Posts Tagged ‘hydro electric’

Maraig in the mist

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The Feasibility Study for a hydro scheme on the river at Maraig is underway. It’s taken over six months since the original enquiry, but after pulling together three other community groups and sourcing funding from Community Energy Scotland and Leader – we are finally on our way.

On a misty Friday morning, three engineers braved the midges and headed out to walk the river. Highland Eco Design won a tender to review four potential community hydro schemes. After visiting Swordale, Galson and Gress, they “saved the best to last”. We haven’t had any serious rain for weeks. I thought this would be a bad thing – they said no -it’s exactly what we need to see. The level of the river they saw was the level that SEPA will insist is retained as a minimum throughout the year.

We walked from the Scottish Water weir down to the shore then back up to walk another tributary. It’s clear that there are a number of options for a scheme. There is one big constraint though -SSE will only allow a 50kW generator onto the grid. Until the interconnector goes under the sea to Ullapool – which will be a few years away yet – 50kW is where it’s at. So the dilemma is whether to design a 50kW scheme now or to build a bigger scheme and constrain it to 50kW until the new cable is in place. If we build a 50kW scheme, do we build it on a smaller tributary, keeping the bigger stream clear for future or do we use the best stream and get the best output now? So many questions – and three engineers to think about it – one already has his thinking cap on!

Another hydro opportunity pops up

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Just when you’re really not getting anywhere with a project, another one comes along.

Scottish Water has spent a fortune upgrading the Water Treatment Works at Carragreich. This is now supplying purified water to the majority of North Harris and Scalpay. Last year a pipe was installed over the hill to Maraig; connecting the village to the new water main. In doing so, another of the remote, village-scale treatment works becomes redundant. And there’s the opportunity. Plenty of water tumbles down from behind the Clisham, now with no-one to use it. Maybe we can design a 50kW scheme that will get around the grid constraint that is holding up the bigger Bunavoneader project. All projects >50kW are on hold until the undersea cable and interconnector are in place… and who knows when that will be?

Community Energy Scotland has offered to put together a tender for a feasibility study for this river as well as two other potential community schemes on Lewis. Hopefully in a few months time we’ll have a better idea of the costs involved, and how productive the river could be.

Goal post shifting

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Just  when you thought it was all going smoothly, everything changes once more.

Our hydro scheme has been on hold for fast-approaching a year, whilst the UK government contemplates changes to the Feed-in-Tariff. The consultation is now over and we now hope for a June closure to the process. In the mean time, we thought out of courtesy that we should tell SSE that we won’t be exporting electricity onto their grid this year as planned because of the review. The response was along the lines of “that’s OK, we weren’t going to connect you until 2015 anyway.” This came as a bit of a shock. Lurking in the small print of our connection offer is the phrase “subject to any transmission connection works”. This little phrase now relates to a £300M sub-sea cable between Lewis and Ullapool. It’ll carry 450MW of renewable energy to export to the south. We just want 0.0002% of that capacity! We’re told that at the moment, the grid in Lewis and Harris is full. So that’s no more renewable energy from Lewis & Harris in the next three years! So much for those European targets on renewable energy.

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Review of FiTs hits hydro plans

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Reproduced from Friday’s Herald..

THE UK government’s review of feed in tariff (FIT) energy payments is estimated to have stalled £100 million of hydropower investment in Scotland. The British Hydro Association claims dozens of small and medium-scale developments have been halted and left in limbo since the Department of Energy and Climate Change announced a review of the FIT process last year.

While changes to payments for solar schemes have already been announced, no date has been set for a consultation into the hydro sector where Scotland is thought to hold up to 90% of the UK’s resource.

At the moment, hydro projects can get up to 21p per kilowatt hour generated through the FIT scheme. David Williams, chief executive of the British Hydro Association, said: “If the tariff isn’t too badly affected then hopefully these schemes which have been stopped will go ahead.

“But if it does get knocked down then some of them could fall by the wayside. We are just hoping and praying the review doesn’t hit the hydro tariff adversely.”

Scottish Renewables said the uncertainty meant several of its members had been unable to complete projects.

