CONGRATS TO OUR SUMMER E-BIKE HIRE WINNER: CLARE WEBB*
*This competition is now closed but you can still enter for the chance to win future competitions!
Community and localised energy supply can benefit consumers, renewable generators and network operators. However, there are still many commercial and regulatory barriers to selling the energy you generate directly to your local community. In the context of increasing grid constraints, we need to look at how local supply can help overcome this barrier. So where do we go from here?
Sign the 10:10 petition to buy your power direct from local wind, solar and hydro here.
Join us for the Community Energy Markets Conference, 25 June, Bristol.
This conference will address the next steps for community energy markets. We will examine what local supply projects are currently in place, what issues they have faced and how policy or regulation can help solve these problems.
Sessions include:
The most recent statistics from the Department of Energy and Climate Change show that North Dorset consumes 290.8 GWh/yr
The last census shows 30,397 households, only 11% of those being flats. Quite a few of these dwellings already have PV installed on their roofs but that number is likely to increase substantially when PV becomes so cheap that it will make better financial sense to install it than pay for all your electricity from the grid. This grid parity (without subsidy) is expected to come about as early as 2020. More than half of houses have close to south facing roof space and it’s reasonable to assume that 60% or so could accommodate a 4 kW array. These would generate around 65 GWh/yr
There are 3,800 businesses in North Dorset including farms. Not all will have their own roof space but all those steel sheds on industrial estates and agricultural barns have low pitched roofs that are viable for PV whatever their orientation. A quick look at Google Earth shows at least 50 big enough to take around 50 kW in the towns and farm barns would probably double that. So I estimate these could generate 5 GWh/yr.
There are already quite a few large and small ground mounted solar farms installed and enough space to generate the equivalent of the districts needs without impacting food production. A reasonably large solar farm is 10 MW generating 10 GWh/yr so 29 of those would equate to the district’s annual consumption.
There are at least 6 small 20 kW wind turbines (up to 20 m mast and 7 m blades) in North Dorset tucked away virtually un-noticed. The landscape could easily accommodate 50 small turbines without travellers and walkers constantly coming across them. They could generate 0.35 GWh/yr.
The River Stour and its tributaries already has 4 hydro turbines installed at mills and weirs with another 5 to be installed soon and potential for at least 6. They range from 3.7 to 89 kW and in total could generate 1.75 GWh/yr.
Now the elephant in the room, which is big wind power They may be very much out of favour with a vocal minority punching well above their weight but the fact is that a 2.3MW on-shore wind turbine is the cheapest source of renewable electricity. It would require 60 of these to generate the equivalent of all the district’s electricity and that could not be accommodated easily. I would say a maximum of 20 could be found a home and 10 would be more realistic and they could generate 48.5 GWh/yr
So North Dorset could generate equivalent to all its electrical need with;
65 GWh/yr from domestic roof tops
5 GWh/yr from commercial and agricultural roof tops
0.35 GWh/yr from small wind turbines
1.75 GWh/yr from hydropower
That leaves 218.7 GWh/yr to be found from a combination of large solar farms and wind turbines. Personally, I would like to see 10 large wind turbines, some of those to be clearly viewed from my back garden. That would mean 17 x 10 MW solar farms to take up the slack.
vince adams comments:
"Keith gives a cogent and totally understandable summary of how North Dorset with just a number of small steps could create 100% of its energy needs renewably.
Think what if every district, County did a similar exercise how simple going renewable could be and how we could see the end of coal, gas and nuclear power for ever.
This is now not in the realms of fairy stories its hard economic sense and will support reductions in climate change temps and give us better air quality all at the sametime.
"
January 19, 2015 a 6:42 pm
Three weeks ago we described (here) how members of Dorset Energized had been invited to investigate the possibility of installing a small Hydro Power electricity generating station on the river Brit in Pymore near Bridport.
Well things are moving along and to build momentum on the 22nd September at 7.00 pm a Tea & Cakes event is being held at the Weir itself, in Pymore, where you can find out more about what is being proposed. It will also be an opportunity to pledge money toward the development, an investment in a better, greener, cleaner, future.
