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Thursday, April 18, 2019

Biomass is not really "renewable" energy

The biomass section 
of the Drax power station
in England has a capacity
of 2.6GW. 

It produces about 4% of total 
UK electricity production
( 15% of all UK renewables output ).

Drax burns 4 million tons 
of wood pellets each year.

A Sitka spruce plantation 
yields about 
150 tons per acre 
after 40 years of growth.

So that 4 million tons 
of wood pellets is
equivalent to 
40 square miles 
of Sitka spruce 
plantation burned 
each year.

So, to make Drax 
"carbon neutral", 
it would have to be 
supported by a
1,600 square mile 
of spruce plantation, 
cutting and replanting 
40 square miles 
of the plantation,
each year.

That's not 
going to happen !

Drax will not be 
"carbon neutral".

In the short term, 
burning biomass 
tends to return CO2
previously absorbed 
by the biomass
from the atmosphere,
back into the atmosphere,
by burning the wood.

That's not CO2-free
"green" energy.