“Companies across Scotland, both large and small, are being affected by the delays and we must ensure that any future reviews are carried out in a much more transparent way that gives increased certainty to the industry.”

Another example is the £638,000 Bunavoneader scheme, by the North Harris Trust, which had its bank funding put on hold in the middle of last year due to the concerns.

The 100 kilowatt river scheme has the potential to generate £100,000 a year, which would be used for regeneration projects.

David Wake, energy development officer at North Harris Trust, said: “It is terribly frustrating.

http://www.heraldscotland.com/business/markets-economy/review-of-feed-in-tariffs-hits-hydro-plans.16594166

With you all the way!

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Some good news concerning finance, at last. The Bank of Scotland have changed their mind and are now willing to provide secured borrowing for the hydro scheme. This is excellent news, and pushes us closer to having all the finance lined up for the scheme.

Over the last few months it’s become clear that the high-street banks are missing a huge opportunity. Last year a report was published highlighting the potential for Scotland to generate renewable energy from its rivers. The Co-op Bank and Triodos Bank have been ahead of the game, and are merrily scooping up the majority of the community schemes that are being developed. They are offering loan finance, secured against the schemes themselves. The high-street banks are still asking for external security, and will not loan against forecast earnings of a scheme. Slowly they will catch up. Over the last few months, I’ve spoken to many banks; most of which realise the opportunity, but have out-dated policies on lending for renewables, that prevent them acting.

Luckily for us, the Trust’s bankers, Bank of Scotland are a little more enlightened!

Bunavoneader Hydro Scheme update

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It’s nearly five months since the last update on our hydro scheme. Since then we have been beavering away, trying to get the finance in place to build the scheme. We have a loan offer from the Co-op Bank, but it’s only for 67% of the project cost. This is a lot less than we had anticipated. This leaves us to source a further £200,000.

The rules for the government’s Feed-in-Tariff scheme have changed over the last year -this is the scheme that will pay us for creating green energy. It no longer allows the use of public funding for such community schemes. This is now regarded as a State Aid, which would give us unfair advantage over more commercial organisations. So, we are left to source the additional funding from private trust funds or commercial lenders.

Our first port of call was to the Bank of Scotland. Since it was established in 2003, the North Harris Trust has banked with BoS. We asked them for a secured loan for the hydro-scheme – and they refused us! Despite eight years of “in-credit” banking and huge assets to borrow against, despite the government putting pressure on banks to lend to small businesses - they said no. So we are now exploring every other avenue open to us, to source private funding to make the scheme happen.

The good news though is that we now have a Licence from SEPA to extract our water from our river.

Micro-hydro – what does it look like?

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the intake weir

In late January, I was lucky enough to attend a hydro briefing session at the Abernethy Trust’s centre at Ardgour, near Fort William. The Aberbethy Trust is a charitable organisation that runs a number of Outdoor Activity Centres. Last year they commissioned a 90kW hydro-electric scheme at their Ardgour site, so a number of community groups descended on the site to find out how they did it. Community Energy Scotland rounded up groups from Calendar, Applecross, Sleat-Skye, Mull, Creetown-Dumfries and Harris all of whom are in the process of developing schemes.

The Bunavoneader hydro-electric scheme will be of a similar size, so we were very interested in their designs and their choice of equipment.

a 90kW turbine and generator

The Ardgour scheme is on a very small river that drops 120m to the shore of Loch Linnie – Unlike the Bunavoneader scheme which has lots of water but only a 30m drop to the turbine house. The turbine is much the same size though, so it gives a good idea of what we will be siting below the bridge at Bunavoneader. The big advantage that the Ardgour site has is in the ground conditions.  They were able to build a track up to the intake with an excavator –no need to blast rock or ship in tons of infill. This goes some way to explain why the North Harris scheme will cost three times the Ardgour final bill.

Grid Connection

 

The scheme started generating in June. The ultimate aim is to build a private electricity grid around the site. This will feed their own electricity into the centre and all the surrounding staff houses. For now though, electricity is fed into the national grid and sold. Abernethy is one of the first schemes to find its way through the new  Feed-in-Tariff process. Six months on and they are hoping to get their first cheque .

