CNG Developments in UK 10th April 2014
John Baldwin Managing Director CNG Services Ltd
john.baldwin@cngservices.co.uk www.cngservices.co.uk
07831 241217
CNG Developments in UK 1. CNG Services Ltd 2. Biomethane 3. High pressure gas grid 4. Dedicated CNG Scania tractor 5. Green gas cerLficates 6. Conclusions
CNG SERVICES LTD
CNG Services Ltd • Supports projects to inject biomethane into the gas grid
– Didcot, Poundbury, Vale Green, Doncaster, Minworth etc.
• Bio-‐CNG as a fuel for trucks
– Own UK’s largest CNG filling staLon – Sell Bio-‐CNG (20% biomethane)
We are gas engineers working in the Golden Age for Gas
Crewe CNG Sta>on • Filling dual fuel trucks for GIST/M&S, Brit European, Tenens hdp://www.youtube.com/watch?v=orxBtoXyjos
Largest grid supplied CNG staLon in UK – now selling biomethane via Green Gas CerLficates
BIOMETHANE Â
Annual Biomethane to Grid and RHI for 2012-‐2015
2 TWh of gas = 68 million therms = 136 million kg Equivalent to around 180 million litres of diesel
ReFood Widnes • Food waste feedstock • 100% gas to grid • Water-‐wash CO₂ removal plant • 2 bar gas grid • A major CO2 win for UK plc • Is there a beder gas to grid project on Planet Earth? Probably not…. Flow of biogas – EsLmated 2,000 m3/hr First gas to grid – EsLmated Q2 2014
Severn Trent Water Minworth • Sewage feedstock • 20% gas to grid – with exisLng 7MW CHP • Water-‐wash CO₂ removal plant • 20 bar LTS grid • Blending allowed so minimal propane
Flow of biogas – EsLmated 1,200 m3/hr First gas to grid – EsLmated Q2 2014
FOCUS FOR GAS
UK Transport Emissions • Transport accounts for 22.5% of the UK’s GHG emissions with each sector producing: o o o o
Cars – 14.1% HGVs – 4.1% MGVs – 3.0% Buses – 1.0%
Total Green House Gas Emissions by Final Consumer (mtCO2e)
900.0
CO2 from Transport 1990 to 2009
800.0 Waste Management, 59.0
700.0
Industrial Process Total, 56.9 Agriculture Total, 66.8
600.0
500.0
Residential Total, 169.8
Waste Management, 17.9 Industrial Process Total, 11.4 Agriculture Total, 51.9
400.0
Public, 31.9
Residential Total, 146.5 Public, 17.7
300.0 Business Total, 244.9
Business Total, 170.1
200.0
100.0
Transport Total, 139.1
Transport Total, 137.6
1990
2009
0.0
-100.0 Year Land Use Change
Transport Total
Business Total
Public
Residential Total
Agriculture Total
Industrial Process Total
Waste Management
28% reduc>on in CO2 emissions overall but Transport flat
Exports
HGV Sector Provides Best Opportunity for CNG
Fuel opLons in each sector
Cars are not the target for natural gas – trucks rela>vely few in number, limited other op>ons, use a lot of diesel and cause significant GHG emissions
UK HIGH PRESSURE GRID – THE £15 BILLION LEGACY FOR TRANSPORT
UK Gas System Local Transmission System
LTS is a vital na>onal asset -‐ ideal for CNG – it would cost >£15 billion to build NTS/LTS – these assets can help reduce diesel demand and reduce CO2 from trucks
Benefits of Using LTS • Lower pressure lip o Reducing electricity used in compression o Reduces number of stages of compression from 5 to 2
• Higher flow rates o Compressors run for less Lme, lower maintenance o Very high capacity per CNG staLon
• No leakage of gas in LTS o Higher pressure grids made with Carbon Steel pipes
• Dry Gas o No gas drier needed
The 6,000 km of 20 – 35 bar LTS means that 95% of major UK distribu>on centres are within 2 km of the ideal energy source is a vital na>onal asset
Energy Used in Compression
As the grid (inlet) pressure increases the electricity used in compression decreases and higher flow rates of above 2,000m3/hr are possible which reduces the running hours of compressor and/or provides very high capacity
Es>mated CO2 savings from LTS CNG • Well-‐to-‐Tank savings from LTS compared to Low Pressure grid are significant – No leakage of methane to get gas to the supply point = 11.5% – 80% less electricity for compression = 6% – No drier = 1%
