Agricultural abundance
Rukwa produces approximately 1.7 million tons of crops annually, generating 1.87 million tons of harvestable biomass residues — more than sufficient for a 12.50 MW plant. Maize alone contributes ~929,000 tons.
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A 12.5 MW biomass-based power plant in Sumbawanga, Rukwa Region, Tanzania — turning 1.87 million tonnes of agricultural residues into dispatchable, grid-ready green energy under a 25-year Power Purchase Agreement with TANESCO.
Wazawa Green Energy Limited (WGEL) proposes the development, construction, and long-term operation of a 12.5 MW biomass-based power generation plant in Sumbawanga, Rukwa Region, Tanzania. The facility will harness locally available agricultural residues — including rice husk, maize cobs and stalks, sunflower husk stalks and forestry biomass — to export approximately 72 GWh of green energy per year, supplied to the national grid under a 25-year Power Purchase Agreement (PPA) with TANESCO.
The project is strategically located in Rukwa Region, one of Tanzania's most agriculturally productive regions, producing approximately 1.7 million tons of crops annually. The region generates over 1.87 million tons of agricultural residues per year — far exceeding the plant's annual biomass requirement of 100,000–120,000 tons. This ensures a secure, locally-sourced, and competitively-priced fuel supply for the entire 25-year plant lifecycle.
Rukwa Region is currently being connected to Tanzania's national grid through the 400 kV Tanzania–Zambia (TAZA) Power Transmission Project, with full grid integration expected by February 2027. This milestone dramatically improves the bankability and power evacuation prospects of the plant, transitioning the region from an energy-deficit periphery to a fully-integrated node in the national transmission network.
Rukwa Region represents a convergence of agricultural abundance, transformational grid infrastructure and chronic unmet demand — making it an ideal location for a biomass power project.
Rukwa produces approximately 1.7 million tons of crops annually, generating 1.87 million tons of harvestable biomass residues — more than sufficient for a 12.50 MW plant. Maize alone contributes ~929,000 tons.
The 400 kV TAZA transmission line is under construction, with Rukwa's full grid integration scheduled for February 2027 — unlocking power evacuation capacity to the national grid and the Southern African Power Pool.
Despite the Sumbawanga substation's 30 MVA capacity and cross-border Zambian imports, the region suffers chronic power shortages affecting industry, agriculture and households. Only 184 of 339 villages (54%) are electrified.
The Tanzania–Zambia (TAZA) 400 kV high-voltage transmission project will connect Rukwa to the Tanzania national grid via the Iringa → Mbeya → Rukwa corridor. Once complete, power generated at Sumbawanga can be evacuated to the national grid and SAPP, dramatically improving the bankability and PPA attractiveness of the proposed plant.
Installed capacity stood at approximately 4,532.66 MW at the end of 2025, including 67 MW of cross-border imports. The mix remains heavily weighted toward hydropower and natural gas, creating well-documented vulnerabilities. Unlike solar and wind, biomass-fuelled generation is dispatchable — it generates reliably 24 hours a day, 365 days a year, providing firm capacity rather than intermittent output.
The plant's annual biomass requirement of 100,000–120,000 tons represents only 32–65% of the collectable biomass available from Sumbawanga District alone — confirming ample fuel security without competing with food security or existing biomass uses.
| District | Admin Centre | Key Crops | Annual Crop Production | Residue Potential | Collectable Biomass |
|---|---|---|---|---|---|
| Sumbawanga | Sumbawanga | Maize, Rice, Sunflower, Beans | ~560,000 t | ~809,000 t/yr | 80,000–120,000 t/yr |
| Nkasi | Namanyere | Maize, Sorghum, Rice, Sunflower | ~390,000 t | ~608,000 t/yr | 60,000–90,000 t/yr |
| Kalambo | Matai | Maize, Rice, Sorghum, Sunflower | ~290,000 t | ~455,000 t/yr | 45,000–68,000 t/yr |
| Region Total | — | All major cereals, oilseeds | ~1.7 million t | ~1.872 million t/yr | 185,000–278,000 t/yr |
Collectable estimates use conservative Residue-to-Product Ratios with a 10–15% collection efficiency factor to account for competing uses (soil carbon, livestock fodder, domestic cooking fuel) — consistent with FAO and MNRE Biomass Resource Atlas methodology.
| Residue Type | RPR | Primary District | Annual Residue (Sumbawanga) | Calorific Value (kcal/kg) |
|---|---|---|---|---|
| Maize stalk & cob | 1.5 | Sumbawanga, Nkasi | 525,000 t | 3,500–4,000 |
| Rice straw | 1.5 | Sumbawanga | 180,000 t | 3,200–3,800 |
| Rice husk | 0.2 | Sumbawanga, Nkasi | 24,000 t | 3,400–3,800 |
| Sunflower stalk | 2.0 | All districts | 80,000 t | 3,600–4,200 |
| Sorghum straw | 1.5 | Nkasi, Kalambo | 105,000 t | 3,300–3,900 |
| Cotton stalk | 2.5 | Seasonal | Supplementary | 3,800–4,500 |
| Forestry residues | Variable | All districts | Supplementary | 4,000–5,000 |
CFBC offers critical advantages over travelling grate and stoker boilers for the Rukwa Region context: fuel flexibility across moisture, size and calorific value, in-furnace emission control and proven multi-fuel operation at 12.5 MW scale in India, South-East Asia and Europe.
| Criterion | CFBC (Selected) | Travelling Grate (Alternative) |
|---|---|---|
| Fuel flexibility | High — accepts a wide variety of biomass with varying moisture, size and calorific value | Moderate — requires more uniform fuel |
| Efficiency | High — 30–35% thermal efficiency | Lower — 25–30% |
| Emission performance | Excellent — in-furnace SO₂ and NOₓ control | Requires more post-combustion treatment |
| Mixed fuel operation | Proven multi-fuel capability — can blend different agricultural residues | Limited blending |
| O&M requirements | Moderate — well-established maintenance protocols | Lower complexity but lower performance |
| Market maturity | Globally proven at 12.50 MW scale in India, SE Asia, Europe | Proven at small scale |
A 25-year REFiT-backed PPA with TANESCO, a Year-1 DSCR of 1.72 and carbon revenue upside from Year 2 — structured for development finance institutions and blended climate finance.
| Item | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| Gross Revenue | 6.30 | 6.40 | 6.50 | 6.55 | 6.63 |
| Operating Costs | 3.20 | 3.28 | 3.35 | 3.42 | 3.50 |
| EBITDA | 3.10 | 3.12 | 3.15 | 3.13 | 3.13 |
| Depreciation | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 |
| EBIT | 2.30 | 2.32 | 2.35 | 2.33 | 2.33 |
| Interest / Debt Service | 1.80 | 1.75 | 1.70 | 1.65 | 1.60 |
| Profit Before Tax | 0.50 | 0.57 | 0.65 | 0.68 | 0.73 |
| EBITDA Margin | 49.2% | 48.8% | 48.5% | 47.8% | 47.2% |
| DSCR | 1.72 | 1.78 | 1.85 | 1.90 | 1.96 |
| Cumulative Revenue | 6.30 | 12.70 | 19.20 | 25.75 | 32.38 |
Carbon revenue provides 5–10% additional upside from Year 2 onwards. Projections are indicative and subject to the assumptions set out in the Project Concept Note (June 2026).
Legal incorporation; site identification; resource assessment; feasibility study; concept note preparation. Company incorporated; concept note ready; site identified.
Land acquisition (25–30 acres); NEMC environmental screening; EWURA licence application; TANESCO PPA term sheet; lender mandates. Land secured; EIA commenced; PPA term sheet signed.
Full EIA completion; TANESCO PPA signing; DFI loan agreements; equity commitment; EPC contract award. PPA executed; financial close achieved.
Detailed engineering; boiler and turbine equipment order; long-lead item procurement. Equipment orders placed; civil drawings approved.
Civil and structural works; equipment installation; electrical works; switchyard construction. Plant physically complete; ready for testing.
Equipment testing; trial runs; synchronisation with grid; performance guarantee tests. Commercial Operation Date (COD) achieved.
Full commercial operation; PPA deliveries; O&M; carbon credit registration and verification. Stable 10 MW output; TANESCO billing active.
| Agreement | Counterparty | Duration | Key Terms |
|---|---|---|---|
| Power Purchase Agreement (PPA) | TANESCO | 25 years | Fixed tariff (REFiT); capacity payment; energy payment; fuel cost pass-through mechanism |
| Biomass Supply Agreements | Farmer cooperatives, agro-processors, aggregators | 5-year renewable | Minimum supply guarantee; indexed pricing; quality specifications |
| EPC Contract | Qualified biomass power EPC contractor (India/international) | 18 months | Fixed price; performance guarantee; liquidated damages for delay |
| O&M Agreement | Specialist O&M provider (first 3 years) | 3 years initial, renewable | Performance-based; availability guarantee ≥85% |
| Grid Connection Agreement | TANESCO | Life of plant | 33/66 kV interconnection; metering; balancing |
| Water Abstraction Permit | Tanzania Basin Water Board (Rukwa) | Annual, renewable | 0.8–1.2 m³/MWh; groundwater borewell; surface water supplementary |
| Land Lease / Title | Sumbawanga District Council / MLHHSD | 25 years + renewal | 25–30 acres; freehold or long-term lease; registered title |
Biomass power from agricultural residues is classified as carbon-neutral under the UNFCCC accounting framework. When displacing diesel generation and eliminating open-field burning, the project generates significant net environmental benefits.
By displacing diesel-based electricity and eliminating open-field agricultural burning, the project is eligible to generate Verified Carbon Units under the Voluntary Carbon Market — or Certified Emission Reductions under a bilateral Article 6 mechanism of the Paris Agreement.
Premium voluntary standard; highest price premiums ($15–25/tCO₂e); preferred by Swiss and European buyers. WGEL promoters have prior Gold Standard CDM project experience (Raus Power Limited, India).
