Today, planet Earth is considered to be in "ecological deficit" due to our wasteful consumption; we use resources faster than they can be regenerated and produce waste faster than it can be absorbed.
Humanity uses the equivalent of 1.5 planets to provide the resources it uses and absorb its waste!
Solesyto is an excellent choice and is a 100% Mexican product. When you heat your water with Solesyto, you don't need to use gas. The sunlight is enough to run the boiler, so your gas consumption would be much lower.
In case of very cold temperatures, you have the option of switching on an electric switch to heat the water. Still, due to the advanced technology of the heater, the electricity consumption would not rise significantly.
According to WHO calculations, the average shower uses 8 litres of water per minute, but with the GrynShower, you can reduce your water consumption by up to 50%. The GrynShower has a controlled water flow of 4 litres/minute.
Here are some recommendations from UN-Water: