Saturday, 19 December 2009
Friday, 18 December 2009
Report: Carbon Capture Adds 50%+ To Power Cost ( large-scale projects and coal-fired power plants, in particular)
A new report from Pike Research of Colorado says the addition of carbon capture systems to power plants will add 50% to 70% to the cost of creating electricity for existing and future plants.
The report, titled “Carbon Capture and Sequestration: Drivers and Barriers, Technology Issues, Key Industry Players, Market Analysis and Forecasts,” adds that such increases in costs will be initially underwritten by governments but gradually passed on to ratepayers.
The report will be a wakeup call to many on the potential of such systems, which are targeted at large-scale projects and coal-fired power plants in particular, the latter accounting for half of the world’s energy-related CO2 emissions.
Pike estimates that the CCS industry will grow to revenue of $221.5 billion by 2030. The margins, however, will be low, hovering “close to zero,” and “even over the longer term, the CCS industry, heavily subsidized and equally heavily regulated, will produce relatively low profits. In addition, margins will vary widely along the vertical chain of CCS, from capture to transport to geological storage.”
However, as the report notes, predicting the future profitability is guesswork, since the price of carbon emissions (i.e, the penalties for emitting too much) “will likely be set initially by government fiat and, over the longer term, market forces that are impossible to predict with confidence.”
The full report is available for purchase by contacting: firstname.lastname@example.org
Thursday, 17 December 2009
The project has received $1.89 million funding from the Australian Government as part of the Asia-Pacific Partnership on Clean Development and Climate.
“This is the only biofuel project in Australia working simultaneously on all steps in the process of microalgal biofuels production, from microalgae culture, harvesting of the algae and extraction of oil suitable for biofuels production,” Professor Borowitzka says.
Professor Borowitzka says that due to the project’s success, construction of a multi-million dollar pilot plant to test the whole process on a larger scale will now begin in Karratha in the North-West in January and is expected to be operational by July.
“We have achieved production rates of 50 tonnes per hectare per year, over half of which is converted to oil. These high production rates are expected to increase at the new pilot plant due to the even better climatic conditions in Karratha.”
Professor Borowitzka says the cost of producing biofuel from algae has already dropped from $12 a kilo to below $4 in the past year, but the aim is to get it down to less than $1 a kilo.
Copenhagen — Africa needs new sources of clean energy, including a mix of wind and solar energy technologies, and should introduce 'climate innovation centres' to speed their uptake, energy experts have said.
Oliver Knight, energy advisor at the UK Department for International Development, said that the severe water shortages predicted for Africa as a result of climate change mean that the continent cannot rely on hydropower as its only clean energy source.
"Africa needs to diversify from hydroelectric power, which becomes less reliable with less rainfall," Knight said after addressing a session on low carbon energy sources at the UN climate change conference in Copenhagen (7-18 December).
Different mixes of technologies would be appropriate for different countries, he said. For example, a mix of wind, solar and geothermal energies could work in Kenya, whereas hydropower, bio-energy and geothermal would be more relevant for Rwanda, which has less wind and solar radiation.
But the continent does not need to launch a massive research and development programme in its quest for clean technologies, said Knight. Rather, it should use existing technologies and adapt them to local conditions and needs.
Friday, 27 November 2009
Thursday, 26 November 2009
- · Parabolic solar concentrator
- · Tracking system
- · Solar heat exchanger (Receiver)
- · Stirling engine with generator
An electrical generator, directly connected to the crankshaft of the engine, converts the mechanical energy into electricity (AC). To constantly keep the reflected radiation at the focal point during the day, a sun-tracking system rotates the solar concentrator continuously about two axes to follow the daily path of the sun.
The electrical output of the system is proportional to the size of the reflector, its optical performance and the efficiencies of the Stirling engine and the generator.
The attention of the global energy access situation report highlights that three billion people still rely on traditional biomass and coal; with a striking two million deaths per year associated with indoor burning of these solid fuels in unventilated kitchens. Almost two billion people need modern energy services by 2015 to accelerate Millennium Development Goal's achievement.
Saturday, 21 November 2009
A quick look at the maximum power point tracking (MPPT) and micro-inverter markets.
Demand for solar energy could be down as much as 17% on the year for 2009. This is the stark reality the industry is facing as it slowly emerges from the recession that has caused demand for energy across the world to drop for the first time in a half-century. While this may put a damper on power industry growth in the short-term, long-term energy demand worldwide is expected to double by 2050 and with concerns about climate change on the rise, the prospects for the solar power industry remain bright.
Thursday, 19 November 2009
- The yields of oil and fuels from algae are much higher (10-100 times) than competing energy crops
- Algae can grow practically anywhere, thus ensuring that there is no competition with food crops.
- Algae are excellent bioremediation agents - they have the potential to absorb massive amounts of CO2 and can play an important role in sewage and wastewater treatment.
- Algae are the only feedstock that have the potential to completely replace world's consumption of transportation fuels.
- Algae are already being used in a wide variety of industries and applications, and many newer applications are being discovered. Such a wide range of end-uses enable companies to produce both fuels and non-fuel products from the same algae feedstock
Wednesday, 18 November 2009
Monday, 26 October 2009
US energy use carries hidden costs of $120 billion
Sunday, 25 October 2009
This photo of their Camden Coal Fired station is only 27-32% energy efficient. This means that well over 60% of the heat liberated goes up the cooling towers to warm the air. That means they burn 3-4 times more coal to generate just electricity: This is the magnitude of their waste and one-dimensional thinking.
“It is essential that South Africa review our energy development plans, as recognized by a range of stakeholders, including mainstream business,” WWF South Africa climate change program manager Richard Worthington concluded
We have several web sites which will be developed in the next few weeks to show our thinking and strategy. Especially for central and Southern Africa. Watersons MG Ltd is the research arm. Sun Earth Energy is the gererator, waste reduction and facilitatior of more environmentally friendly fuels for Europe and the US.
We will add articles of interest as time allows. But firstly we are worried about the actions being taken to generate electricity in Central Africa and South Africa. Too many 'heavy' industrialists are influencing policy makers to burn Coal, Gas and even to promote Nuclear. Even massive Hydro shcemes have to looked at in the context of huge environmental impacts and the displacement of large numbers of the local population.
We are not too impressed with the 'simplistic' view regarding the so called 'bio-fuels'. To displace crop growing for food to make bio-diesel and suchlike to run cars is counter-productive.
We have a simple set of strategies to bring wealth to local regions, to increase the generation of electricity, to process more drinking water and to create employment.