- Kariba's 2027 water allocation has fallen 36%, exposing Zimbabwe's continuing dependence on rainfall
- Guruve–Mazowe targets 550 GWh annually from wind, solar and storage, beginning in 2029
- The US$300 million investment still requires financing, final electricity contracts and grid integration approvals
Harare- Zimbabwe’s planned US$300 million Guruve–Mazowe renewable energy project would deliver an average of about 63 megawatts (MW) to the national grid once running, more than the 46 MW that all of the country’s independent power producers supplied combined on 27 October.
The project comes at a time of growing concern over Zimbabwe’s exposure to climate-related power shortages, after the Zambezi River Authority cut Kariba’s water allocation for 2027 by 36%. According to a joint announcement issued on 3 November 2026 by MISA Group’s Modaso Energy and Zimbabwean developer Tatanga Energy, the development would combine 128 MW of wind generation, 100 MW of solar power and a 50 MW battery with 100 megawatt hours (MWh) of storage. It is expected to produce about 550 gigawatt hours (GWh) a year from 2029. Once built, it would be the country’s first utility-scale wind farm, adding supply that depends on neither Kariba’s water levels nor Hwange’s coal-fired units.
The project's commercial development is taking place against a deteriorating rainfall outlook for the Zambezi basin. In October 2026, the Zambezi River Authority reduced the combined water allocation for power generation at Kariba from 36 billion cubic metres in 2026 to 23 billion cubic metres for 2027. Zimbabwe Power Company and Zambia's ZESCO will each receive 11.5 billion cubic metres, down from 18 billion cubic metres, following forecasts of below-normal rainfall associated with developing El Niño conditions. The authority expects usable storage to decline significantly during 2027 under its current hydrological assumptions, increasing the importance of diversifying electricity supply.
The reduction follows a recovery in Lake Kariba's water levels during the preceding rainfall season. According to the authority's October assessment, usable storage stood at 23.77 billion cubic metres on 14 October 2026, equivalent to 36.68% of live storage, compared with 8.25 billion cubic metres, or 12.75%, a year earlier. Despite this improvement, the authority projects usable storage could decline to approximately 5.83 billion cubic metres, equivalent to 9%, by December 2027. The forecast illustrates the vulnerability of hydropower planning to changing rainfall conditions, although actual generation will also depend on water management decisions and the operating efficiency of the power stations.
The electricity system's dependence on Kariba and Hwange provides the wider commercial context. According to generation figures reported by Zimbabwe Power Company on 27 October 2026, national output stood at approximately 1,455 MW, including 994 MW from Hwange, 415 MW from Kariba South and 46 MW from independent power producers. These figures represent generation at a particular point in time and do not establish annual production, although they demonstrate the dominant contribution of the two established power stations.
Zimbabwe's generation requirements have expanded alongside investment in mining, industrial activity and infrastructure development. The country also continues to depend on electricity imports during periods of domestic supply constraints. According to the Zimbabwe Energy Regulatory Authority's 2024 annual report, approximately 11,082 GWh of electricity entered the national transmission system that year, including imported supplies. Kariba contributed approximately 1,967 GWh, while Hwange's Units 7 and 8 supplied 4,918 GWh. The concentration exposes electricity availability to hydrological conditions, thermal plant performance and the availability of foreign currency for imports and maintenance.
Guruve–Mazowe's proposed configuration is designed to improve electricity delivery through the combination of generation technologies operating under different conditions. Although wind and solar facilities will have a combined nameplate capacity of 228 MW, electricity exports will be limited to a single 100 MW connection to the national transmission system. The battery will store part of the electricity generated during favourable periods and release it when required, increasing opportunities to deliver power during periods of higher demand.
According to the developers, the facility could generate approximately 550 GWh annually, equivalent to average continuous delivery of 62.8 MW. Measured against the 100 MW grid connection, this implies annual utilisation of approximately 62.8%, while the same electricity output represents an implied capacity factor of 27.5% against the combined wind and solar generating capacity.
MISA Group has indicated that the hybrid design could achieve grid utilisation above 65% following further optimisation and produce approximately 40% more electricity through the connection than a comparable single-technology configuration. The announced 550 GWh output currently implies a lower utilisation rate, making the final generation forecast an important component of the independent technical assessments required by lenders.
The proposed 50 MW battery, with 100 MWh of storage, could theoretically discharge at its rated power for approximately two hours before accounting for losses and operational limitations. Its contribution will depend on storage efficiency, battery degradation, generation patterns and electricity dispatch arrangements. The configuration can improve the timing of electricity deliveries, although extended periods of weak wind and solar generation could reduce output.
The financial value of the hybrid arrangement therefore depends on more than installed capacity. Reliable wind measurements, solar resource studies, energy storage performance and transmission availability will determine the volume of electricity delivered and the revenue available to service project debt.
The developers have estimated total investment at approximately US$300 million, with Standard Bank appointed as lead arranger for the project's debt financing. According to MISA Group's November announcement, a debt term sheet has been agreed and the proposed financing structure could involve non-recourse debt covering up to 70% of project costs.
