www.zerocarbonbritain.org
UK greenhouse gas emissions can be
reduced to net zero.
• Without relying on future technology.
• Without major impacts on quality of life.
ZCB shows that
How?
Energy in ZCB
Key Question:
Can we
“keep the
lights on”?
The ZCB
Energy Model:
Based on ten
years of
real-world
hourly data
2002 - 2011
87,648 hours
0%
20%
40%
60%
80%
100%
19/5/11 21/5/11 23/5/11 25/5/11 27/5/11
Poweroutput(%)
region A
region B
0%
20%
40%
60%
80%
100%
19/5/11 21/5/11 23/5/11 25/5/11 27/5/11
Poweroutput(%)
all UK
regions
Land use in ZCB
• 65-70% = food production/agriculture (despite 42% imports).
• 85% of agricultural land = livestock.
• About 12% = forest (European average = 37%).
Land use today
Land use in ZCB
1. Food
2. Energy/fuel
3. Carbon capture
1. Food
• About a quarter of
today’s grazing
grassland is needed.
• All cropland still
used, but allocated
differently.
• Imports decreased
from 42% to 17%.
Current average UK diet
64% of adults overweight/obese
(Bates et al, 2011).
71% of deaths in 2010 from dietrelated
disease (WHO, 2013).
• Too much food.
• An unhealthy balance.
• Too much HFSS and high protein foods.
• Too little fruit, vegetables and cereals.
• Waste (30% in Europe (FAO, 2011)).
Agricultural GHG emissions today
~ 10%
of UK
total
Nutrition
Emissions
Land use
• Healthy,
balanced diet.
• Low GHG
emissions.
• No new
agricultural land.
ZCB scenario
• Eat only what we need.
• -50% waste
• Product switch.
• 5-6 portions
meat/dairy/eggs.
• 4 portions pulses/tofu.
• + Milk for tea/coffee.
• Nitrogen inhibitors.
Agricultural GHG
emissions = -73%.
ZCB average diet
Land use in ZCB
1. Food
2. Energy/fuel
3. Carbon capture
• Healthier
• Lower GHG emissions
• Less land
Land use in ZCB
1. Food
2. Energy/fuel
3. Carbon capture
• Healthier
• Lower GHG emissions
• Less land
• Support energy system
Land use in ZCB
1. Food
2. Energy/fuel
3. Carbon capture
• Healthier
• Lower GHG emissions
• Less land
• Support energy system
• Safe, proven, supported
• Biodiversity benefits
• Improved resilience
2. Growing energy and fuel
Total = 274 TWh/yr
3. Capturing carbon
• Double forest area.
• Restore 50% of
peatlands.
• Increased use of
wood products.
Balance GHG
emissions of
~ 45MtCO2e/yr
Net zero GHG emissions
Where next?
www.cat.org.uk | @centre_alt_tech
www.zerocarbonbritain.org | #ZCB