The Kitapilimwa Solar Park is a 50 MWp ground-mounted, grid-connected photovoltaic power plant proposed for development at Kitapilimwa village in the Iringa Rural District of Tanzania (coordinates: 7°39'30.30"S, 35°39'9.30"E). The project is developed by T. Resources Limited, a Tanzanian energy company, with feasibility engineering completed by Studio Santi Engineering S.r.l. The site is located 17 km from Iringa town on a geotropic plateau with excellent solar irradiation, low flooding and seismic risk, and established road access for construction logistics.
The developer holds a 99-year land title deed covering 378 acres, of which Phase 1 will utilise 177 acres. The remaining area is reserved for a Phase 2 expansion of equal size, offering investors embedded optionality. The plant will deploy N-type bifacial modules on single-axis trackers — technology selected to maximise energy yield in the Iringa highland climate — and will export power via a 33 kV double-circuit interconnector to the Iringa-Tagamenda 400/220/33 kV substation, 25 km away.
Electricity will be sold to TANESCO (Tanzania Electric Supply Company), the state-owned national off-taker, under a Power Purchase Agreement structured in accordance with EWURA model PPA terms. The project aligns directly with Tanzania's national energy expansion plan, which targets 5,000 MW of installed capacity and a 75% renewable share in the generation mix by 2030.
The plant concept design specifies best-available-technology components throughout. N-type bifacial modules on single-axis trackers are projected to deliver approximately 30% more energy than a comparable fixed-tilt installation, and are paired with string inverters selected for their precision monitoring capabilities and reduced balance-of-plant costs at scale. The grid interconnection solution — a 33 kV double-circuit line using 3×329 mm² ACSR cable and a 65 MVA 33/220 kV step-up transformer located within the Tagamenda substation — was identified as the most cost-effective option following a dedicated grid study reviewed by the Owner's Engineer.
| Plant Capacity | 49.93 MWp |
| Land Area (Phase 1) | 177 acres at 1,426 m altitude |
| Solar Module Technology | N-type bifacial crystalline silicon |
| Module Size | 625 Wp per panel |
| Number of Modules | 80,000 units |
| Reference Manufacturer | Jinkosolar or equivalent |
| Mounting System | Single-axis tracker (horizontal, N–S axis) |
| Foundation Type | Direct-driven steel piles (S355 JR, hot-dip galvanised) |
| Reference Tracker Manufacturer | Powerway Renewable Energy or equivalent |
| Inverter Technology | String inverters, 320 kWac per unit |
| Reference Inverter Manufacturer | Sungrow or equivalent |
| Effective Annual Irradiation (tilted plane) | 2,951 kWh/m²/year (Meteonorm 7.2) |
| Performance Ratio (annual mean) | 85.1% |
| P50 Gross Production (Year 1) | 125,332 MWh/year |
| HV AC Losses to Tagamenda Substation | 3.5% (from grid study) |
| Net Electricity Production | 120,945 MWh/year |
| Grid Interconnection | 33 kV double-circuit, 3×329 mm² ACSR cable, 25 km |
| Step-Up Transformer | 65 MVA, 33/220 kV at Tagamenda Substation (4D11 bus bar) |
| EPC Contract Type | Fixed lump-sum turnkey, including 2-year O&M |
A geotechnical investigation commissioned by T. Resources Limited in December 2019 assessed five trial pits to 3.0 metres depth, five Dynamic Cone Penetration (DCP) tests, and three Electrical Resistivity Tests (ERT), with laboratory analysis at the University of Dar es Salaam. The site geology consists of Neogene red-brown sandy earth, classified as clayey sand with low plasticity (67% sand, 23% silt, 9% clay). The angle of shearing resistance is 33.6°, allowable bearing capacity is 125 kPa or higher (factor of safety 3.0), and no groundwater was encountered within the 3.0 m investigation depth. Soil resistivity ranges from 125 to 628 ohm-metres, supporting effective electrical grounding design.
