Solar Energy Systems Projects
Design, supply and installation of solar power systems for homes, industries and institutions.
Green Technology · International Consultancy
Engineering a cleaner, smarter future for industries, municipalities and communities across Ghana and beyond.
Pretel Waste Technologies Limited was established in 2018 to provide total wastewater treatment and reuse solutions for Industries, Municipalities, Medical, and Communities — reducing pollution from the huge wastewater generated by industries, municipalities, hotels, hospitals, health centers, schools and communities.
In 2024, the company amended its name to Pretel Technologies and Consultancy Ltd (PTCL) after expanding by admitting new partners with local and international business experience, developing a new product line and international consultancy services in Ghana. PTCL brands and blends our unique green technologies with our international consultancy services — developing, marketing, and delivering sustainable solutions that protect the environment and empower communities.
Delivering total green technology and consultancy solutions that reduce pollution and drive sustainable growth.
To be West Africa's premier green technology and international consultancy powerhouse.
Megawatts Generated
Liters of Water Treated
Global Partners
Projects Delivered
PTCL brings together a synergy of local expertise and international investment power to deliver world-class green technology and consultancy solutions.
International investment partner powering large-scale green technology and renewable energy projects.
Our dedicated consultancy arm connecting local industry with global advisory expertise and standards.
Technology integration partner blending German engineering with African green infrastructure needs.
A full spectrum of green technology and consultancy solutions engineered for industries, municipalities and communities.
Design, supply and installation of solar power systems for homes, industries and institutions.
Total wastewater treatment and reuse solutions for industries, municipalities, medical and communities.
Green technology development and Technologien Integration Assistance (TIA) with our German partners.
Bridging local industry with global expertise — business advisory, partnerships and market entry support.
Water is the most valuable and sought-after resource in the world. For ethical and economic reasons, reusing treated wastewater is an absolute must be.
Treated domestic wastewater is ideal for watering gardens, flushing toilets or washing cars.
Intelligent solutions generate significant benefits through the reuse of industrial wastewater for a variety of production processes.
In addition to irrigation, the sewage sludge produced during treatment ensures an efficient increase in agricultural yield.
The reuse of industrial and commercial wastewater requires an absolutely competent approach from the first step, taking into account the highest quality criteria.
A robust and proven technology for removing suspended solids from treated wastewater.
A highly efficient method that removes contaminants and particles through a semi-permeable membrane filter.
Safe, environmentally friendly and sustainable — without the negative chemical impact of chlorination.
Sand Filters
RO Filtration
UV Reactor
Sewage sludge is a valuable source of energy and raw materials. In the spirit of a sustainable circular economy, the goal must be to use all resources from the sewage sludge — not only phosphorus, but also nitrogen, metals, minerals and the bound energy.
Our "KlimaPhoNds" project aims at complete energetic and raw material utilization of sewage sludge and the realization of material cycles for magnesium, nitrogen and especially phosphorus.
Whether MBR, SBR, MBBR or large-scale municipal plants — depending on your needs, we engineer the ideal sewage treatment solution for cities, hotels, holiday homes and industrial sites alike.
Holiday Home
Botanical Garden
Hotel
Marina
Shopping Mall
Farmhouse
Workers Camp
Villa
UniversityWe plan and produce the technology for your sewage treatment plant exactly according to your needs — for cities, municipalities and residential areas.
Due to the infrastructure work, up to 70% of the investment remains in the customer's country!
450,000 inhabitants
(70,000 m³/day)
65,000 inhabitants
(10,000 m³/day)
Select a request category below. You can either fill in our secure Google Form or send your request directly to us on WhatsApp for a faster response.
Request a proposal for wastewater treatment & reuse plant design, installation, or consultancy for your facility, hotel, hospital, school or community.
Get a tailored quote for solar energy systems — residential, industrial or institutional installations.
Connect with our International Consultancy Services team for business advisory, market entry and partnership support.
Have another question? Reach out through our general enquiries form or message us directly.
We invest in the communities we serve — from clean water access to green skills training for the next generation.
Reach out to our team for solar, wastewater treatment, green technology or international consultancy needs.