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Hi all,<BR>
<BR>
Footprint and insulation are two parameters we also have to take into account in Mauritius. Footprint is of utmost importance, generally speaking in small island development states (SIDS) land shall be devoted to crops or buildings, thus energy making processes requiring an extensive area are not convenient although of a low technology ... In tropical SIDS, mainly poor or emergent countries, with a high dependency to fuel importation, the problem is not to insulate tanks within AD plants but to increase as far as possible the energetic productivity of digested organic material, because of a limited amount. Therefore we are working on compact, thermophilic and auto thermal plants.<BR>
One of our very simple findings is that a significant part of kcal needed to heat or sustain the thermophilic phase can easily be produced with thermal solar panels set on the roof of tanks. One another technological track we are following is to differentiate the primary hydrolysis phase at a mesophilic stage with increased HDT, from the acidogenic, acetoclastic to methanogenic phase (all in one) at thermophilic conditions. This way of thinking is linked to the fact that considering the few organic input we have to deal with, co-digestion seems necessary and leads us to experiment some "strange" blendings ... <BR>
I will be interested to share on this, even if related to non tropical contexts !<BR>
Sheers<BR>
<BR>
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Jean-Luc Sallustro<BR>
Directeur associé<BR>
<BR>
<B><I>e.venture Ltd</I></B><BR>
42, Quartier du Baobab<BR>
Labourdonnais, mapou<BR>
Ile Maurice<BR>
<BR>
Tel: (230) 266 9494<BR>
Fax: (230) 266 8906<BR>
Mob: (230) 250 8336<BR>
<BR>
<BR>
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-------- Message initial --------<BR>
<B>De</B>: Alexander Eaton <<A HREF="mailto:Alexander%20Eaton%20%3calex@sistemabiobolsa.com%3e">alex@sistemabiobolsa.com</A>><BR>
<B>Reply-to</B>: For Discussion of Anaerobic Digestion <digestion@lists.bioenergylists.org><BR>
<B>À</B>: For Discussion of Anaerobic Digestion <<A HREF="mailto:For%20Discussion%20of%20Anaerobic%20Digestion%20%3cdigestion@lists.bioenergylists.org%3e">digestion@lists.bioenergylists.org</A>><BR>
<B>Sujet</B>: Re: [Digestion] High costs of biogass plants in Norway<BR>
<B>Date</B>: Fri, 3 Dec 2010 12:49:56 -0700<BR>
<BR>
HI Harold, <BR>
<BR>
I wanted to mention that Europe is dominated by insulated tank digesters, common in Germany, that come at a very high cost. We have presented proposals for lagoon digesters that have come in literally 10 times less expensive than competitive bids for Euro-style systems. I have done work with RCM-Digesters International, who specialize in these lagoon digesters, and have installed them in areas of extreme cold weather. I am confident that these will always come in less expensive than the tank-type systems. The benefit of the tanks often includes the use of less space (more of an issue in Europe than the U.S.), but that may not be an issue in Norway. RCM would be willing to examine a project of this nature if it were more than just one system. Let me know if you want me to facilitate. <BR>
<BR>
Best,<BR>
<BR>
Alex<BR>
<BR>
On Thu, Dec 2, 2010 at 9:39 PM, Scholwin, Frank <<A HREF="mailto:Frank.Scholwin@dbfz.de">Frank.Scholwin@dbfz.de</A>> wrote:
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Hej Harold, <BR>
<BR>
<BR>
<BR>
we are regularly analysing the biogas market and unfortunately see exact this development you describe. The prices did raise within the last 5 years by more than 50 %. <BR>
<BR>
<BR>
<BR>
But only taken from your figures the calculation seems to be really above also actual market prices. If you could send me some more information about the calculation of a single plant what is the basis for the large calculation for your country I could make my comments. When I take your 100.000 t – plant I would assume that (when you would generate electricity) investment costs would be in Germany when you construct no special treatment of the residues, no new storage for the residues for the winter time and when you generate electricity without gas upgrading and if you use cow manure about 5-7 Mio € (electrical capacity about 900 kWel). Adapted technically to very cold regions of your country probably 10 to 20 % higher. <BR>
<BR>
<FONT COLOR="#000000"> </FONT><BR>
<BR>
<FONT COLOR="#000000">So far best regards</FONT><BR>
<BR>
<FONT COLOR="#000000">Frank</FONT><BR>
<BR>
