Sprawdzenie poprawności pisowni

Dzień dobry.

Bardzo proszę o pomoc czy poniższa wypowiedź jest jest poprawna?:
"What I would like to present to you today is a topic that is still relevant. Recycling is not only waste segregation, but also its rational use. Although waste incineration plants have bad associations, they are beneficial for the environment and not only. Waste incineration plants deal with thermal transformation in the waste incineration process.They often function as power plants or combined heat and power plants, producing electrical or thermal energy. Electricity production is generated from the heat of the exhaust gas, which transfers mechanical energy to an electricity generator through a turbine. In highly developed countries, this technology is used to reduce the amount of waste and produce electricity and heat used to power cities. The first incineration plant in the world was the Paddington facility built in 1870. There are currently 8 waste incinerators in Poland, as shown on the map. "

Dziękuję

....and not only that.
...then used to power cities.

1. Electricity production is generated from the heat of the exhaust gas, which transfers mechanical energy to an electricity generator through a turbine.
Dla mnie moze lepiej byloby.....mechanical energy 'through a turbine' to an electrical generator.

2. In highly developed countries, this technology is used to reduce the amount of waste and produce electricity and heat used to power cities.
...electricity 'which' is then used to power cities.

a od siebie jeszcze to przeoczylem:
...the heat of the exhaust gases,