These conditions confirm that direct-driven steel pile installation is feasible without pre-drilling, reducing foundation construction time and cost. The Iringa District is classified as seismic Zone 2 (Peak Ground Acceleration 0.4–0.8 m/s²); structural design will incorporate these parameters. The topographic survey by Global Survey Company used a Sky Cruiser A22 fixed-wing drone with RTK GPS ground control, revealing gently rolling terrain with elevation variation of 1,603–1,647 m above sea level and predominantly south-facing slopes — optimal for solar energy capture in the southern hemisphere.
| Pile Material | S355 JR structural steel, hot-dip galvanised |
| Secondary Components | S350 GD / S280 GD grades |
| Pile Diameter | 100–150 mm (4–6 inches) |
| Pile Length | 2.5–4.0 m depending on loads |
| Wall Thickness | 6–10 mm based on structural requirements |
| Installation Method | Direct driving — no pre-drilling required |
| Coordinates | 7°39'30.30"S, 35°39'9.30"E |
| Altitude | 1,426 m (site average) |
| Terrain | Gently rolling; minimal grading required |
| Flood Risk | Very low |
| Seismic Zone | Zone 2 (PGA 0.4–0.8 m/s²) |
| Water Table Depth | 40–50 m (below investigation depth) |
Multiple independent databases were consulted to characterise the solar resource at Kitapilimwa, including Meteonorm 7.2, NASA SSE, PVGIS, NASA POWER SRB, SolarGIS P50, PVGIS-CMSAF, and SolCast P50. Annual Global Horizontal Irradiation (GHI) estimates range from 2,155 to 2,305 kWh/m²/year across these sources, indicating a robust and consistently characterised solar resource. The Meteonorm 7.2 dataset (2,303 kWh/m²/year GHI; 2,951 kWh/m²/year effective irradiation on the optimally tilted plane) was selected for energy yield modelling on the basis of bankability and alignment with TANESCO's preferred SolarGIS reference dataset (2,305 kWh/m²/year, 27+ years of measurement 1994–2022).
Energy yield modelling was performed using PVSyst, the industry-standard software for solar PV performance simulation. The resulting energy yield report was reviewed and agreed by the Owner's Engineer and is available as Annex 7 to the feasibility study. Inter-annual variability of the solar resource shows a 6.8% coefficient of variation. Total global uncertainty (meteorological plus system) is set at 7.0%, with component uncertainties of 1.0% for PV module modelling, 0.5% for inverter efficiency, 1.0% for soiling and mismatch, and 1.0% for degradation.
The Iringa region features a moderate tropical highland climate at 1,426–1,647 m elevation. Average ambient temperature of 17.86°C is optimal for photovoltaic conversion efficiency — significantly cooler than many equatorial solar sites — minimising temperature-induced power derating. Relative humidity averages 72%, ranging from 24.5% to 100%, requiring appropriate equipment protection strategies for outdoor electrical components. Wind speeds average 2.91 m/s (prevailing direction 140°, southeast), well within safe operational limits for solar installations and favourable for natural panel cooling. Atmospheric surface pressure averages 837.0 hPa, reflecting the site's highland elevation and necessitating equipment derating calculations in the final structural design.
| Average Air Temperature | 17.86°C (range: 8.21–28.46°C) |
| Daily Max Temperature (TMA) | avg. 26.97°C (max 34.80°C) |
| Daily Min Temperature (TMA) | avg. 15.56°C (min 8.20°C) |
| Relative Humidity | avg. 72.0% (range: 24.5–100.0%) |
| Daily Rainfall | avg. 1.93 mm/day (max 95.40 mm) |
| Wind Speed (10 m height) | avg. 2.91 m/s (max 7.03 m/s) |
| Global Horizontal Irradiance | avg. 248.75 W/m² |
| Beam Normal Irradiance | avg. 225.27 W/m² |
| Diffuse Horizontal Irradiance | avg. 89.43 W/m² |
| Infrared Irradiance | avg. 340.22 W/m² |
| Surface Pressure | avg. 837.0 hPa (elevation effect) |
| Prevailing Wind Direction | 140° (southeast) |
The topographic survey identified two hills on the eastern perimeter of the farm (near coordinates 7°38'57.20"S, 35°39'10.64"E) that may cause early morning horizon shading on solar modules, with sunrise effectively delayed to approximately 07:30–08:00 due to the intervening topography. A similar feature on the northwestern side may cause minor late-afternoon shading near sunset (18:50). These shading effects have been accounted for in the PVSyst energy yield simulation through the effective irradiation figure on the tilted plane (GlobEff), which already reflects shading corrections. The energy yield figures presented are therefore net of these site-specific horizon effects.
