A sustainable energy solution for one of the most geologically active regions on Earth
Papua New Guinea is located on the eastern part of New Guinea, north of Australia, and contains multiple smaller islands within. The geographical structure features mountains, rugged terrain, dense valleys, and active volcanic areas.
The highlands are home to dense rural populations (85% of total), while the Southern Coast has more urban infrastructure. The lowlands have sparser populations due to dense vegetation and challenging soil conditions.
The climate remains tropical year-round with hot and humid conditions. Heavy rainfall often results in landslides and erosion, along with natural hazards like earthquakes, volcanic eruptions, floods, and cyclones.
The brilliant minds behind this geothermal energy solution
"The Kevin Way"
Systems Design Specialist
Design-Driven Presentation Lead
Digital Challenges Architect
Harnessing the Earth's natural heat through physics
The Earth's core heats rocks and water to extremely high temperatures (300°C+ in Papua New Guinea). In volcanic areas like Papua New Guinea's Ring of Fire, this heat is close to the surface.
Water trapped in porous rocks or fractures becomes superheated. Due to the high temperature and confinement, the water turns into high-pressure steam.
The steam is directed through pipes toward turbines. The force (pressure) of the moving steam spins the turbine blades, converting thermal energy into mechanical (rotational) energy.
The spinning turbine rotates magnets within a generator, creating electrical current through electromagnetic induction. This electricity is then distributed through power lines.
Identified sites with high potential for geothermal development
Located along the Willaumez Peninsula on New Britain Island. Features the active Garbuna Volcano which erupted in 2005. High reservoir temperature with potential for development.
Near the active Pago Volcano in Cape Hoskins area. Features hot clear water pools, mud pools, and small geysers. Neutral chloride spring with high temperature reservoirs.
Located 30km east of Mount Pago on New Britain Island. Very high reservoir temperatures make this a favorable prospect for further studies and development.
On Fergusson Island in the D'Entrecasteaux Islands. Features acidic springs, small geysers, fumaroles, boiling springs, mud pools, and silica terraces. Very promising.
160km southeast from Lihir. Includes hot springs, fumaroles, mud pools and sinter terrace. Promising with reservoir temperatures up to 250°C.
Currently uses geothermal energy for power generation for gold mining. Existing 50MW plant demonstrates Papua New Guinea's geothermal potential.
Current energy sources and future needs
In 2022, fossil fuels accounted for about 75% of total electricity generation in Papua New Guinea. The country is heavily dependent on petroleum and natural gas, with crude oil reserves estimated at 159.7 million barrels and gas reserves at 183.1 billion cubic meters.
Renewable energy makes up the remaining 25%, with hydropower accounting for 69.3% of renewable electricity and geothermal currently at 28.6%.
Papua New Guinea has one of the lowest electrification rates in the Pacific, with only 13% of the population having access to reliable electricity. The government aims to increase this to 70% by 2030, requiring about 300MW of additional capacity.
With a GDP of $32.86 billion and 40% of the population living in poverty, energy costs are significant. The average annual electric bill is $225 USD at $0.50 per kWh - one of the highest rates in the world relative to income levels.
Overcoming obstacles to geothermal development in Papua New Guinea
Rugged terrain makes infrastructure development difficult
Papua New Guinea's mountainous landscape and dense vegetation make building roads, power lines, and pipelines extremely challenging. Only 68% of the rural population lives within 2km of an all-season road, and the 30,000km road network is in poor condition. Additionally, location on the Pacific Ring of Fire means frequent earthquakes, volcanic activity, and tsunamis.
Seismic-Resilient Architecture: Implementing designs used in earthquake-prone cities like Tokyo and San Francisco. Modular, decentralized plants can reduce transmission needs. Helicopter transport for critical components to remote sites.
Significant initial investment required
Geothermal projects require substantial initial investment for exploration, drilling, and plant construction. Papua New Guinea's external debt of $18.7 billion makes financing challenging, and the long payback period discourages private investment.
Public-Private Partnerships: Leveraging international funding from organizations like the World Bank. Phased development starting with proven sites like Lihir Island. Revenue-sharing models with local communities.
Limited and unreliable power grid
Papua New Guinea's power grid experiences over 40 blackouts monthly. Most of the population lives off-grid, and existing power lines can't support additional capacity. There's also a lack of technical expertise for plant maintenance.
Build New Infrastructure: Treat this as an opportunity for economic growth, the likes of the Hoover Dam and Snowy Mountains Scheme. Implement smart microgrids in highland population centers. Comprehensive training programs for local technicians.
Land ownership and governance challenges
97% of Papua New Guinea's land is under customary indigenous ownership, creating complex negotiation processes. Political instability and corruption (ranked 127/180 on corruption index) add additional hurdles.
Community Engagement: Transparent benefit-sharing agreements modeled after successful projects like Morocco's Noor Solar Project. Bipartisan political support similar to Ethiopia's Grand Renaissance Dam project.
Compare the costs of different energy sources for Papua New Guinea
Detailed overview of Papua New Guinea's geothermal potential
Common questions about geothermal energy in Papua New Guinea
Geothermal offers several advantages over solar and hydro in PNG's context. Unlike solar which is intermittent, geothermal provides baseload power 24/7. Compared to hydro which depends on seasonal rainfall, geothermal is more consistent year-round. Additionally, geothermal plants have a smaller physical footprint than hydro dams or large solar farms, important in PNG's mountainous terrain.
Geothermal has minimal environmental impact compared to fossil fuels. The main considerations are:
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All academic papers, reports, and data sources used in our research and calculations.
View ReferencesOur detailed technical paper analyzing Papua New Guinea's geothermal potential.
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