Optimal central power station back up for wind – what is Claverton view?

The old power-station retention concept does require a lot of maintenance work to keep them open.
Long start up times are also an issue particularly if the turbine and the whole of the steam system is cold.
In comparison the engine based local CHP option can operate happily with minimal maintenance and with remote unmanned start up and operation.

The benefits from wind are clear they replace fossil fuel but are not effective as replacement capacity unless linked to a sufficiently large area of the world to ensure some wind all the time.

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The NASA Climate Scientist James Hansen – urgent warning

The NASA Climate Scientist James Hansen and an international team of researchers have very recently completed a paper for the Open Atmospheric Science Journal, concerning an in-depth analysis of Climate history at the Earth’s Polar regions, relating it to today’s warming conditions.

Published on 7th November 2008, the peer-reviewed research paper shows, by careful calculations on proxy data for the very distant past, that we should expect high Climate Sensitivity, the warming signal of the Earth in response to Greenhouse Gas accumulation above ground.

The team looked at the relative changes in Carbon Dioxide concentrations in the Earth’s atmosphere and showed that the rate of change showed strong negative “radiative forcing” clearly associated with the formation of the polar ice caps, and used that as a basis for calculating the Climate Sensitivity.

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Squaring the Circle on Coal – Carbon Capture (CCS)

By Chris Hodrien

2008 Claverton Conference Paper Synopsis: Huge global reserves of coal remain, well-distributed among relatively stable supplier nations, and its production is increasing. With the recent rapid increases in oil and gas prices, especially in the UK, it is again becoming the minimum cost option for power generation and heavy industry. Large thermal (steam turbine) powerplant is also the global utilities’ preferred generating option because of its predictability/reliability, operational characteristics, retrofit to existing powerplant sites and “fit’ to the existing grid structure.

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IGCC plus CCS: An Objective Analysis

By F.Starr

2008 Conference Paper Synopsis: The paper briefly describes the technology of conventional IGCCs for electricity generation and shows how such “precombustion plants” need to be modified to capture CO2. The main difference is that the raw gas from the gasifier has to be treated to produce a fuel gas containing more than 90% hydrogen. This adds to the complexity of the plant. But the main reason why the large scale construction of such plants is unlikely in the near future is the absence of a large domestic and industrial market for hydrogen. The paper therefore advocates the production of substitute natural gas, with CO2 capture, as being a more realistic option which can use the existing infrastructure

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Electricity Prices In The United Kingdom – Fundamental Drivers and Probable Trends 2008 to 2020

Fundamental Drivers and Probable Trends 2008 to 2020

Hugh SharmanThe mindless and self-congratulatory drift and chatter in the UK’s energy area during the last fifteen years, in particular the last ten, has the UK sleep-walking into brown-outs and/or severe energy rationing in less time than it takes to plan, engineer, license, procure, build and commission more than 30 GW in new, “clean coal” or nuclear plant by 1st January 2016.

Some gas capacity is on its way but this will be commissioned just in time for a World gas-supply crunch, sparked by the serial failure of Indonesia to meet its Far East contractual commitments, continued decline of gas production in Russia and Canada, the cap on new LNG exports from Qatar and exports from Norway and the continued reluctance of Iran to develop any gas export business at all. Most seriously of all, for UK (and Europe), it is the deliberately contrived investment policy of Gazprom to remain very tight on upstream capacity far into the foreseeable future, while dominant in down-stream infrastructure.

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