Corporate presentation of SeatechEnergy. Presenting the seaweed cultivation technology Presenting the anaerobic digestion technology Presenting the seaweed cultivation projects in Indonesia and India

1. “The Future is Bright the Future is Seaweed”

2. The seaweed cultivation market size is estimated to be valued at USD 16.7 billion in 2020 and is
projected to reach USD 30.2 billion by 2025, recording a CAGR of 12.6% during the forecast
period.
Seaweed cultivation is beneficial for environment: CO2 absorption climate change,
biodiversity. The CO2 absorption of the farm in Takalar is ~1.500 ton
> 15.000 different species (red, green, brown) for various applications
Applications of seaweed: protein, animal feed, carrageenan, agar, human food, bio-
stimulants, medicines, bioplastics, fiber
In Indonesia nearly 900 species identified. Only a few commercialized
Indonesian farming industry consists of small individual farmers
Sector not industrialized yet: opportunities for improvement of yield, quality
Seaweed Introduction
Confidential
2

3. Indian seaweed sector is very immature and small; India is aiming to increase seaweed
production in the country to 11.5 lakh tons from the current production levels of 2,500
tons in the next five years.
Together with a key Indian seaweed processor STE will start a pilot in October ‘22. The
crop will be used for the production of bio stimulants.
Demand for seaweed from Europe is expected to increase with a lot of seaweed
processing initiatives started (bioplastics, fiber, food, animal feed etc.)
STE started the application process for EU subsidy to introduce the technology in EU
Seaweed Introduction
Confidential
3

4. History: 2014 Deepwater Horizon: Oil & Gas Co transition into renewables
Two Unique Patented Technologies
1. Anaerobic digester technology (ASUR)
2. Seaweed cultivation technology (ORCA)
Business model: The business model is to sell the cultivated seaweed (fresh or
dried) to the seaweed processing industry as feedstock. As various products
can be extracted from seaweed in a sequential process. The value chain creates
a fully circular blue economy model. After time deeper penetration into the
value chain to increase Margins and revenue. The ASUR technology can be
applied in the seaweed sector as well as standalone (digesting organic
materials -> renewable energy)
SeatechEnergy Introduction
Confidential
4

5. Patented self depth regulating circular framework
Mechanically strong whilst flexible at the same time to withstand forces
Long lifespan
Verified by Marine architect
Tested and proved in the rough waters around South Africa and Indonesia
Industrialization of seaweed farming: each platform has > 1 km’s of growing lines
Cultivation Technology: Seaweed Growth
Structure (ORCA)
Confidential
5

6. Confidential
6

7. Confidential
7

8. Cultivation Technology: Seaweed Growth
Structure (ORCA)
Confidential
8

9. Cultivation Technology: Seaweed
Growth Structure (ORCA)
Confidential
9
• A seaweed farm is made of hundreds of ORCA’s
• Fitted with GPS antennas for identification, for location and
transmission of data (condition seaweed, water etc.)
• Seaweed farms laid out in shape, size and depth to suit the
seaweed variety being grown as well as to optimise the use of the
available ocean area.
• Structural rope configuration suits requirements of efficient
automatic seeding and harvesting
• Platforms have monitoring equipment for environmental
conditions (temperature, Ph, salinity, turbidity)

10. Confidential
10
Seaweed Cultivation Strategy: 3 pillars
1. Cost Efficiency
I. Technology (choice of material: standard of the shelf, low cost, ease of
manufacturability, robotization optional)
II. Operations (automation of seeding, harvesting, data collection standard
operating procedures)
2. Maximizing Crop Yield
I. Technology
II. RT monitoring, data collection, processing and analyzing
3. Technology is scalable and flexibly deployable

11. Confidential
11
Impact cost on outlook market size
Notes:
- SeatechEnergy price per ton wet
seaweed $ 100
- Residue of SeatechEnergy digester
is fresh water containing fertilizers
–> desert greening

12. Confidential
12
Seaweed Cultivation Strategy Pillar 2 Maximizing Crop
Yield
“it’s all about sunlight, conversion into biomass and harvest index”
1. Technology
I. Optimizing growing conditions – in combination with monitoring- (sunlight, nutrients
etc.)
2. Realtime monitoring, data collection, processing and analysis (crop management, sunlight
permeability, water temperature and -composition
3. Traceability
- Enabler for certification (“organic”) of seaweed (food/medical and other)
- Quality control ensuring consistent quality
- Warrants sustainable farming (example no child labour)
4. Realizing the value chain (take out all valuable components one after another)

13. Confidential
13
SeatechEnergy Takalar Seaweed Farm
STE is in the execution phase of an off-take agreement to deliver 2,000 tons of
dried seaweed to an Indonesian Cotonnii producer.
Break even selling price and breakeven
volume : Based on a high level break-
even analysis the selling price can drop
with 47 percent to $ 0,91 per kg before
the business becomes loss making. The
off-take agreement does not contain a
penalty, should the Company not be
able to supply the 10.000 Mt per year.
The harvest can fall with 62% to 743 Mt
before the farm ends up in a loss-
making situation.