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<FONT COLOR="#000000">______________________________________________________</FONT><BR>
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<FONT COLOR="#000000">Prof. Dr.-Ing. Frank Scholwin</FONT><BR>
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<FONT COLOR="#000000">Bereichsleiter Biochemische Konversion</FONT><BR>
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<B>Von:</B> <A HREF="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A> [mailto:<A HREF="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A>] <B>Im Auftrag von </B>Harold leffertstra<BR>
<B>Gesendet:</B> Donnerstag, 2. Dezember 2010 16:05<BR>
<B>An:</B> <A HREF="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>
<B>Betreff:</B> [Digestion] High costs of biogass plants in Norway<BR>
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Hello all<BR>
<BR>
<BR>
Our Agency - Climate and Pollution Agencu made in 2010 a study of measures in the Agriculture sector to curb the emissions of climate gases. The production of biogass from manure was one of them, with reductions of methane and N2O from the storage of manure as well as a potential to reduce the emissions of CO2 by substitution of fossile fuels. Our consultant provided us with costs for the building and running costs, much higher than any other country in Europe, included neigbouring Sweden and Denmark.<BR>
<BR>
<BR>
For plants with capacities to treat 50 - 100.000 tonns of manure the following figures were given:<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
4.3 million tons of manure/year (about 30 % of the total amount of available manure) representing manure from farms in areas with a relative high density of animals: <BR>
<BR>
<BR>
<BR>
Biogassgeneration: 710 GWh/year <BR>
<BR>
Investment= 4.3 billion NOK = 540 million € <BR>
<BR>
Cost of Capital = 350 million NOK = 44 million €/year <BR>
<BR>
Transport, labor, maintenance and electricity; 215 million NOK = 27 million €/year <BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<B>Investment 126 €/ton manure annual capacity</B> <BR>
<BR>
Cost of capital; 10 €/ton manure <BR>
<BR>
Cost of labor etc: 6 € /ton manure <BR>
<BR>
<B>Sum: ca 16 €/ton</B> <BR>
<BR>
<BR>
<BR>
Plant 100.000 ton manure/year: <BR>
<BR>
Investment : 12.6 mill € <BR>
<BR>
Capital + other cost: 1,6 mill € <BR>
<BR>
<BR>
<BR>
Compared to the figures below, they are 60-100 % more expensive, even without assumed electricity generation. <BR>
<BR>
<BR>
<BR>
Knut Hjort Gregersen (2005) Centralised Codigestion Plants in Denmark - Present situation and future perspectives. Bioenergy 2005, Trondheim, Norge: <BR>
<BR>
<BR>
<BR>
Plant with annual capacity of 110.000 m3 <BR>
<BR>
<BR>
<BR>
Investment: 55 euro/m3 annual capacity <BR>
<BR>
Cap + other cost: 10 €/ m3 behandlet <BR>
<BR>
<BR>
<BR>
One of the possible explanations which is given, is that manufactorers from Central Europe are not very interested in the Norwegian market - low potential and calculate with hig costs in their bids. <BR>
<BR>
<BR>
<BR>
We would like your view points on the given figures; do they seem reasonable? <BR>
<BR>
Would manufactorers lower their prices to a "european" level? <BR>
<BR>
These high costs made the measure "Biogas" very costly" in relation to the obtained emission reductions, even when taken in consideration other benefits. <BR>
<BR>
<BR>
<BR>
Looking forward to your comments <BR>
<BR>
<BR>
<BR>
Harold Leffertstra<BR>
<BR>
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for more information about digestion, see<BR>
Beginner's Guide to Biogas<BR>
<A HREF="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</A><BR>
and the Biogas Wiki <A HREF="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</A><BR>
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<BR>
<BR>
-- <BR>
Alexander Eaton<BR>
Sistema Biobolsa<BR>
IRRI-Mexico<BR>
RedBioLAC<BR>
<BR>
Mex cel: (55) 11522786<BR>
US cel: 970 275 4505<BR>
<BR>
<A HREF="mailto:alex@irrimexico.org">alex@irrimexico.org</A><BR>
<A HREF="mailto:alex@sistemabiobolsa.com">alex@sistemabiobolsa.com</A><BR>
<BR>
<A HREF="http://sistemabiobolsa.com">sistemabiobolsa.com</A><BR>
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<PRE>
_______________________________________________
Digestion mailing list
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for more information about digestion, see
Beginner's Guide to Biogas
<A HREF="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</A>
and the Biogas Wiki <A HREF="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</A>
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