Gpg solar
-
Upload
jess-day -
Category
Technology
-
view
498 -
download
0
description
Transcript of Gpg solar
![Page 1: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/1.jpg)
Solar energy for home and community
![Page 2: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/2.jpg)
What we aim to cover
This meeting is about Solar Electricity (also known as photovoltaics or PV) with two main topics:
• Things you should know if considering putting PV panels on your own roof.
• The idea of a Solar Co-op which could enable people to share ownership of a PV system on (for example) a school roof and get a good return on their investment.
![Page 3: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/3.jpg)
What is involved
![Page 4: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/4.jpg)
Is your roof suitable?
• Ideally it faces due south (between south west and south east worth considering)
• Ideally the pitch (slope) of the roof is 300- 400
(200 - 500 might be OK)
• The roof needs to be free of shading by buildings, trees etc.
![Page 5: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/5.jpg)
Orientation and Pitch
![Page 6: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/6.jpg)
Planning Permission
• A PV system for a house will not in general need planning permission
• In a conservation area planning permission may be needed – check with planning authority
• On a listed building planning permission will be needed and may not be given
• For these last 2 cases PV tiles which look like slates might be acceptable
![Page 7: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/7.jpg)
What maintenance is needed
Almost none
• The panels should last at least 30 years
– and may last 50 years or more
• Output from the panels gradually falls over time but should be still at least 80% of original output after 25 years
• The inverter is likely to need replacement after maybe 15 years
![Page 8: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/8.jpg)
What it might cost
For a house - roughly £8,000 to £14,000
depending on:
• Size of system
• Type of panels used
• Scaffolding needed
• How competitive a quote you get
![Page 9: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/9.jpg)
Money you can make back from free electricity
• A 3kWp system can generate about 2,700 kWh (units of electricity) per year
• Each unit could be used in the house or exported
• Electricity that you use from the PV system saves you having to buy it from the grid
• You will still buy from the grid when you want to use more than the panels are producing (most obviously, when it is dark)
• Electricity prices are likely to go on rising
![Page 10: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/10.jpg)
Money you can make from Feed in Tariff (FIT) payments
43.3p for every kWh generated *
• whether you use the electricity yourself or export it to the grid
• Payable for 25 years from installation date
• Index linked, so will rise with inflation
• Income tax free
* for systems installed up to April 2012
![Page 11: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/11.jpg)
What money you can make from selling electricity to the grid
• At times when the panels are making more electricity than is being used in the house the surplus is exported to the grid
• For each kWh exported you get 43.3p FIT
+ 3.1p for exporting
Although output from panels is metered,
mostly exports are not metered, but “deemed” to be half of all that is generated.
![Page 12: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/12.jpg)
Finance summary – example system
• 3 kWp system
• Installation £11,000
• 2,725 kWh/year (maybe half your electricity)
• £1,180 FIT + £41 export = £1,221/year
• 9.01 years payback time
• Total received over 25 years = £20,521
(ignoring saving on electricity and index-link)
• ROI/year 7.10%
![Page 13: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/13.jpg)
Issues with insurance
• Some house insurers have not come to terms with PV installations and will be a problem
• Others are perfectly happy with them
You will need to check
![Page 14: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/14.jpg)
Selling your house
• It is too early to know what PV panels will do to house prices
• The new house owner gets long term benefits
• How much extra will they be prepared to pay?
![Page 15: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/15.jpg)
Picking an installer and what panels to install
• To get the FIT your installer and the panels used must be MCS registered.
• MCS is the Government MicrogenerationCertification Scheme
• This is a minimum standard
• Panels vary in quality of build, efficiency and price
• As with any building work get quotes
![Page 16: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/16.jpg)
It may not make sense or even be possible for you
• Don’t own a roof
• Roof faces East and West
• Roof is shaded by other buildings
• Expect to move in the next few years and might not recoup the investment
• Have not got £10,000 to spare
![Page 17: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/17.jpg)
Free systems
• There are companies who will install a PV system at little or no cost to the roof owner
• The roof owner gets electricity in return for leasing the use of their roof for 25 years
• The installer gets the FIT
• Too early to know what this will do to house sales
• The new house owner would get electricity but would have to accept the lease
![Page 18: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/18.jpg)
Examples of working Wind Energy Co-ops
• Baywind
- was set up in 1996 based on similar long established examples in Denmark and Sweden.
- Over 1,300 members and more than 2.5 MW of wind turbines funded by community shares.
• Energy4all
- a spin-off from Baywind, has helped set up 7 more community wind power co-operatives in England and Scotland
![Page 19: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/19.jpg)
Examples of working Solar Energy Co-ops
• Ovesco (Lewes, Sussex)98 kWp system running, funded by £300,000 share issue.
• Green Energy Nayland (Suffolk)15.5 kWp system on running on a Village School
• Bath Community Energy50 kWp + 28 kWp systems waiting for planning permission
• BrightonEnergy.org.uk50 kWp system has planning permission, 35 kWp and 10 kWp systems being planned
• Community Energy WarwickshirePlanning systems on Stratford and Warwick hospitals
• Thesolar.coop (Berkshire)Planning £1M share issue for multiple 50 kWp and 10 kWp systems
![Page 20: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/20.jpg)
What a Solar Co-op could mean for Penarth
• The Co-op leases roof space for 25 years
• The Co-op pays for PV installation
• The Co-op collects the FIT to pay back its investment plus a reasonable return
• The building gets free electricity
• If the building is council owned (like a school)
council tax is freed up to be spent on services
![Page 21: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/21.jpg)
Legal structure
• Energy Co-ops are in general legally Industrial and Provident Society Co-operatives
• They have one member one vote
(not one share one vote)
• Their only shareholders are their members
• They are run day-to-day by a management group which reports back to the membership
![Page 22: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/22.jpg)
Community shares issuesand dividend payments
• Energy Co-ops can raise money from their members with community share issues
• The shares have a fixed value and are not tradable • Shares can be sold only back to the Co-op• An annual dividend is paid on each share• No returns are guaranteed
(even the money invested) but…• On current projections a 4% dividend is reasonable• Investment of at least £500 kept in for at least 3 years
should allow 30% of the invested amount to be taken off your income tax liability.
![Page 23: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/23.jpg)
Choice of roof
• A larger installation gives economies of scale
(a single 40 kWp system will cost less than 10 systems of 4kWp each)
• A large flat roof can have PV panels mounted on frames, facing due south and angled at 300
• On community buildings the free electricity would be benefit the community
![Page 24: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/24.jpg)
How larger scale systems compare with smaller ones
The rate of FIT changes with size of installation
• Up to 4kWp (retrofit) 43.3p/kWp
• 4kWp - 10kWp 37.8p/kWp
• 10 kWp – 50 kWp 32.9p/kWp
• 50kWp – 150kWp 19.0p/kWp
![Page 25: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/25.jpg)
Where we are now
• Talking with Vale of Glamorgan council and Cardiff and Vale University Health Board about potential sites
• Firming-up our plans
• Collecting email addresses of potential members
• Registering Co-op (within 2 weeks?)
![Page 26: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/26.jpg)
What next
• Accept Co-op members (start in 3 weeks time?)
• Agree a site (by Christmas?)
• Select installer (by Christmas?)
• Get planning permission (January?)
• Get lease signed (January?)
• Community share issue (February?)
• Install system (by April 2012?)
• Collect FIT (and start working on the next site?)
![Page 27: Gpg solar](https://reader035.fdocuments.in/reader035/viewer/2022062405/5558b38fd8b42aa52a8b49db/html5/thumbnails/27.jpg)
Questions and discussion….