14. Confidential
14
SeatechEnergy Takalar Seaweed Farm
In a nutshell:
 600 platforms covering a sea area of 110ha
 Investment in platforms and facilities $ 3.0M
 Annual revenues $ 3.4M, EBIT 43%
 Multiple harvests per annum with cultivation period: 45 days
 Annual production 13.000 ton wet seaweed
 Revenues secured through off-take agreements with Indonesian
seaweed processors
 Location South Sulawesi, Takalar, Indonesia
 Local employment (225 FTE) and development
 There is demand for multiple farms => scaling up opportunities
 Pictures of the seeding – harvest cycle March 15 – April 30, 2022 on
following slides

15. Confidential
15

16. Confidential
16

17. Confidential
17

18. ASUR The concept - background
Confidential
18
• Converting cultivated seaweed or waste from seaweed processing into biogas
through digestion
• “Green” gas from biomass (up to 95% CH4) can be used in various ways (in
processing plant for heating, electricity generation (replacing diesel gensets
etc.)
• Seaweed can be mixed with other feedstock (municipality waste, palm oil mill
effluents etc.
• No land required for cultivation of the “feedstock”
• Output of the digester is desalinated water containing fertilizers suitable for
irrigation land or production liquid bio stimulants
• Modular concept (capacity from 1MW upwards)
• Desert greening: semi digested seaweed mixed with desert sand improves
hydroscopic properties of desert sand => output arable land

19. Confidential
19
The technology
Patented ASUR technology separates 4 stages of anaerobic digestion (hydrolysis,
acidogenesis, acetogenesis, and methanogenesis)
Benefits vs conventional digester:
• higher volume biogas
• higher methane content
• shorter retention time (reducing size and TCO of digester)
Multiple feedstock (municipality waste, palm oil mill effluent etc.)
Scalable system (1MW, 5MW, 10MW etc.) suitable for islands
Output is desalinated water with fertilizer
Developed, patented
Test digester built and operated for 2 years running on seaweed
Technology readiness level ~4

20. Confidential
20
ASUR Development

21. Introduction Seaweed 2 Green Biogas
21
ASUR Digestion

22. Anaerobic Digester Technology: Anaerobic
Sequential Up-flow Reactor (ASUR)
Confidential
22
Example 1 Ton Feedstock ASUR™ Conventional
Biogas *) Up to 200M3
25M3
Methane (CH4
) *) Up to 95% 40%
Carbondioxide (CO2) 5 to 15% 55%
Retention time 8 - 15 days 30 - 50 days
Hydrogen Sulfite (H2S) *) As low as 0.01% 0.33%
Process Min. 4 stages Singular
Feedstock Multiple Single
*) with specifically selected feedstock and ASUR™ configuration

23. Volatile Solids reduction comparison
Introduction Seaweed 2 Green Biogas
23
Extract from a scientific report published in September 2016
(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5036182/)
It is claimed that volatile solids reduction of between 20% and 25% is normal for anaerobic
digestion, the performance of the ASUR is extraordinary at over 90% !!
NORMAL DIGESTER ASUR

24. Confidential
24
Opportunities of seaweed farming
• Social impact: job creation for coastal communities (farm Takalar circa 225
people)
• The outlook for the demand for seaweed shows a significant future growth
• Increase supply of seaweed for existing and new applications (protein, animal
feed, human food, bioplastics, hydrocolloids, medicines, fuel).
• Environmental impact: seaweed farming and climate change: mitigation and
adaptation
• Economic impact
• Blue Carbon potential
• Implementing anaerobic digester technology: converting municipality waste,
seaweed and other organic materials into renewable energy. Maximizing the
value stream from seaweed by using the waste from seaweed processors.

25. Jakarta, 25th of August 2022
Jeroen Langelaan (Director):
 + 62 (0)812 8429 8896
 jeroen.langelaan@seatechenergy.com
THANK
YOU
QUESTIONS?