Frequently Asked Questions

What's the difference between PV & other solar energy technologies?

There are four main types of solar energy technologies:

1. Photovoltaic (PV) systems, which convert sunlight directly to electricity by means of PV cells made of semiconductor materials.

2. Concentrating solar power (CSP) systems, which concentrate the sun's energy using reflective devices such as troughs or mirror panels to produce heat that is then used to generate electricity.

3. Solar water heating systems, which contain a solar collector that faces the sun and either heats water directly or heats a working fluid that, in turn, is used to heat water.

4. Transpired solar collectors, or solar walls, which use solar energy to preheat ventilation air for a building.

How much energy does an average house use?

An average 3 bed roomed house uses approx 5,480kWh per year - Family with 2 children. (Parents working, children at school).

Do I need a 3 phase electricity supply?

Systems up to about 10kw peak power can often be accommodated on single phase electricity supply, however we do need to seek permission from your Distribution Network Operator (DNO).

Are the photovoltaic panels subject to VAT?

The standard rate of VAT applies to businesses. To encourage domestic uptake of renewable energy, a VAT rate of 5% is applied.

Do the photovoltaic systems qualify for capital allowances?

For business clients, capital costs will qualify for capital allowances, so the cost of the PV system is deducted for tax purposes against the income stream. You can also either own the land and/or the PV System in a pension fund. However, we recommend that you take specific independent professional advice if considering these options.

Will PV systems be dropping in price dramatically over the next few years?

Many developments are taking place in the PV industry and popularity is increasing. However, we would expect prices and performance to change gradually rather than a dramatic change. The government is interested in maintaining a consistent return on investment systems installed now and over coming years. On this basis we would expect government incentives to reduce as the cost/performance ratio improves.

What is the proposed design for the system, in particular roof fixing, layout etc?

We have a range of standard designs and will pick the most appropriate layout for your roof. The fixings will not affect the structural integrity of your roof.

Can you choose the colour?

No, but you can choose the colour of the panel frame, either black or white.

What happens if there is a power cut?

Solar electric systems for homes are entirely grid connected. If there is a power cut your system is automatically switched off. This is a safety measure designed to stop electricity leaking on to the national grid and to protect people who may be working to restore the power supply.

What happens if the solar installation is struck by lightning?

Since a photovoltaic installation does not increase the probability of lightning strikes, the solar modules themselves are no more at risk than the inverter or other loads connected to the grid. However, in the rare event of the solar generator being hit by a direct lightning strike, the modules are likely to suffer considerable damage. The only thing that will help in this scenario is the integration of an external lightning protection system.

Much more frequent, by contrast, are indirect or close strikes, where a branch current of the lightning flows over the electrical installation, inducing a surge. In this case, tiered surge protection at the utility grid feed-in point or at the PV array can significantly reduce the risk of damage. In addition, modern inverters are protected against atmospheric disturbances via thermally monitored varistors. Good grounding is essential for the proper operation and safety of your solar system.

Are you a member of REAL (Renewable Energy Assurance Limited) & what is it?

We are members of REAL, which was set up by the Renewable Energy Association to guarantee a high quality experience for consumers. REAL membership is a sign that the supplier has agreed to abide by the high standards as set out by the customer code. The REAL logo is a symbol of professional excellence.

How much will I get paid under the FITs scheme?

FITs consists of 2 tariffs: a Generation Tariff and an Export Tariff:

Generation Tariff – a fixed rate that a FIT generator will receive for every kWh of renewable energy generated regardless of where the energy is used. To measure the electricity generated there must be an Ofgem approved total generation meter connected to the installation.

Export Tariff – a fixed 3p/kWh rate for any surplus amount of energy which is sent back to the electricity grid. Generators will receive the export tariff in addition to the generation tariff.

Both tariffs will be linked to inflation and will be paid to the FITs generator on a quarterly basis.

Can my FITs payments be made to someone else?

Under the FITs scheme you can nominate a third party to receive your FITs payments.

How long will I be able to receive FITs payments?

The tariffs are available for 20 years (25 years for PV and 10 years for micro CHP) from the date you joined the scheme or until you installation ceases to operate. Different rules apply for generators migrating from the RO.

When do I have to submit meter readings?

Meter readings need to be taken from your total generation meter 4 times a year. You will be provided with 4 meter reading months within your FITs Statements of Terms. You can take and submit your meter reading any time within your meter reading month. We recommend that the read is submitted as soon as possible. If your meter reading is not received then your FIT payment will be delayed until the next quarter.

If your installation is above 30kW, you have opted into FITs export tariff and you have an export meter there is no need to provide export meter readings. This is because a half an hourly meter is fitted into your installation, allowing a remote communications line to read the meter.