
worker/economic margin = Rp5,981/L.
Using our previous approximate exchange rate of Rp20,400/€:
≈ €0.293 profit per litre.
Therefore:
Desired daily income Fuel required
€7/day ~24 L/day
€8/day ~27 L/day
€9/day ~31 L/day
€10/day ~34 L/day
So a very useful first-order DFD-5 target emerges:
Roughly 25–35 litres of saleable fuel per day could support a €7–€10/day worker income.
And we've been deliberately pessimistic there: selling the product for only 75% of normal Pertamax, then assuming half the sales revenue disappears before becoming available as income.
For comparison, if we benchmark against the subsidised Rp10,000/L Pertalite instead, the required production rises to roughly 38–54 L/day.
There's another important calculation immediately behind this one: how many kilograms of river plastic are required to produce those 25–35 litres? That's where we can see whether one worker with a DFD-5-sized operation could realistically achieve the income we're talking about.
"""
David """
let's do that then, how many kilograms indeed based on what the other guy from the video was showing?
"""
Elior """
Yes — we have a surprisingly useful number from that video.
The experiment used 200 g of polypropylene (PP) and recovered:
first run: 162.4 g liquid → 81.2% mass yield
salt run: 176.8 g liquid → 88.4% mass yield
So for a rough DFD calculation, we can call his demonstrated liquid yield ~0.81–0.88 kg of liquid per kg of suitable plastic.
We need one more conversion because we were talking litres rather than kilograms. A petrol/diesel-range pyrolysis liquid might reasonably be around 0.75–0.85 kg/L, depending heavily on composition. For a simple working number, let's use 0.80 kg/L.
That means approximately:
1 kg plastic → 0.81–0.88 kg liquid → ~1.0–1.1 litres
Or, conveniently for our rough economic model, about 1 kg of good PP plastic ≈ 1 litre of liquid product.
So our previous income calculation becomes approximately:
Target income Saleable fuel Suitable plastic required
€7/day ~24 L ~22–24 kg/day
€8/day ~27 L ~25–27 kg/day
€9/day ~31 L ~28–31 kg/day
€10/day ~34 L ~31–34 kg/day
But there's an important distinction for our river-plastic idea: 25 kg collected from a river isn't necessarily 25 kg of processable PP/PE.
There'll be water, mud, labels, food contamination, PET, PVC, textiles, metal and miscellaneous rubbish. If, say, only 50% of the collected mass ends up being suitable feedstock, then we're talking roughly 45–70 kg of raw river waste collected per worker per day to get the ~22–34 kg of useful plastic.
And suddenly the DFD worker model becomes quite tangible:
Collect ~50 kg river waste → sort ~25 kg usable plastic → produce ~25 L liquid → generate ~€7/day worker income.
That's not a prediction yet — it's a first-order mass/economic model based on the video experiment. But the orders of magnitude are surprisingly plausible.
It also tells us something useful about the app: a worker's Assignment doesn't necessarily need to say "make 25 litres of fuel." A collection worker's assignment could simply be:
Collect 50 kg from River Zone 14.
Payment on verified sorted weight.
Then sorting, processing and selling can be completely different people's jobs. That fits the worker-network concept we were developing extremely well.
"""