Small Hydropower Plant in Guatemala equipped with HOBAS Penstock Scroll down to learn more about the installation of a HOBAS Hydropower PIpeline DN 700 For a small hydropower plant in Pueblo Nuevo, Suchitepéquez.

The family-owned hydropower plant Peña Flor-Los Sisitos is located in the municipality of Pueblo Nuevo in Suchitepéquez, Guatemala. It was built at a height of approximately 900 meters above sea level, 15 kilometers from the two volcanos Santa Maria and Santiagito, the latter of which is still active. The numerous benefits of HOBAS Hydropower Products, such as minimum hydraulic loss due to the smooth inner liner of the pipe and the long service life of up to 100 years, convinced the owner Juan Pablo Cordon to use 802 meters of HOBAS Pressure Pipe for the penstock.

The Ossberger (WKV cross flow) turbine with a capacity of 0.6 MW is powered by the water coming from two creeks: Sis Chiquito and Sis Grande. It is led in underground PVC non-pressure pipes to the forebay, from which the HOBAS Pressure Pipe DN 700, PN 6 and PN 10 runs to the powerhouse crossing right through a coffee plantation.

HOBAS GRP Pipes DN 700 were supplied for the penstock of the hydropower plant Peña Flor-Los Sisitos.

Installation works of the penstock started in May 2014. The pipeline route is set on a slight incline and the alignment is relatively straight, except for one 18° bend around 125 meters from the powerhouse. On recommendation of the HOBAS Site Expert, the installation depth was lowered from the initially planned 0.2 meters to 1.6 meters, to achieve at least 1 meter of cover. This allows for the passive earth pressure to hold the pipe in place and therefore avoid laborious and cost- and time-consuming thrust block design for the bend.

Due to the rainy season, the pipe trench was excavated section by section.

Due to the rainy season, which sees 50 to 125 mm of rainfall per day, the trench was excavated section by section, laying the pipes and covering them before the rain could collapse the trench walls. Bedding material for the pipes came from nearby creeks and was manually shoveled onto tractor trailers, transported to the unloading point where it was manually unloaded, and wheeled to the trench. The works generally lasted until approximately 2:00 o’clock in the afternoon, until the rain would set in. An average installation rate of five pipes per day was achieved under these weather-restricted conditions and minimal use of machinery.

Thanks to a good construction team, Juan Pablo Cordon, who personally supervised the installation, and not least the HOBAS Site Expert who advised the team in optimally storing, transporting, manipulating and installing the products, the installation works were finalized to everyone’s content in September 2015. The pressure test was successfully conducted on October 24, and the hydropower plant went into service three days later, looking ahead to decades of green energy.

"I was pleasantly surprised with HOBAS’ superb GRP pipes, the outstanding sales and post-sales service, and the professional team. HOBAS is truly a top-notch global company. Thank you for making it happen for us at Peña Flor!" - Juan Pablo Cordon -

Project Details

  • Year of construction: 2014
  • Total length of pipeline: 802 m
  • Diameter: DN 700
  • Pressure class: PN 6, PN 10
  • Stiffness class: SN 5000
  • Installation method: Open trench
  • Application: Penstock for small hydropower plant
  • Client & contractor: Juan Pablo Cordon
  • Planner: Jorge Lamas
  • Advantages: HOBAS Expert on site, low friction loss due to smooth inner surface, assembly without machinery, corrosion resistant on the inside and outside
Created By
Jessica Maier

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