The story to take away from the visit is that it is possible. Barry, like many of the community representatives is not an engineer or a hydro-developer, but by sheer persistence over a three year timeframe, has delivered a scheme that is now earning money for his charity. So successful has it been, he is now planning a second scheme in the next valley along.

Thanks to Community Energy Scotland for facilitating, Development Trust Association of Scotland for funding the trip, and Barry Edmundson from Abernethy, the brains behind the scheme.

http://www.gilkesenergy.com/projects/10/57/Abernethy-Trust.html

 http://www.abernethy.org.uk/ardgour/

Bunavoneader Hydro update

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In October we issued an Invitation to Tender (ITT) for the Design & Build of the Bunavoneader hydro scheme. During November a number of construction firms from across the UK came to look over the site. We have chosen a Design & Build contract to reduce the risk involved in managing multiple suppliers. Ideally we want one company to own the design and construct the scheme. The ITT also includes maintenance and support of the equipment once it’s up and running too.  

As part of the selection process, we are assessing the local content of the bids. The Trust wants to ensure that local businesses get some benefit from the project. Unfortunately we have no hydro-electric experts on island, so the project will be delivered by a joint venture of some form.  

Anyway, we have a number of bids to build the scheme, which we are currently poring over. Community Energy Scotland are helping us from a technical perspective. It’s hoped that we can appoint a partner to progress the project in February. Assuming we can get the finance sorted out in Spring, we hope to break ground in the Autumn.

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Bunavoneader Hydro update

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Water turbine

It’s a good few weeks now since we had our offer of grid connection. That’s now signed and payed for. We managed to secure funding to cover this from the C.A.R.E.S pot. Community Energy Scotland, who manage this pot, have now had to close the fund to new applications. The cupboard is nearly bare! Let’s hope the Scottish Government renew the funding, despite the economic conditions. May be then, they’ll stand a chance of meeting the demanding targets they’ve set for renewable energy generation in Scotland.

The planning approval arrived at the end of August. There are no onerous conditions. We do however have to:  

  • use grey wet-dash render on the walls of the turbine house and dark red corrugated sheeting on the roof
  • ensure noise does not exceed a defined threshold

The planning documents are still available at: http://planning.cne-siar.gov.uk/PublicAccess/tdc/tdc_home.aspx using reference 10/00302 

Now that planning is in place, we have been working on an Invitation to Tender. This is the specification for the design and build of the scheme. We hope to issue this at the start of October. We have compiled a list of suppliers from our previous contacts and the British Hydro Association’s web site. We are now in the process of contacting each company to ask if they would be interested in quoting. By the start of the new year, we hope to have appointed a preferred partner to help deliver this crucial income-generating scheme for the Trust.

Power to the People

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Historic Scotland's latest publication

Earlier in the year, a team from Historic Scotland came to Harris to talk to various people who are or have been involved in Hydro-power.  After extensive research, visiting sites throughout Scotland, a book was launched. This is now available to the public.

“The significant and early development of hydroelectric power in Scotland results not least from its combination of topography and weather. But this potential would not have been realised without the pioneering vision of a handful of architects, engineers and politicians whose personal energy and skills meant that Scotland has led the world in the development of this green energy source at various times in its history. The legacy of this pioneering development is a vibrant hydro sector which contributes to Scotland’s status as a net exporter of power to the rest of the UK. Scottish  Hydroelectric schemes are of national significance to the UK energy sector, generating around 12% of the gross power consumed in the UK in 2008. This is a spectacular Scottish success story. The hydroelectric power movement has led to the creation of many internationally important buildings and structures, demonstrating architectural as well as engineering achievement. This book traces the development of the industry through some of these key figures, from its roots in the aluminium industry through to hollow mountains with the capability to provide emergency power for whole of the UK. “ Malcolm Cooper Historic Scotland

The book is available FREE to download or can be ordered in hard copy at…

http://www.celebratingscotlandsarchitecture.org or by contacting Historic Scotland on 0131 668 8701

 Check out page 24 to see if you recognise the two local characters!