Most liquid VCM standard; large buyer base; appropriate for biomass energy projects; typically $6–12/tCO₂e.
Government-to-government carbon trading — Tanzania is actively developing bilateral agreements with Switzerland, Sweden and Japan. Potentially the highest-value pathway.
If grid-connected post-2027, CDM methodology ACM0006 or AMS-I.D is applicable.
Shortage of biomass in dry season or supply chain failure
Diversified procurement from 3+ districts; 120–150 day fuel buffer; multi-crop fuel mix; long-term cooperative contracts
TANESCO payment delays or PPA renegotiation
PPA with government guarantee or escrow mechanism; DFI lender support; EWURA regulatory protection
Delay in TAZA 400 kV line completion beyond 2027
Commissioning timed to grid completion; interim offtake to local industrial buyers; TANESCO direct interconnection agreement
EPC contractor delay; equipment shipping; permitting obstacles
Fixed-price EPC with LD clauses; equipment pre-ordered at financial close; parallel permitting track
Biomass procurement costs above projections
CPI-indexed supply contracts; fuel cost pass-through in PPA; own aggregation centres reduce intermediary costs
Boiler performance below design; lower efficiency
Proven CFBC technology from experienced manufacturer; OEM performance guarantee; O&M specialist for first 3 years
Changes in tariff, tax or renewable energy policy
Stabilisation agreement with TANESCO/Government; DFI lender protection; international arbitration clause in PPA
USD/TZS volatility on debt service
Revenue denominated in USD (REFiT); USD-denominated debt; natural hedge
Seasonal water shortage affecting boiler operations
Borewell as primary source; 7-day storage reservoir; dry-season supply plan; water recycling
Community resistance to land acquisition or development
Community consultation from outset; transparent compensation; benefit sharing — employment priority, local procurement
| Approval / Licence | Issuing Authority | Timeline | Status |
|---|---|---|---|
| Environmental & Social Impact Assessment (ESIA) | National Environment Management Council (NEMC) | 3–4 months | To be initiated at Phase 1 |
| Generation Licence | Energy and Water Utilities Regulatory Authority (EWURA) | 3–4 months | To be applied |
| Power Purchase Agreement (PPA) | TANESCO | 4–8 months | Term sheet negotiations to commence |
| Grid Connection Agreement | TANESCO — Grid Department | Concurrent with PPA | To be applied |
| Land Allocation / Right of Occupancy | MLHHSD / Sumbawanga DC | 3–4 months | Site identification completed |
| Water Abstraction Permit | Rufiji Basin Water Board (jurisdiction TBC) | 2–3 months | To be applied after site confirmation |
| Building Permit | Sumbawanga District Council | 1–2 months | To be applied at detailed design |
| Import Duty Exemptions (equipment) | Tanzania Revenue Authority (TRA) | 2–3 months | Applicable under Renewable Energy Incentives |
| Carbon Project Validation | Gold Standard / Verra (VCS) | 6–12 months (post-COD) | To be initiated at commissioning |
Wazawa Green Energy Limited is a purpose-built renewable energy development company incorporated in Tanzania as a Special Purpose Vehicle for this project — bringing together engineers, finance professionals, legal experts and technology specialists with experience spanning India, Africa and international markets.
Mechanical Engineer (Kakatiya University) with over 40 years of distinguished experience in biomass, waste-to-energy and thermal power generation.
B.Com, MBA · 35 years of multi-country experience in renewable energy, with specialist expertise in Engineering, Procurement and Construction for solar installations.
Masters in IT/Telecom & Business Administration (Punjab Technical University); B.Sc. IT; PG Diploma in Cyber Law. 16 years in telecommunications, project management and technology operations.
Advocate of the High Court of Tanzania · Managing Partner, Mora Associates, Dar es Salaam. Over 15 years in private and corporate law — investment, international contracts, energy sector regulatory compliance and land procurement.
B.S. Computer Science Engineering — University of California, Davis. Brings Silicon Valley innovation capabilities, global strategic vision and technology-enabled business model expertise to the East African energy sector.

A high-conviction, development-finance-grade renewable energy investment in Tanzania's most underserved energy region — with abundant fuel resources, transformational grid infrastructure arriving in 2027, and a promoter team with 40+ years of proven biomass power execution experience.
Wazawa Green Energy Limited invites interested investors, development finance institutions, commercial lenders and strategic partners to engage in detailed discussions toward financial closure. Full financial models, environmental studies, site assessments and technical documentation are available upon execution of a Non-Disclosure Agreement (NDA).
Request the full data roomThis website summarises the Project Concept Note prepared by Wazawa Green Energy Limited (June 2026) for information purposes only. Financial projections, biomass estimates, carbon credit calculations and timelines are based on reasonable assumptions and publicly available data at the time of preparation and are subject to change. This does not constitute an offer to sell, or the solicitation of an offer to purchase, any securities. Prospective investors and lenders should conduct their own due diligence and seek independent professional advice. Wazawa Green Energy Limited makes no representation or warranty, express or implied, as to the accuracy or completeness of the information contained herein.