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Japanese fuel cell tech for Europe

Following the success of a half-price subsidy for CO2-busting fuel-cell heat and energy generators for homes, Japan is now poised to ship its attention to supplying the UK and Germany with this hi-tech next-generation energy source.

With over 5,000 fuel cells providing heat and energy for conventional homes up and down Japan companies such as electronics giant Panasonic are in talks with EU governments about the possibility of bringing these proven energy and carbon-saving devices to market in Europe and elsewhere.

Panasonic has described the interest in its commercial fuel-cell project from the German, Korean and UK governments as "intense", and is confident that Japan, as the first to start commercial sales for homes last year, will be the forerunner in bringing the technology into common use.

Fuel cells - a technology that has been around for more than 100 years - convert fuels such as hydrogen and natural gas into electricity through an electrochemical reaction. The resultant heat generated also warms buildings in gas-boiler-sized boxes known as cogeneration fuel cells.

The idea is to generate all of the heating and hot water and the majority of the electricity needed by a typical UK home, without the need to be connected to the energy wasteful national grid. Such efficient use of gas supplies can save the consumer around 25% of total energy costs, and reduce each home's CO2 emissions by up to 2.5 tonnes per annum, according to their makers.

They also claim customers can earn back the system's relatively high cost, running at present into thousands of pounds, within a few years through utility bill savings.

Panasonic and Toshiba, another manufacturer of home-use fuel cells in Japan, sell their cogeneration fuel cells through energy companies such as Tokyo Gas for around 3.1 to 2.2 million yen. Panasonic claims around 3,000 customers so far, including the Japanese PM's office.

Half that price is met by the government on each purchase, while other incentives bring the real price down for consumers to about 1 million yen (£7,300). Residential fuel cells already provide heat and energy for a few homes in Japan
"If the price falls again still, its popularity will gain momentum," general manager of Panasonic's fuel cell project, Mr Yasumasa Kurosaki, said. He added that the company aimed at fixing the per-unit price at around 500,000 yen, and get it even lower in the near future.

With economies of scale, Panasonic says, such devices could be competitively priced at around a couple of thousand of pounds by 2013. "With over 40,000 hours running time already logged, we have proven the safety, reliability and CO2 savings of our devices in the real world while sales are improving gradually.

We expect next year's sales to be up 20-30% on the last fiscal year," he said. The UK government has estimated that microgeneration products, such as fuel-cell combined-heat-and-power (CHP) units, have the potential to supply over one-third of the country's total electricity needs and help meet its environmental obligations.

However, high capital costs are still a major barrier to widespread adoption of fuel-cell technology. Fuel-cell makers have yet to turn a profit despite the massive investments in Japan and elsewhere around the world. But some are optimistic the gas-burning-without-combustion systems could be the answer to soaring fuel costs and lowering carbon emissions.

Pay-back time"Once fuel cells hit the US$5,000 (£3,300) mark, which we imagine will happen in the next 2 years, these units will become as compelling to home owners as energy-saving water-heaters and double-glazing," Tokyo- based entrepreneur and business analyst Terrie Lloyd said. "It will be hard to ignore a product that might save US$2,500 or more a year on energy bills."

The UK government meanwhile recently announced further support for the adoption of the technology with a money-back feed-in-tariff (FIT) for all fuel-cell owners that starts this April. Under the FIT, any household installing a fuel cell will receive a generation payment of 10p/kWh for all electricity generated over a 10-year period, plus an additional export payment of 3p/kWh for any electricity that is not consumed in the home and is fed back into the grid. Importantly, households will still retain the efficiency savings on their energy bills, providing an incentive to consume any electricity generated on-site, in preference to exporting to the grid. "On average, a home fuel user can expect about £360-a-year cash-back in addition to the energy bill savings from consuming the electricity generated on-site," according to the UK's leading fuel-cell maker, Ceres Power.

The company plans to go into mass production after completing field studies this year. Initial prices for its generators are not yet available but they are unlikely to match Japanese competiveness, says Mr Lloyd, as Japan has achieved a big start with widespread commercialization last year.

Despite high prices, some think the market is ready to explode. Tokyo-based research firm Fuji-Keizai Group has estimated Japan's market for fuel cells will expand nearly 100-fold from fiscal 2009 to 1.61 trillion yen in fiscal 2025 owing to uptake of the technology for housing and vehicles.

Fuel-cell systems for housing, says its report, will serve as a driving force for the market until 2018 when fuel-celled cars are expected to take over demand. Panasonic is bullish about possible exports of Japanese know-how to the UK and Germany where gas is generally cheaper than electricity per kW and solar cells offer a poor return on investment.

Mr Kurosaki said he was confident Panasonic could reduce costs, increase efficiency and extend the life of its units which now have a lifespan of 10 years to make an attractive package to overseas buyers and governments looking to cut CO2 emissions quickly.

With gas fuel for Japan's fuel cells more costly per kW than electricity in Japan, some analysts see Japan's nascent fuel-cell industry reaping benefits abroad. And with such high prices for gas in energy-poor Japan, take up of the new technology may well fizzle out along with the government subsidies that support the current market. Cutting capital costs and boosting sales to compete abroad seems the only likelihood of success for the Japanese makers if they are to scale up and be competitive without subsidies.

 

 
China going gas big time

The world is swimming in gas – wonderful, abundant, unconventional stuff that nobody counted on being able to extract from rocks and coal mines until a few years ago.Given the current glut and depressed prices, who does Shell think is going to buy its wares, if the oil major manages to pull off its £2bn takeover bid for Australian producer Arrow Energy?