So if you have the slightest interest in hydro power, community energy, or are just curious, please come along and meet the people involved – a mixture of local residents and people with experience of developing community energy projects.
Keith Wheaton-Green comments:
"Thanks for your questions Monty. If the management committee agree use of the river bank for a meeting next Monday, I hope you can join us and would appreciate it if you can ask further questions that I will answer as best I can. I want to emphasize that in my view, this has to be a community project and should not proceed further unless there is a clear will from the management company and residents to do so.
The drawing is representational only and the turbine house has to fit in with the visual aesthetic of the site. It would need to be placed above flood level, as would the generator.An abstraction license, flood risk consent and possibly impoundment license would be required from the Environment Agency. The project design and negotiations with the EA would be lengthy. The site owner (the management company?) has right of access and must give their permission. A resident of Pymore (Jonny) has publicised the Monday meeting to all in Pymore and Management company directors will – I presume – carry above average weight at the event. The power could go three ways from the 3 phase generator to three different properties where the grid connections would be made. There are numerous design choices. I believe the project should be community owned. Again, there are choices as to the structure.`There are lots of discussions that could be had. I believe Vince and I have the answers to most questions that can be thrown at us but we want to hear the views of the company and residents.
"
September 15, 2014 a 11:13 am
vince adams comments:
"Dear Monty, thanks for your comments which are really what we are exploring on Monday. We want to hear from everyone locally about their feelings, is it good idea , should we go forward together and explore all the problems. requirements and possibilities. I am sure Keith will be able to answer many of the technical questions and I am there to talk about community share schemes. But its your project and local desires that count.
"
September 15, 2014 a 9:54 am
Monty Crook comments:
"Interesting and fine in theory. No account seems to have been taken of what happens to a wooden top structure that it subject to major flooding at that point maybe 2-3 times a yeard.
Also, what permissions are needed and from whom. Who ‘owns’ the existing structures in the river at that point? The Environment Agency? Have they given any permission? What access rights would be needed and from whom? Has Pymore Villoage Management Company been approached? Where would the power produced ‘go’? Where would it be connected to the grid – on whose property? Who would own/manage the installation – and administer the finances? What track record do they have?
Monty Crook, Pymore
"
September 14, 2014 a 10:47 am
The rate of feed in tariff for each technology is reviewed every 3 months and if more than a certain designated megawattage is installed then that triggers a drop in the tariff.
This has just happened for hydropower, wind and AD. PV remains untouched this round. See http://www.british-hydro.org/news/decc_confirm_10_degression_for.html and follow the link.
For a hydro scheme you can pre accredit with Ofgem to fix you tariff rate at the current level if you have the required Environment Agency EA licenses but have not yet installed. Hydro schemes take years to develop due to the complexity of EA license requirements and a long time to install because of the bespoke nature of each project (no off-the-shelf-solutions as with solar and wind. So there is a large proportion of pre=accredited but unbuilt hydro schemes that have triggered this degression. Worse still, we are expecting another 10% degression in July 2015. When you add to this the recent rise from £135 to £1500 for EA licensing you can see that hydro is fast becoming unviable.
We develop these renewable projects because we know they are needed to mitigate climate change and we are environmentalists. But this government has constantly changed the goal posts and keeps the industry destabilised and performing well below its potential. Ed Davey has done the best he can at DECC and was until recently ably supported by Greg Barker (who fellow Conservatives accused of “going native” within DECC ie agreeing with Ed Davey’s line). But he has been partially undermined by George Osborne who has fossil fuel leanings and probably doesn’t want to see those interests undermined by a renewable industry that is too successful.
I would say from recent RE generation stats, you can see that with stable support and let off the leash, RE could kill off the fossil fuel industry quite quickly.
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CONGRATS TO OUR SUMMER E-BIKE HIRE WINNER: CLARE WEBB*
*This competition is now closed but you can still enter for the chance to win future competitions!
Keith Wheaton-Green comments:
"We need to recognize that hydropower doesn’t use water. Its not consumptive. It merely extracts some energy as the water falls back to the sea "
May 22, 2015 a 9:14 am