The offer will include both a technical survey to ensure that the property is suitable for solar panel installation and of course the actual installation, taking away the initial start up costs which often act as a deterrent to potential renewable installers.

100,000 systems will be given away to homeowners with south-facing roofs meeting the requirements of the survey, allowing them to enjoy all of the benefits of a solar panel system without having to outlay all of the initial costs associated with solar technology.

Solar panels could save homeowners up to 40 per cent on their electricity bills with estimates that a typical 3 bedroom semi could save up to £250 a year, with the added benefit that homes with solar panels installed fetch a higher price on the market than comparative properties without. A spokeswoman for Homesun commented,

“There’s real excitement about what we are doing. This just goes to show the latent demand for solar amongst the British public, they just needed to find a way to access it. Solar now makes perfect sense. I am proud HomeSun is leading the charge to take solar mainstream.”

Homesun have already announced that since the release of their offer, they have received 7,000 calls and have had 10,000 people log onto the Homesun website. Talking about the unprecedented level of interest, Chief Executive of Homesun David Green said,

“The phones have been absolutely mental and it’s put huge pressure on our website. We were not anticipating such enormous demand. It’s clear that for the first time, we have allowed renewable energy for residents to break through.”

Homesun’s offer has been made possible by the introduction of feed-in tariffs, government legislation introduced in April 2010 devised to increase the take up of renewable energy generation. The tariff works by offering premium, guaranteed rates for both the energy used and the units of energy fed-into the national grid from the renewable systems.

Homesun will therefore be able to recoup their initial investment and subsequently make a healthy profit on each installation. Homeowners will be given the opportunity to buy the tariff contracts from Homesun in the future but it is more likely that most will simply opt to make savings on their bills.

With offers such as Homesun’s making an impact in the media and the building of consciousness about the feed-in tariff, it is very likely that before long the market will be jam packed by suppliers offering very similar solutions

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.

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

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.

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.

Solar panels produce direct current (DC). This means you need an inverter to turn that electricity into mains frequency alternating current (AC).  Inverters come in a range of power ratings. The more solar panels you have, the more power the inverter has to deal with, so the size and cost increases. It’s very important to match the size of the inverter to the number of solar panels.

If the inverter is too small, you will lose out on some of the energy that your system produces. If it is too large, the inverter may not perform at its optimum efficiency, and you will have paid for more than is necessary. In the UK, the optimum situation is to have an inverter that is rated at 80% of the power rating of your PV system, since it is rare you will be producing at 100% power.

More critically than getting the power right, you need to ensure the voltage and current of your solar panel system remains within the input range of the chosen inverter. To re-cap, solar panels on your roof are generally connected together in series, in a ‘string’. This increases the system voltage, but does not increase the current. Once a certain number of solar panels have been connected in series, the voltage will become too high and the system needs to be arranged in two strings, each of the same number of panels, connected in parallel. This generally occurs after a string exceeds 8 – 11 solar panels. When strings are connected in parallel, the currents add-up, but the voltage remains constant.

By adding more and more strings in parallel, the current and voltage can be controlled to remain in the inverter limits. For large solar installations, inverters can used that that have a very high power capacity, or alternatively it is possible to use many small inverters connected in parallel.

It is important to remember certain constraints. Inverters come in several sizes, but there may be some numbers of solar panels for which no inverter is ideal. For instance, because it is necessary for all stings to be equal in size, you can only use an even number of solar panels when using multiple strings. In addition, all solar panels must receive the same amount of sunlight when connected to the same inverter. It is no good to have some solar panels facing different directions on different parts of the roof. New technologies, soon to become widely avaialable that will make this process much easier. Namely micro-inverters, which convert DC to AC at every solar panel, will mean that solar panels can face different directions, however these are not yet widely available.

If you have a sales visit from a solar company, make sure the salesman understands these points as he’s designing your system.

According to many within the industry, the UK now has everything in place to become a player in the global solar market.

“The UK market for solar PV is growing explosively. This is because the FITs [feed-in tariffs] bring a huge new raft of players – the energy users – into the market; broadening it way beyond the traditional energy industry. All renewable power sources are benefitting, but solar is doing best because it is so easy to apply,”

Commented Philip Wolfe, Director of Ownenergy and leading exponent of feed-in tariffs.

With the tariffs working as a means of incentivisation for investors who were once reluctant to invest in what was once an extremely expensive field, the tariffs offset costs and greatly improve the attractiveness of green energy investments. In all countries where tariffs have been introduced there has been a massive uptake in investment with individuals keen to take advantage of legislation-protected investments with healthy ROIs.

With regards to potential for the solar PV industry, Edwin Koot CEO of Solarplaza stated that,

“Having experienced the benefits that FITs have to offer, European countries are now looking to capitalise on the emerging UK market. We can already see signs of this happening for our upcoming UK PV Conference: where 67% of delegate registrations are from international companies, compared to just 33% from the UK.”

However, warning that in the current climate the UK solar PV industry is unlikely to achieve overnight success, Clive Collison of South Facing said,

“It will take time to develop the UK market. Currently there is a lack of knowledge so education of potential customers and businesses is needed. Right now, very few people understand the feed-in tariff system and the opportunities to their full extent.

It took Germany, Spain and Italy three years after the start of their feed-in tariff to reach a substantial market scale. No doubt a similar market development will occur in the UK. That is why conferences like the UK PV Conference are important, to educate the business community and customers and build the business infrastructure. There will be plenty of business for everybody.”