At the estimated investment value, this would imply potential debt financing of up to US$210 million and an equity requirement of at least US$90 million under that illustrative structure. These amounts have not been confirmed as committed investment because financial close remains outstanding, with the developers targeting mid-2027.
The financing structure depends substantially on securing predictable electricity revenues. ZESA is expected to become the primary purchaser, with negotiations continuing over a power purchase agreement and a use-of-system agreement. ZimGreenCo, the Zimbabwean subsidiary of Africa GreenCo, has separately signed heads of terms to purchase part of the electricity under a proposed long-term contract, creating an additional commercial route through electricity trading.
The involvement of a private electricity trader could diversify the project's revenue and provide access to industrial customers and regional buyers through the Southern African Power Pool. The ultimate financial benefits depend on contract prices, settlement currencies, payment guarantees and the creditworthiness of the participating purchasers. These conditions will influence the terms on which international lenders are prepared to finance construction.
Zimbabwe's electricity sector has historically faced difficulties translating private generation proposals into completed projects, partly because of financing constraints and the risks associated with long-term electricity payments. Guruve–Mazowe offers an opportunity to assess the effectiveness of a structure combining a national utility, a private trader and regional electricity markets. The project remains subject to completion of the agreements required to establish that financing model.
The environmental value of Guruve–Mazowe rests principally on increasing electricity supply from wind and solar generation, reducing exposure to rainfall-dependent hydropower and potentially displacing more carbon-intensive electricity sources. The developers estimate annual avoided emissions of approximately 500,000 tonnes of carbon dioxide, based on assumptions about thermal generation displaced by the project.
The estimate corresponds to approximately 0.91 tonnes of avoided carbon dioxide for every megawatt hour of the projected 550 GWh output. The calculation is consistent with displacement of relatively emissions-intensive thermal electricity, although actual reductions will depend on the generation sources displaced, changes in electricity imports and dispatch decisions after commissioning.
The project's proposed annual generation would equal approximately 5% of electricity delivered into Zimbabwe's transmission system in 2024. This comparison provides a historical measure of scale, although national electricity demand and supply conditions are expected to change before the facility begins operating in 2029.
The development's physical footprint also requires environmental assessment. According to the project specifications, the wind farm will comprise 16 turbines with hub heights of approximately 130 metres, alongside a large solar installation, battery storage facilities and connecting infrastructure. Potential impacts include land use changes, construction traffic, biodiversity disturbance and the long-term management of renewable energy equipment.
MISA Group reports that the wind component has received an environmental certificate, land use approval has been obtained and a conditional Southern African Power Pool market licence has been secured. The developers are continuing environmental and social work intended to meet International Finance Corporation performance standards. These milestones establish regulatory progress, although the relevant impact assessments and community consultation outcomes would be required to independently evaluate the full environmental and social implications.
Tatanga Energy originated the development and has managed local engagement, permitting and land arrangements since wind measurements commenced in 2021. Modaso Energy subsequently redesigned the project to incorporate solar generation and battery storage, while MISA Group is supporting the financing process through its international investment network.
The sponsors estimate that construction could create approximately 1,000 jobs, with local workers receiving preference for general labour. The project is also expected to improve access roads used for turbine transportation and provide opportunities for technical training in wind generation and hybrid power systems.
These employment and infrastructure benefits remain projections. Their contribution to communities surrounding the development will depend on procurement arrangements, the proportion of jobs allocated locally, working conditions and the maintenance of infrastructure after construction.
The developers have indicated that no resettlement will be required, although the publicly available announcement does not provide the complete underlying land use and social assessment documentation. Independent verification of land agreements, community consultation records and environmental monitoring commitments would strengthen the assessment of the project's social impact.
Guruve–Mazowe's planned commissioning in 2029 places its contribution beyond the period covered by the latest Kariba water allocation. Zimbabwe will therefore continue managing its 2027 and 2028 electricity requirements through existing domestic generation, imports, maintenance programmes and generation projects capable of reaching operation sooner.
The project could contribute to the National Renewable Energy Policy's target of 2,100 MW of renewable capacity by 2030, with its 228 MW of wind and solar generation representing approximately 11% of that target. The contribution remains conditional on securing finance, completing construction and delivering electricity through the proposed grid connection.
The commercial and environmental case for Guruve–Mazowe is supported by an identifiable climate vulnerability, a proposed generation design and preliminary financing arrangements. Its projected electricity output and emissions reductions remain subject to technical verification, while the power purchase agreements and construction funding have yet to be concluded.
Zimbabwe's latest Kariba allocation demonstrates the continuing consequences of rainfall uncertainty for national electricity planning. The Guruve–Mazowe proposal offers a potential mechanism for reducing that exposure through privately financed renewable generation, with its contribution ultimately established by financial close, actual electricity delivered, verified environmental outcomes and the benefits realised by surrounding communities.
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