Operating a utility-scale solar project in Tanzania requires sequential approval from multiple authorities. An entity must first be registered with the Business Registration and Licensing Authority (BRELA) and hold a Tax Identification Number (TIN) from the Tanzania Revenue Authority (TRA). The developer T. Resources Limited has already satisfied these base registration requirements. The permitting pathway below identifies the key remaining consents, their issuing authority, and estimated lead times as documented in the feasibility study.
A critical land use issue is that the site is currently designated for agricultural purposes. The developer — who holds the land title deed and is willing to lease the site to the project at upfront costs of $350,000 — is responsible for reclassifying the land to industrial use with the local government authority before construction may commence. The Environmental Impact Assessment (EIA) process, administered by the National Environment Management Council (NEMC) under the Environmental Management Act 2004 (as amended 2019), is the longest-lead permit, with NEMC estimating 119 working days before the certificate can be granted. Environmental permitting is currently ongoing.
The project is eligible to register with the Tanzania Investment Centre (TIC), established under the Tanzania Investment Act 1997. While registration is not mandatory, TIC certification provides material benefits: VAT deferment on project capital goods, unrestricted repatriation of 100% of foreign exchange earnings, profits and capital, automatic work permits for five foreign nationals, access to TIC's one-stop facilitation centre for permits and approvals, and protection against non-commercial risks. Tanzania is a member of MIGA (Multilateral Investment Guarantees Agency) and ICSID (International Centre for Settlement of Investment Disputes), providing international-standard investment protection. Minimum registration capital is $500,000 for foreign-owned entities.
Additionally, the Tanzanian government provides import duty and VAT exemptions on principal solar components — modules, inverters, batteries, and regulators — reducing upfront capital expenditure on equipment procurement.
The project will sell electricity exclusively to TANESCO (Tanzania Electric Supply Company), a wholly state-owned limited liability company incorporated under Tanzania's Companies Act 2002. TANESCO is the country's vertically integrated national utility responsible for generation, purchasing, transmission, distribution, and sale of electricity across mainland Tanzania, and also exports power to Zanzibar and neighbouring countries. As a government-guaranteed off-taker, TANESCO provides the sovereign credit backstop that underpins the revenue stream for this project.
Tanzania's energy sector is supervised by the Ministry of Energy (policy) and regulated by the Energy and Water Utilities Regulatory Authority (EWURA) (technical and economic regulation). The Rural Energy Agency (REA) focuses on rural electrification and supports the project's contribution to national access targets. The sector is structured as a competitive Independent Power Producer (IPP) framework; the present project is an unsolicited proposal to be governed by EWURA's model PPA for solar generation facilities.
As of December 2023, Tanzania's total installed capacity was 1,938 MW (grid: 1,899 MW; off-grid: 39 MW), dominated by natural gas (63%) and hydropower (32%). The Julius Nyerere Hydropower Plant (JNHPP), a 2,115 MW project, was reported as substantially complete in the 2024/2025 fiscal year and is expected to more than double current TANESCO capacity. Despite this addition, the structural demand growth trend is strong: TANESCO estimates electricity demand is growing at 10–15% per year, and the government targets 5,000 MW of total installed capacity, with renewable energy's share rising from the current 61.8% to 75% by 2030. As of January 2025, 99.7% of Tanzania's villages (12,278 of 12,318) are connected to the national grid, reflecting rapid electrification that is driving sustained demand growth.
