News & media

18 June 2026

How does a run-of-river dam work?

Francis turbines, penstocks, spillway: how Kinguélé Aval actually works.

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June 2026

Newsletter #8 — Towards commissioning

Completion of the structures, installation of electromechanical equipment and preparation of commissioning tests.

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12 May 2026

Kinguélé Aval passes 94% completion

Asonha Énergie reports 94% physical progress on the hydroelectric development.

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4 April 2026

Meeting the Begnoung eco-guards

Seven eco-guards watch over 1,917.5 hectares of protected forest every day.

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March 2026

Newsletter #7 — The dam takes shape

A look back at the mass concrete pours and progress on the composite earth-concrete dam.

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8 February 2026

Visit of the Minister of Energy

A ministerial delegation visited the site to review the progress of the works.

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15 January 2026

Andock Foula, a village connected to the grid

How electrification changed daily life for the village’s residents.

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December 2025

Newsletter #6 — Civil works complete

Powerhouse, stilling basin and embankment dam: the main civil works are delivered.

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3 November 2025

Training tomorrow’s technicians

Skills transfer and training of Gabonese teams in hydroelectric operation.

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22 October 2025

Biodiversity Action Plan signed

Asonha Énergie and ANPN formalise the creation of the Begnoung Upper Basin Nature Sanctuary.

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September 2025

Newsletter #5 — The site accelerates

More than 800 people mobilised and civil works ramping up.

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12 September 2025

Why a composite earth-concrete dam?

One third embankment, two thirds concrete: a design that cuts the carbon footprint by 23%.

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7 July 2025

A nursery serving the forest

How the revegetation nursery prepares the restoration of natural habitats.

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June 2025

Newsletter #4 — Focus on equipment

First penstock shells received and preparation for assembling the generating units.

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14 June 2025

Power purchase agreement confirmed

The electricity produced will supply the Libreville Interconnected Grid for 30 years.

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20 May 2025

The spillway, guardian of the dam

PK Weir design: up to 700 m³/s discharged, equivalent to a 50-year flood.

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March 2025

Newsletter #3 — The stilling basin

A close look at the stilling basin and the hydraulic safety of the structure.

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3 March 2025

Asonha Énergie strengthens its local teams

Recruiting and training Gabonese technicians ahead of the operation phase.

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14 February 2025

Daily life on site

Meeting the 800 people building the development in the heart of the forest.

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December 2024

Newsletter #2 — Phase II diversion

The river is successfully diverted, clearing the way for mass concrete pours.

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19 November 2024

Phase II diversion completed

A major technical milestone on the Mbei River, clearing the way for concrete pours.

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9 October 2024

Penstocks, the arteries of the powerhouse

Three 3.5 m pipes, each made of about a hundred welded steel shells.

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June 2024

Newsletter #1 — The diversion channels

Building the two temporary channels, future home of the bottom outlet.

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February 2024

Special issue — One year on site

A photo review of twelve months of works on the Mbei River.

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2 October 2023

First debt drawdown

Following financial close in August 2023, the first drawdown launches the financing.

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22 August 2023

Financial close of Kinguélé Aval

IFC, AfDB, EAIF and DBSA finalise the financing of Gabon’s first PPP dam.

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8 December 2021

Official start of works

Contractor Sinohydro begins construction of the hydroelectric development.

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