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Connecting the Future - Greenpeace UK

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<strong>Connecting</strong> <strong>the</strong> future: <strong>the</strong> <strong>UK</strong>’s renewable energy strategy<br />

Sustainable energy systems<br />

52<br />

POTENTIAL CARBON SAVINGS (million tonnes C) ADDITIONAL CARBON<br />

Electricity only Heat only Heat and SAVINGS from avoided<br />

Biomass source electricity landfill (mtce)<br />

‘Dry’ materials<br />

Sawmill conversion products 0.23-0.27 0.38-0.44 0.46-0.54<br />

and arboricultural arisings<br />

Energy crops (short rotation 0.03-0.04 0.04-0.06 0.05-0.08<br />

coppice, e.g. willow / poplar<br />

and miscanthus)<br />

Cereal straw 0.40-0.48 0.65-0.80 0.79-0.97<br />

Paper and card [3] 0.13-0.34 0.21-0.55 0.27-0.71 0.59<br />

Garden / plant waste [3] 0.14 0.23 0.32 0.13<br />

Waste wood [3] 0.91 1.50 2.05 0.45<br />

Sewage sludge (dry solids) 0.05-0.07 0.08-0.11 0.10-0.13<br />

Poultry manure - meat / birds 0.15 0.25 0.30<br />

(60% DM)<br />

Sub total 2.04-2.40 3.34-3.94 4.34-5.10 1.17<br />

‘Wet’ materials<br />

Poultry manure - egg laying flock 0.03-0.06 0.04-0.08 0.05-0.10<br />

(30% DM)<br />

Dairy cattle slurry (10% SM) 0.15-0.16 0.19-0.20 0.24-0.26<br />

Pig manures (10% DM) 0.04 0.05 0.06<br />

Food waste [3] 0.09-0.16 0.14-0.26 0.19-0.33 0.71<br />

Sub total 0.31-0.42 0.42-0.59 0.54-0.75 0.71<br />

Total 2.35-2.82 3.76-4.53 4.88-5.85 1.88<br />

Table 4.5 Potential annual emission savings from replacing grid electricity<br />

and heating oil with biomass<br />

Data supplied by D.Turley, Central Science Laboratory<br />

except [3] provided by James Vause, Defra<br />

Biomass offers <strong>the</strong> possibility of compensating for <strong>the</strong> intermittency of o<strong>the</strong>r<br />

forms of renewable generation, while producing almost carbon-neutral energy<br />

(Biomass Task Force 2005). If <strong>the</strong> <strong>UK</strong> is to move towards more sustainable<br />

energy systems in <strong>the</strong> future, biomass will have an important role to play in<br />

ensuring <strong>the</strong>ir reliable delivery. Action to promote <strong>the</strong> expansion of a viable and<br />

sustainable biomass industry in <strong>the</strong> <strong>UK</strong> is <strong>the</strong>refore vital in <strong>the</strong> short-term if<br />

<strong>the</strong> necessary longer-term strategic shifts in energy systems are to take place.<br />

This will involve an urgent change of emphasis in government policy from <strong>the</strong><br />

use of biomass for co-firing in conventional coal fired power stations to more<br />

local, smaller-scale CHP plants. And <strong>the</strong> establishment of viable supply chains<br />

between biomass producers and users. Given <strong>the</strong> range of players that would<br />

be involved, this will not be a simple task, but increasing <strong>the</strong> level of certainty

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