Tanzania's solar potential is high — between 2,800 and 3,500 sunshine hours per year and global horizontal radiation of 4–7 kWh/m²/day — yet installed utility-scale PV capacity remains very small (approximately 6 MW as of the study date), presenting a significant market opportunity. The government explicitly supports solar development through VAT and import duty exemptions on key components and has set a national renewable energy ambition of 6,000 MW by 2025.
Tanzania's macroeconomic fundamentals are supportive of long-term infrastructure investment. GDP is projected at approximately $83.5 billion for 2025, with a growth rate of ~6.1%, driven by tourism recovery, public infrastructure investment, and structural reform. The population of approximately 70.4 million is expanding at a pace that reinforces the structural demand case for new power generation. Inflation has remained within the central bank's 3.0–4.0% target range as of early to mid-2025. The Tanzanian Shilling (TZS) has stabilised at approximately 2,500–2,600 TZS per USD. Tanzania's investment protection framework — including membership in MIGA and ICSID, and anti-expropriation provisions under the Tanzania Investment Act 1997 — provides recognised international-standard protections for foreign investors.
The risk assessment below is based on information contained in the feasibility study and the authors' professional assessment of the Tanzanian IPP market. Investors are encouraged to conduct independent due diligence on all items. Risk ratings represent the authors' view at feasibility stage and will evolve as the project advances through permitting and financial close.
| Risk Category | Risk | Rating | Mitigant |
|---|---|---|---|
| Solar Resource | Actual irradiation below P50 projection | Low | 9 independent data sources consulted; 6.8% inter-annual variability is moderate; Meteonorm bankability well-established with lenders |
| Land | Agricultural-to-industrial reclassification delayed or refused | Medium | Developer holds 99-year title deed; reclassification is a standard Tanzanian procedure; developer has assumed responsibility and cost ($350,000) |
| Grid Connection | Tagamenda Substation capacity constraints or grid study amendments requiring redesign | Medium | Grid study by Owner's Engineer underway; 4D11 bus bar space pre-identified with local TANESCO manager; 33 kV option also being explored as contingency |
| Permitting | EIA certificate delays (NEMC 119-working-day timeline) | Medium | Environmental permitting already initiated; project has limited severe adverse environmental impact per feasibility assessment; TIC registration may accelerate other consents |
| Offtake | TANESCO PPA negotiation delays or unfavourable terms | Medium | EWURA model PPA establishes standardised terms; government policy explicitly supports solar development; TANESCO demand growth at 10–15%/year creates strong offtake rationale |
| Construction | EPC contractor performance risk; cost overruns | Low | Fixed lump-sum turnkey EPC contract; 2-year performance bond covering EPC and initial O&M period; liquidated damages for delays and underperformance; milestone-linked payment schedule |
| Technology | Single-axis tracker O&M complexity in highland environment | Low | Wind speeds average 2.91 m/s (max 7.03 m/s) — well within tracker operational limits; EPC contractor provides 2-year O&M; local company trained for long-term handover |
| Currency | TZS/USD depreciation affecting USD-denominated returns | Medium | PPA tariff structure (EWURA model) and currency provisions to be negotiated; central bank maintains active exchange rate management; MIGA membership provides political risk insurance access |
| Regulatory | Change in Tanzanian energy policy or regulatory framework | Low | Tanzania Investment Act 1997 guarantees against expropriation without compensation; ICSID membership; Energy Policy 2024 explicitly promotes solar development |
| Site — Shading | Eastern hill horizon shading reducing morning energy yield | Low | Shading accounted for in PVSyst GlobEff calculation; energy yield figures are net of this effect; single-axis tracker optimises production in partial shading conditions |
The project is currently advancing through its permitting phase in parallel with EPC tendering (budgetary stage) and PPA negotiation. Financial close is targeted for Q1 2026, with construction commencing immediately thereafter. Post-financial-close milestones are indicative based on typical EPC delivery timelines for utility-scale solar projects of this scale in East Africa.
Full feasibility study (Studio Santi Engineering, July 2025), grid connection study, geotechnical report, PVSyst energy yield assessment, and preliminary plant single-line diagram are available to credentialed investors. Financial close is targeted for Q1 2026.