Compadre Coffee Roaster
Café Compadre (ACCESOL S.A.C.)
Compadre is a solar powered coffee roaster that reflects sunrays and concentrates them at one point in order to toast coffee beans.
Compadre is a solar powered coffee roaster that uses a Scheffler solar concentrator and a roasting drum to toast coffee beans. The product works by the reflection and concentration of the sunlight in a single focal point, where the roasting drum and coffee beans are located. This energy concentration rises the drums temperature above 200°C and coffee can be roasted without electricity or gas.
Currently working with farmers in Satipo – Peru.
The company is planning on reaching out to more than 220,000 families of smallholder coffee farmers across Peru. Interview with representative
Compadre have partnerships with different coffee houses, restaurants and food service providers such as Salvaterra, Amaz restaurant, Kilo, Zuma cold pressed, Airampo, M-Biomarket, Cafe Kubrea, Tan Gente, Samaca, Las Veci Nas, Comunal and Uber Eats.
They also have support from institutions such as Utec ventures, Startup Peru, PUCP, NESsT, Siemens, Autodesk and Sympra.
The solar roaster is not for sale. Since Compadre’s business model is not about the sales of the machine, but of the coffee roasted by it that is processed by the farmers. This model gives farmers more participation in the coffee value chain and increases their incomes. Interview with representative
Manufacturing is based on the market demand for solar roasted coffee. Interview with representative
No patent. Interview with representative
The roaster is not for sale therefore if an organization wants to use it, they must also use a business model where they pay higher incomes to farmers for roasting and processing the coffee. Interview with representative
One solar station has been installed so far. Interview with representative
Amount of product that can be roasted, measured in kilogram per hour
How long it takes to roast, measured in hours
The number of trays in the system
Can the temperature be controlled?
Temperature or temperature range for roasting the produce, measured in degrees Celsius
Design specifications:Interview with representative
- The solar hybrid coffee roaster is composed of two main parts: the Scheffler solar concentrator and the roasting drum.
- The solar concentrator harnesses the sun’s energy and reflects it to a single focal point located in the roasting drum’s aperture.
- Inside the roasting drum, the coffee beans are located. Here, they receive the concentrated solar energy and reach temperatures above 200°C in under 20 minutes.
- When clouds appear and decrease the incoming power, the roasting drums uses electrical heaters to make up for the energy deficiency.
- These electrical heaters are powered by the Photo-voltaic system installed in the location of the processing plant.
Technical support is given by the manufacturer and basic maintenance training is given to the users of the solar roaster (the farmers). Interview with representative
Available from manufacturer upon necessity. Interview with representative
Overall lifecycle is unknown. However, some parts can last 20 years while others need to be changed every 2 or 3 years. Interview with representative
Performance targets:Interview with representative
- Roasts 1 kg of coffee in 20 minutes.
- Can be installed off-grid.
- Requires no fossil-fuels.
- Low maintenance.
No vetted performance. Interview with representative
The coffee product quality is tested by Mikel Coffee. Interview with representative
No specified safety precautions.
The Compadre coffee roaster comes with a 1.5kWp Photo-voltaic system with 600A-h battery bank and a 2kW inverter. Interview with representative
Hadzich, M., Veynandt, F., Delcol, J., Hadzich, L. M., Pérez, J. P., & Vergara, S. (2014) Design of a Solar Coffee Roaster for Rural Areas. Energy Procedia, 57, 3215-3224
Compadre uses food grade materials for the machinery parts that are in contact with the coffee beans. They have also acquired sanitary and health certificates for the roasted coffee. Interview with representative.
Tests are carried out by coffee farmers in the central jungle of Peru. Master roasters and Q-graders are used to check the quality of the roasted coffee. Coffee cupping and roasting trials are among the methods used for evaluation. Interview with representative.
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