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Posts tagged with: renewable energy

Greece has recently gone through the greatest financial crisis to affect a member of the Eurozone since the introduction of the single currency ten years ago. With raging unemployment exacerbated by huge cut-backs in public sector spending, the Athens government spent the first quarter of 2010 faced by riots in the streets, a result of the financial crisis which is hitting the Greeks harder than anybody.

However, plans are afoot to revitalise the stricken Greek economy with the announcement yesterday that 12 billion euros will be invested in green projects in an attempt to create jobs in new renewable industries. In a press release issued by the Greek government, Tina Birbili the Environment Minister said,

“The ministry hopes the programme will decisively contribute to face recession and lead to dynamic economic growth”

Birbili believes that renewable projects could attract around 32 billion euros of investment from around the world creating up to 192,000 jobs. This will at least come as a glimpse of light in a country where unemployment is steadily on the rise and national debt is at an all time high. The EU bailout, funded largely by Germany expires in 2 years, by which point Greece will be hoping that the economy is back on track.

Both Gordon Brown and Barack Obama have been keen exponents of renewable energy as a means of kick-starting the struggling economies of the UK and US respectively. Sound bites such as ‘Green New Deal’ have regularly appeared in the press both sides of the Atlantic in a reference to the government projects of the 1930’s designed to boost recovery after the Great depression. It seems that Greece is going to follow this lead with a number of projects now in the pipeline.

Certainly, with Greece already falling behind other southern European countries with regards to its renewable energy uptake, the investment could provide the vital impetus needed to get the renewable energy industry in Greece on its feet. With targets of generating 40 per cent of its energy from renewable sources by 2020, they have their work cut out.


Seemingly slow to catch on to the potential of renewable energy, it seemed that the UK had finally cottoned on to the advantages of green investments with the passing of the Energy Act, the creation of the Department of Clean Energy and Climate Change and the recent introduction of feed-in tariffs.

However, the Committee on Climate Change (CCC) has delivered a warning suggesting that cut-backs in government spending on low carbon initiatives could see the UK fall behind competitors in the green energy industry.

The CCC, which advises the government on meeting carbon emission reduction targets both in the short and long term has stated that the government should re-think cutting £34 million from renewable energy projects including wind, biofuel and geothermal energy. Indeed the CCC believes strongly that more investment should be made in green projects to ensure the long term viability of the British renewable industry.

With Department of Energy and Climate Change (DECC) announcements confirming that certain grants for green projects will be cut, it certainly gives a slightly worrying indication that more cloth cutting could be taking place over the next 12 months. With this in mind, the CCC has highlighted the keys areas in critical need of continued government support:

·          Offshore wind

·          Tidal & wave power

·          Carbon dioxide capture and storage

·          Cleaner aviation

·          Electric vehicles

·          Smart power grids

Estate agency firm Knight Frank claims that rural estates and farms in the UK could bring in extra income in the tens of thousands if they take advantage of the renewable energy feed-in tariff. In its latest publication, Rural Report Knight Frank created a hypothetical renewable energy farm utilizing all forms of renewable energy as a means of generating revenue through the feed-in tariff calculating the cash that could be generated from wind, solar, hydro and anaerobic digestion.

The report found that if complete grid-connectivity were achieved, the following incomes could be generated:

  • 2 wind turbines: £300,000
  • Anaerobic digester: £460,000
  • Hydroelectric Installation: £190,000
  • Solar Panels: £26,300

The total income for these renewable projects would be an impressive £916,000 with a potential of £18.5m to be made over the project’s lifetime.

The potential for landowners to benefit from feed-in tariff legislation in the UK is enormous with the potential not only to receive tariff payments but also to significantly reduce overheads by using the energy produced on the land.

The Knight Frank report explains the mechanism stating,

“Feed-in tariffs were introduced in the dying days of the Labour government and were designed to encourage people to create their own renewable electricity.

An index-linked payment guaranteed for up to 25 years is made for each unit of electricity produced even if it used by the generator for their own consumption. The tariff varies depending on how the energy is being generated and the scale of the scheme”.

Although the hypothetical estate set out in the Rural Report gives the absolute optimal conditions for generating revenue from renewable energy, it nevertheless highlights the potential to make money though renewable energy. With project lifetimes of 25 years and revenues protected by government legislation, landowners are catching on to the fact that there is real money to be made from investing in renewable installations.

In the UK’s fledgling PV industry there are some unexpected issues emerging.
One of those is related to the grid or ‘mains’ voltage. This should be, as
in the rest of Europe, fixed at 230V. However it can vary, and in reality
the legal limit is 230V plus or minus 10 percent, generally being higher
voltage close to the nearest transformer, and getting lower voltage as you
move away.

This is important for PV systems because the inverter must convert direct
current into mains compatible AC with an acceptable voltage level. Inverters
are also designed to shut down if there is a problem with the grid for
safety reasons.

In Germany, the voltage level is very precise (perhaps as you might expect)
and since Germany is the world’s largest solar market by far, most inverters
in Europe have their settings with Germany in mind. This means that when the
grid strays slightly away from 230V, the inverter temporarily shuts down. In
the UK, the grid is much more likely to deviate from 230V, meaning that with
German settings, an inverter could well spend more time off than on.

Luckily the problem is generally easily fixed by changing the inverter to
new settings which make it tolerant to a wider voltage range. The key point
to remember is that with the inverter shortage, products are being sold
which are completely unchanged from their German settings. This means you
need to be extra vigilent when buying an inverter to ensure compatibility.

A related topic, that I will soon cover, is to do with how lots of solar
energy connected to the grid can actually affect the grid voltage and
frequency – but that’s another issue.

If an inverter is used in the UK without any change in settings then chances
are, with our fluctuating grid, you will have peaks or dips in the voltage
that shut off the inverter from time to time. The solution is simply to
change the settings via the firmware to allow the inverter to carry on
working in a wider range of voltages.