The diagram represents the data 
how
 geothermal energy is used to manufacture Change preposition
on how
electricity
    Use synonyms
Overall
, there are 5 stages in the whole producing Linking Words
electricity
 process, beginning with the pumping down cold Use synonyms
water
 and ending with the producing Use synonyms
electricity
.
      Use synonyms
To begin
, cold Linking Words
water
 is pumped down 4.5 km through Use synonyms
injection
 well.Correct article usage
an injection
Following 
Linking Words
this
, the Linking Words
water
 is implanted into the geothermal zone where hot rocks are injected into the production well .Use synonyms
Then
, the hot Linking Words
water
 is pumped up to the ground through the condenser.
     The Use synonyms
last
 two steps are made Linking Words
in 
Change preposition
apply
the 
above  ground.First of all, the hot Correct article usage
apply
water
 Use synonyms
is become
 steam in the Change to the active voice
becomes
has become
consender
.Correct your spelling
contender
sender
Following 
Linking Words
this
, the steam enters Linking Words
into 
the turbine and the turbine Change preposition
apply
make
 it Change the verb form
makes
spin
.Add an article
a spin
Finally
, the generator, which is powered by Linking Words
turbine
, produces Add an article
a turbine
electricity
.Use synonyms