Solesyto is a water heating service consisting of a hybrid solar water heater and a monthly payment system provided by Energryn in Mexico. Its spherical structure allows the heater to receive both direct and diffuse solar radiation throughout the day. Additionally, the system can be connected to the household’s electrical system to heat water during the night or on cloudy days. Solesyto is constructed with 100% recyclable components, and a repayment system allows the customers to acquire a new system once the old one has accomplished its lifetime by returning it for recycling and acquiring the new water heating system with a discount for the material.
SDG 7: Affordable and Clean Energy
SDG 3: Good Health and Well-Being
Market Suggested Retail Price
Target Users (Target Impact Group)
Distributors / Implementing Organizations
Direct competitors include Solav Water Heating System.
Solesyto is manufactured in Mexico, with 100% non-metallic recyclable components and impact-resistant.
Intellectural Property Type
User Provision Model
This product can be requested directly from the manufacturer's website, where an email address and a phone number are provided. After a request, the product is delivered in 10 days to the customer's house.
Distributions to Date Status
System dimensions (m)
0.7 m height, 0.66 m diameter
Description of heater
Direct circulation heater
Description of auxiliary heating sources
Electricity; 1500 Wh, 12-120 V
Water output temperature (deg C)
Up to 40 °C (cloudy/partly cloudy day), 50 °C (partly cloudy/sunny day) and 60°C (sunny day).
Storage tank capacity (L)
Solesyto is a spherical-shaped hybrid water heater, designed to maximize the incident radiation during the entire day. The black sphere containing the water is surrounded by a transparent outer sphere that catches the radiation just like a greenhouse and maintains the water temperature. This product is specially designed to be resistant to saline environments with the presence of tartar and is maintenance-free.
Provided by the manufacturer.
Manufacturer Specified Performance Parameters
This product aims to facilitate access to hot water to 12 million Mexicans. The manufacturer aims to develop and patent each component of the system, in order to establish a technological entry barrier. The company also targets to manufacture this product with a 100% Mexican workforce, within national facilities and using national technology. Additionally, the company aims to leverage a disruptive business model, designed to the Mexican customers, with low cost and maintenance-free. The results of the company model are savings on up to 40% in costs associated with water heating by the customers, avoiding 540 kg of CO2 emissions per year with each Solesyto.
Vetted Performance Status
Users should be sure of placing the Solesyto over a 0.8-1.5 m tall base in order to avoid overheating and damage to the electrical resistance by low water content. This product eliminates the risks associated with conventional boilers, such as explosion or fire hazards.
Complementary Technical Systems
As water circulation is conducted by gravity, the Solesyto needs to be placed on a base of a minimum of 80 cm and a maximum of 1.5 m tall. The system includes the Grynshower watering can which helps to optimize water consumption. An electrical connection for backup, temperature sensors, and a timer are also included.
Academic Research and References
Compliance with regulations
This product is certified under the ANSE ESP-07 and NOM-003-SCFI-2000 for its use in Mexico.