• Compared to diesel, the Well to Tank for LTS CNG is around 10% lower • Tank-‐to-‐Wheel CO2 savings are 20% CO2 o This is based on dedicated Cng o Assumes 5% reducLon in efficiency compared to diesel
• Total CO2 reducLon from Dedicated CNG trucks supplied via LTS is around 30% compared to diesel Then there is biomethane on top
How Many Trucks can be Filled with CNG at an LTS Sta>on? • Flow-‐rates of 2,500 m3/hr from a single compressor • 1,900 kg/hr • CNG consumpLon – 3.3 km per kg of CNG • 1 truck doing 160,000 km per annum will use around go around 50,000 kg/Annum (50 tonnes/Annum) or around 140kg per day, 2 fills of 70 kg say • So 1 hour compression = 27 trucks per compressor • 1,296 trucks per day (assuming 4 compressors running for 50% each) • 25 CNG staLons can supply gas for around 28,000 trucks • Biomethane in 2015 = 136,000 tonnes = 2720 trucks • 10% blend = 27,000 trucks.. The LTS provides the gas capacity – each CNG sta>on costs around £1.5 -‐ £2 million. So for £40 million on CNG sta>ons we can have 30% of UK large trucks on Bio-‐CNG
DEDICATED CNG TRUCKS
Dedicated CNG Tractors • A 100% CNG tractor will save 25% CO2 on a ‘tank to wheels’ basis compared to diesel alone if same efficiency • Because CH4 contains less carbon than C12 diesel
• Assume 5% reducLon in efficiency, saving of 20% • Note – UK industry has 7,000 MW of spark ignited, dedicated natural gas engines • Used to be 35% efficient! Latest are 43% efficient • Dedicated gas best fuel for generaLng electricity – low co2, low emissions, highly reliable, very efficient • Gas trucks will follow same path
Dedicated CNG tractors are coming…..
Scania in 2003
In 2003 Scania UK converted diesel Series 3 to dedicated gas
Scania in 2003
In 2003…..we need 10 – 15 years said Scania …..
Scania in 2014
Dedicated CNG tractors are coming….first 5 in UK in May-‐July 2015
GREEN GAS CERTIFICATES
REAL Green Gas Cer>ficate Scheme • Designed to allow ‘tracking of biomethane from injecLon point to customer’ • Integrity -‐ no ‘double counLng’ • Separate from the gas to provide flexibility • Can only be used once
GGCS Launch Members • • • • • • • •
GGCS is the only UK scheme associated with the recent agreement to harmonise registry Green Gas Certificate rules ( hdp://www.greengasgrids.eu/info/news.html )
NaLonal Grid BriLsh Gas E.ON Thames Water (Didcot) Adnams Biogroup (Adnams) Milton Keynes City Council CNG Services Ltd hdp://www.greengas.org.uk/
AD Developer Sells Certs Direct to Gas Consumer Gas can be used to fuel trucks on CNG
Customer Sale of gas
Sale of ‘CerLficates’
Gas shipper
Purchase of biomethane energy
Organic Material
Processing via Anaerobic Digesters
AD Developer
Normal grid gas
Gas Distribu>on Network Inject gas into grid Clean-‐up plant and grid injecLon
Brit European • Provide transport services for JCB • Run 36 dual fuel diesel-‐CNG trucks • Purchase Green Gas CerLficates to demonstrate gas sourced from UK organic feedstock
Conclusions -‐ CO2 savings from LTS CNG and Dedicated CNG • Compared to diesel, the Well to Tank for LTS CNG is around 10% lower • Tank-‐to-‐Wheel CO2 savings are 20% CO2 o This is based on dedicated CNG o Assumes 5% reducLon in efficiency compared to diesel
• Total CO2 reducLon from Dedicated CNG trucks supplied via LTS is around 30% compared to diesel • With 10% Biomethane, saving becomes 40% • And Euro 6 – great for air quality compared to diesel trucks • Dedicated CNG is leading in the US and will be major fuel for trucks in UK by 2030, with a Biomethane fracLon • If we have shale gas, this will accelerate ship to CNG • Dedicated CNG is leading in the US and will be major fuel for trucks in UK by 2030, with a Biomethane fracLon The LTS grid is a fantas>c asset for UK plc