Showing just the changes made in the edit by Tom Counsell at 2011-04-27 17:24:58 UTC
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Title: 2050 Storage, demand shifting, backup costs Content: h1 Michael Clark changes (currently in the spreadsheet) h1 To do/issues * No costs for demand shifting * No cost range for interconnector * Does the gas standby correctly cause a charge for the gas it consumes? h1 Data Markal06 Power sector spreadsheet Hydro pumped storage is low cost and micro (<1.25MW) is high cost Interconnector is assumed to be the dummy variable for electricity imports Back up CCGT is referenced directly from: 2050 Conventional thermal plant costs h1 Tom Counsell methodology There are four elements that need to be costed: # Gas standby generation - done # Pumped storage - done # Interconnection - tbd # Electric vehicle demand shifting - tbd h1 Gas standby generation Initial set of costs taken from range on page 77 of MottMac10. These exclude interest during construction (IDC). Need to figure out what to do about that. Note that these costs are for a CCGT. It is possible that cheaper, but less efficient, OGTs would be used. Need to figure out a cost for those. h2 Size No particular evidence for 1GW typical size. MottMac10 use 830 MW. h2 Life MottMac10 suggests a 20 to 30 year operating life. Because of the very low utilisation if it is as a dedicated standby plant, we assume that any built 2010 to 2050 will last beyond 2050 (e.g., up to 40 year life). h2 Operating costs The MottMac10 has a variable and a fixed operating cost. Assuming that all this is actually fixed operating cost. h2 Low costs MottMac10 nth of a kind costs low. h2 High costs MottMac10 first of a kind costs high. h1 Pumped storage Initial set of costs taken from Annex EH-III v3 of Markal3.24Doc.This provides a single estimate, so currently added a +/- 50% to get a fuller range. Underlying data source is said to be the US EPA. Unclear whether cost of energy to store is factored into this. 2050 Pathway balances over a year, so I think we can assume no energy cost. h2 Comparators Dinorwig cost £420m (1983) to build and £5m (1983) to run[http://books.google.co.uk/books?id=z0Z3DxacC9IC&pg=PA457&lpg=PA457&dq=dinorwig+£425+million&source=bl&ots=O2Ixg4eXU8&sig=GT91GlMM9GLN4nISC3NL18Suuxo&hl=en&ei=9aJdTZq1KIqv8QOIpPWwCw&sa=X&oi=book_result&ct=result&resnum=5&ved=0CDcQ6AEwBA#v=onepage&q=dinorwig%20£425%20million&f=false] h2 Size Using 1.8 GW, based on the size of Dinorwig. h2 Life Assume these last beyond 2050. Markal3.24Doc suggests life of 50 years. h2 Operating costs For the variable component of the operating cost: arbitrarily assume that the pumped storage completely discharges once a week (52 times a year). h2 Low costs 50% below Markal cost. h2 High costs 50% above Markal cost. Category: 2050 pathway costs User: Tom Counsell Picture updated at: Signed off by: Signed off at: |