With the Queen’s speech today outlining the coalition Government’s plans to revitalise the economy, those within renewable energy will be pondering the future of the UK low carbon economy.

Frost & Sullivan have conducted a study which indicates that the Clegg-Cameron alliance commitment to a low carbon economy could prove beneficial to other struggling industries and in particular, chemicals. The chemical industry plays an important part in the manufacture of new renewable technologies such as solar PV. Frost & Sullivan therefore predict that the growth of the UK solar industry, pushed by the feed-in tariff could help support the chemical industry.

Making comparisons to Germany who introduced their own feed-in tariff system in 2000 in order to incentivise solar investment, Frost & Sullivan believe that the UK feed-in tariff could prove to be a similarly successful catalyst for UK industry as a whole.

Frost & Sullivan Industry Analyst, Dr. Nicola Rudd stated that,

“Increased deployment of photovoltaics has a knock-on effect on the chemical industry as the raw materials, such as solar grade silicon and industrial gases, are supplied by chemical manufacturers. Several of these companies, such as PV Crystalox Solar and Linde, have facilities in the UK and could benefit from this increased local demand for photovoltaics.”

Rudd believes that other areas of UK manufacturing could also benefit from moves towards a low carbon economy. The manufacture of electric and hybrid vehicles in the UK is set to grow, creating jobs and supporting related industries. Rudd believes that,

“The UK is going to be a manufacturing hub for electric vehicles, as demonstrated by Nissan’s announcement that they are going to be manufacturing electric vehicles in Sunderland from 2013.”

The 25^th EU PVSEC and 5^th World Conference on Solar Photovoltaic Energy will take place between the 6-10 September 2010 at the Feria Valencia, Spain. Considered to be one of the leading annual conferences in the field of solar PV energy generation, the 25^th EU PVSEC conference will be held in conjunction with the 5^th World conference on Photovoltaic energy conversion.

The ground-breaking Valencia conference will also bring together the 36^th US IEEE PV specialists conference and the 20^th Asia/Pacific PV science & engineering conference in what is expected to be a massive and unique internationally focused forum for solar energy specialists.

Attendees of the Valencia conference will have the opportunity to meet experts fro around the world and discuss potential developments in the field of solar photovoltaic generation. New trends will be discussed with a keen focus on recent innovations in the science of solar PV. The opportunity for networking, exchanging ideas and perspectives and keeping abreast of international PV developments will provide an exciting prospect for anybody involved in this industry.

With subjects of discussion covering Industry, R&D, Policy, Utilities, Architecture and of course, end users, those involved will get a truly global perspective on all the key issues facing the solar PV market now and in to the future. With side events such as Fora, workshops and technical tours, the 5 day event will be sure to provide a wide array activities.

Programme:

• Plenary lectures focusing on the state-of-the-art and targets of PV
• Oral and poster presentations of specific research, development and demonstration projects, PV applications, 
  PV markets
• Exhibition of PV products and services (6-9 Sept.)
• Fora and workshops on present-day PV issues
• Scientific tours and a social programme

For more information on the 25^th EU PVSEC and 5^th World Conference on Solar Photovoltaic Energy please visit: http://www.photovoltaic-conference.com/

The Chinese National Energy Administration has announced via the state run newspaper China Daily that they will be seeking to produce around 15 per cent of all the country’s energy by renewable means within the next 10 years.

China, despite being criticised for its heavily industrialised, polluting economy and images of Beijing obscured by dense smog during the 2008 Olympic Games, the government is taking proactive steps towards reducing carbon emissions with measures that would shame certain other attendees of the Copenhagen climate summit.

With the growing realisation of the fallibility on basing the huge Chinese economy on fossil fuel imports which could become untenable within the next 25 years, the Beijing government is planning to spend billions of dollars in investing in solar and wind farm sites in addition to research projects which could keep China at the cutting edge of green energy generation.

Renewable energy generation grew by 1 per cent in China in the last 12 months with the government hopeful that figures will grow from the present 9.9 per cent to 15 per cent by 2020. The Chinese government is keen to diversify its economy as well as its means of energy generation with the dual purpose of slowing the effects of climate change and making the economy more robust in the face of any potential fuel crises which could arise in the near future.

In spite of passing legislation designed to have an immediate impact on renewable energy uptake such as the feed-in tariff, a mechanism to incentivise investment in green technologies, government spokesman Zhang Guobao is realistic about the timescales involved in such projects. Speaking to China Daily, Zhang commented that,

“Power projects take a long time to be up and running, and we are basically allowing five years to complete them although it is a 10-year program, otherwise, the facilities cannot be put into use by 2020.”

Zhang added, “It appears that some local governments approved energy-guzzling projects during economic crisis so only by fully implementing our energy saving regulations can we realize economic growth with less energy consumption.”

The winter months have brought lots of snowfalls, or as they are known in the world of solar energy, ‘shading events.’ You might be forgiven for wondering what exactly happens to the performance of solar panels when they are covered in snow, or anything else for that matter.

Shading is a big issue for solar arrays. A small amount of shading on one solar panel can result in a big power loss for the entire system. This is because of how they are connected together; a solar panel is made of a number of solar cells connected in series. Each solar cell has a current of around 8 Amps and a small voltage of 0.6V or so when under full sunlight. For those who remember their physics classes from school, this means that when they are connected in series the voltages add up but the current stays equal. Solar panels are then connected together in series to make a string, so the current still stays the same (on large arrays multiple strings are connected in parallel).

What this means is that if one solar panel, or even one cell of one solar panel is affected, it will affect all the others. When a cell is shaded its output current decreases, which means the current for all the other cells and modules is also limited. So one small patch of shade can disproportionately reduce the power output of the whole system.
This effect can be limited by a number of means.

The best way is to make sure your solar panels are not going to be shaded in the first place. This should be checked as part of the site survey, conducted by your MCS accredited installer. You should ensure that nothing will shade the modules during the middle of the day, when your system should be producing the most energy. Shading can be checked using a special design tools that show the path of the sun behind various shading objects. This can be either a lens that shows the horizon and path of the sun in front of you, or a full design software package that uses photographs of the surroundings.

With snow it does help to clear it off. But there isn’t usually much sun when its snowing, and if the sun does come out, the snow melts pretty quickly.

If you cannot eliminate shading as is often the case in built up areas, there are several technologies that can limit the effect of it. Many solar panels now include bypass diodes that disconnect groups of solar cells if they are shaded. It is fairly crude but often works well. When you buy solar panels make sure to ask about bypass diodes.

A second technology that is not available yet in Europe but soon will be is distributed conversion. Here, rather than have power electronics (like the inverter) positioned all in one place, you have some electronics placed on each module. This allows each module to operate independently. One company in the US called Enphase claims this technology increases power output by upto 25 percent.

These are all things to bear in mind when buying a photovoltaic system.