Transcript Developing Community Hydro Schemes in Oxfordshire

Developing Community Hydro
Schemes in Oxfordshire
Alison Wilshaw
Renewables Advisor
TV Energy
March 2010
Developing Community Hydro
Schemes in Oxfordshire –
Learning from the Goring and Streatley Project
• What can we learn from
the process of the Goring
and Streatley project?
• Can we use this
experience to assist the
delivery of future hydro
projects in our area?
• Guidelines to assist
communities in the
development of future
hydro schemes
March 2010
Goring and Streatley
Hydro Project
• Joint initiative between two communities; undertaken on
not-for-profit basis
• Project managed by one
community member
(Dave Holt) with support
from other members
• Run-of-river scheme, more complicated than
mill stream schemes
March 2010
Goring and Streatley Hydro – Stages in
the Development Process
• Feasibility Study (July
2006)
• Stakeholder meeting
(March 2007)
• Fundraising
• Outline Design Study
(completed March 2008)
suggested peak output of
246kW with three spirals
March 2010
Photomontage of Goring
Hydro Scheme
Goring and Streatley Hydro – Stages in
the Development Process
• Baseline Flood Risk Assessment (July 2008): slight
increase of flood risk during 100 year event
• Flood Risk Modelling,
(October 2009 –
March 2010)
• Environmental Survey
– river ecology, visual
and landscape survey
(June 2008 – June
2009)
March 2010
Goring and Streatley - what next?
• Share issue / fundraising
• Planning Application (SODC)
• Land Drainage Consent
and Impoundment
License
• Detailed design and
specification
• Selection of contractor for
construction
March 2010
TV Energy
Low Head Hydro Study
Summary of South East low head Hydro
Potential (assumes 2004 technology)
Technical
Potential [kW]
Practical
Potential [kW]
Short Term
Realisable
Potential [kW]
General Sites
9088
5320
1064 (24 sites)
Thames Weirs
4118
900
900 (5 sites)
Mills (<10 kW)
400
60
60 (8 sites)
13,606
6280
2024
TOTAL
Low Head Hydro Power in the South-East of England – A Review of the Resource and Associated
Technical, Environmental and Socio-Economic Issues, TV Energy, 2004
March 2010
Developing a community
hydro scheme – will it work?
• Basic data: Flow, Q and Head, H
• P (kW) = 7 x Q (m³/sec) x H (m)
• Schemes on the River Thames
are generally low-head
• Schemes over 10 kW may be
suitable for further study
• Several consultancies which
deliver low cost or free
prefeasibility studies
March 2010
Community hydro – key site data
• Proximity to sub-station
or load for electricity
(hotel, shops, houses)
• Landowner permission
• Access for construction
traffic
• Space at side of weir
• Existing mill stream
March 2010
Permissions
•
•
•
•
•
Involve the Environment Agency at earliest stages
Environmental Surveys
Flood Risk Analysis
Fisheries
Abstraction License;
Impoundment License
• Local Planning Authority
• Lease of land from
landowner
March 2010
Feed-in-Tariff for Hydro schemes
Scale
Year 1
Year 2
Year 3
Lifetime
< 15 kW
19.9 p/kWh
19.9 p/kWh
19.9 p/kWh
20 yr
15 – 100 kW
17.8 p/kWh
17.8 p/kWh
17.8 p/kWh
20 yr
100kW – 2 MW
11 p/kWh
11 p/kWh
11 p/kWh
20 yr
In addition to the above, a guaranteed export price of 3 p/kWh
Worked Example:
Head: 2m, Flow rate: 3 m³/sec
P = 7 x 2 x 3 = 42 kW
Annual generation at 50% capacity factor: 182,070 kWh
Installed cost @ c. £5000 / kW = £210,000
Annual revenue of scheme = 182,070 x (0.178 + 0.03) = c. £37,871
Simple payback 5.6 years
March 2010
Financing the project
• Project capital may be financed through:
– Equity in the project, through local share issue
– Loans, but need to be long term
– Finance packages negotiated with financial
management companies
– Part debt, part equity – banks may be more willing to
lend where equity can be used to leverage further
funds
– Direct investment, e.g. Eon, EDF, to enlarge their
renewables portfolio
March 2010
Setting up the legal structures
• Form a legal entity to access grants, loans, or to
issue shares
–
–
–
–
Private Limited Company
Industrial and Provident Society
Not-for-profit organisation
Co-operative group
• The type of structure depends on the purpose of
the legal entity
March 2010
Project Planning (1)
Year One
Q1
Technical
Q2
Q3
Year Two
Q4
Q5
Site
Survey
Q6
Q7
Q8
Detailed Design
Feasibility /
Outline Design
Environmental Survey
Surveys and
Planning
Planning
Flood Risk Analysis
Planning share issue
Financial
Share issue
Fundraising, loans and grants
Legal &
Management
Stakeholder
Meeting
Establish
Company
March 2010
Formation of Industrial and
Provident Society
Project Planning (2)
Year Three
Q1
Q2
Q3
Construction &
Installation
Technical
Year Four
Q4
Q5
Q6
Q7
Operation & Maintenance
Civil works
Surveys and
Planning
Financial
Capital
Income generation
Expenditure
Legal &
Management
March 2010
Power
Purchase
Business Management
Q8
Other examples of
community energy projects
• Torrs Hydro, New Mills, Derbyshire
• Baywind Energy Co-operative, Cumbria
• Westmill Windfarm Co-operative,
Oxfordshire
• Energy4All –
www.energy4all.co.uk
• South Somerset
Hydropower Group
March 2010
South Oxfordshire
Hydro Communities
• Dorchester-on-Thames
(Days Lock Weir)
• Henley-on-Thames
• Whitchurch / Pangbourne
• Benson / Wallingford /
Brightwell-cum- Sotwell
March 2010
Guidelines for Developing Community
Hydro Schemes in Oxfordshire
Thank you for listening
[email protected]
March 2010