The clue is in Shell’s choice of a joint venture partner for Arrow, PetroChina – the little-known company that was once the biggest in the world and serves the globe’s fastest growing gas market.China is remarkably unreliant on gas at the moment, generating the vast proportion of its energy needs from coal.

Only about 4pc of its energy needs come from natural gas.This is going to change. China has been snapping up oil reserves across Africa over the last 12 months and is so worried about heavy reliance on imported petrol that officials have proposed strict fuel economy standards and mileage restrictions.

Realising that this won’t be enough to feed the 1m new cars appearing on its roads every month, it has placed its hopes on more gas transport as well as electric vehicles. More than 18,000 Beijing city buses already run on gas rather than gasoline.To serve this nascent market, it has made developing coal-bed methane one of the 16 planks of its overall five-year plan to improve China’s economic outlook.

You only have to look at where Chevron, Exxon and Shell are sending the future gas produced from the massive Gorgon development in Australia under long-term contract – China, India – to realise that Asian nations are looking for a more balanced mixture of fuel supplies to serve their transport and electricity needs.Interestingly,

China actually has more coal-bed methane gas (50 trillions cubic metres) than Australia (15 trillion cubic metres). But what it lacks is the expertise to develop its resources. Two leading independent coal-bed methane developers are London-listed Green Dragon Gas and Houston-based Far East Energy.

In fact, China is so keen for companies to start taking advantage of this untapped resource that even foreign producers are allowed to sell the output at market prices instead of the state setting the price, as it does for conventional gas.

Enter Shell, with its proprietary technology to extract gas from coal bed formations for conversion into liquefied natural gas. The company wouldn’t tell me whether PetroChina gets to share its know-how under the terms of the deal, but given that’s likely to be a 50-50 joint venture, it would be pretty hard to keep this to itself.

The partnership with a Western oil major also has the benefit of making the takeover more palatable to Australian politicians. There has been some nervousness about China’s efforts to grab its natural resources in the wake of Chinalco’s failed tie-up with Rio Tinto.

 
Deserttec the biggest project yet

The Desertec Industrial Initiative aims to supply Europe with 15% of its energy needs by 2050. Companies who signed up to the $400bn (£240bn) venture include Deutsche Bank, Siemens and the energy provider E.On.

The consortium, which will be based in Munich, hopes to start supplying Europe with electricity by 2015.

Desertec Industrial Initiative aims to produce solar-generated electricity with a vast network of power plants and transmission grids across North Africa and the Middle East.  

Concentrating Solar Thermal Power (CSP) plants are ideal for providing secure solar power. These types of power plants use mirrors to concentrate sunlight to create heat which is used to produce steam to drive steam turbines and electricity generators.

Heat storage tanks (e.g. molten salt tanks or concrete blocks) can be used to store heat during the day to power steam turbines during the night or when there is a peak in demand. In order to ensure uninterrupted service during overcast periods or bad weather (without the need for expensive backup plants), the turbines can also be powered by oil, natural gas or biofuels.

As an interesting side effect (and of great benefit to local people), waste heat from the power-generation process may be used to desalinate seawater or to generate cooling. The main reason for favouring CSP over photovoltaics is its ability to supply power on demand for 24 hours a day.

PV is more expensive than CSP and needs expensive systems for storing electricity, such as pumped storage. If pumped storage facilities in Europe were to be fed with relatively large amounts of electricity from fluctuating sources from MENA, there would be a need for more power lines and those lines would be under-utilized since they would operate at full capacity for only a few hours each day. 

HVDC transmission is very much more efficient than the use of hydrogen as an energy vector: Using High Voltage Direct Current (HVDC) transmission lines, loss of power during transmission can be limited to only about 3% per 1000 km. Although there would be transmission losses up to 15% between MENA and Europe, they are more than offset by the fact that levels of solar radiation in MENA are about twice what they are in southern Europe.

Furthermore there is much less seasonal variation in levels of sunshine in MENA than there is in Europe. The technologies needed to realize the DESERTEC concept have already been developed and some of them have been in use for decades. HVDC transmission lines up to 3 GW capacity have been deployed over long distances by ABB and Siemens for many years.

In July 2007 Siemens won a bid to build a 5 GW HVDC System in China. At the World Energy Dialogue 2006 in Hanover speakers from both companies confirmed that the implementation of a Euro-Supergrid and an EU-MENA-Connection is, technically, entirely feasible. 

Solar thermal power plants have been in use commercially at Kramer Junction in California since 1985. New solar thermal power plants with a total capacity of more than 2000 MW are at the planning stage, under construction, or already in operation.

The Spanish government guarantees a feed-in tariff of about 26 Eurocent/kWh for 25 years, thereby establishing favorable business conditions for CSP in their country. Where there is more sunshine, it is possible to realize cheaper feed-in tariffs, as for example at good locations in Africa, America, China, India, Australia or MENA.

The DLR (German Aerospace Centre) has calculated that, if solar thermal power plants were to be constructed in large numbers in the coming decades, the estimated cost would come down to about 4-5 Eurocent/kWh. Because the costs for raw materials for solar thermal power stations are rising more slowly than the price of fossil fuels,

CSP may become competitive earlier than previously expected. At the moment, production bottlenecks and strong demand are keeping prices high. In order to establish, by 2050, a capacity of 100 GW of exportable solar power in MENA, over and above the domestic needs of sun-belt countries, state support will be required in the initial stages to make the building of power stations and transmission lines attractive to private investors. An approximate investment forecast for the TRANS-CSP scenario has been researched by the DLR.

 
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