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Generator's Factfile

In the Generator's Factfile you will find detailed information on each of Good Energy Generation's schemes. To find information on the scheme you are looking for, click on the links below.

HotROCs
HomeGen
HomeGen: Offgrid
SmartGen
SmartGen Useful Definitions
ProGen
ProGen Useful Definitions

HotROCs Factfile

How are generators paid?

The Good Energy HotROCs scheme pays 4.5p/kWh for the ‘deemed’ output of a renewable heat generator. We’ve put a considerable amount of research into how to calculate, or ‘deem’ the expected generation of a solar hot water generator. We won’t be directly measuring individual levels of generation, but will be offering a financial incentive to generators based on our own assumptions.

HotROCs credits are paid on a biannual basis. These will appear on your Good Energy Electricity supply statement as a credit to you, thus reducing the cost of your bills.

Why are you paying customers for their Heat?

There are financial support mechanisms in-place for generators of renewable electricity but nothing to support renewable heat generators.

The government intends to introduce a support mechanism for renewable heat generation in the future but difficulties in measuring heat on a small scale is seen as a barrier by the government and is delaying the creation of a national support scheme. This lack of financial support is preventing the wider uptake of renewable heat systems.

Good Energy aims to show both government and industry how a support mechanism can work. Currently, no other company or organisation is exploring this area, and we believe any government backed scheme will not delivered before 2010. We hope HotROCs will inform other renewable heat incentive developments and catalyse change in the industry.

Why can’t you meter heat generation?

Heat can be metered, however the costs of metering will overshadow the financial benefits that a small generator might earn. For example, ‘heat’ meters cost about 10-times more than those for electricity. We believe metering heat will become more feasible as the incentives and the market develops.

What types of renewable generators qualify for the HotROCs scheme?

At present the HotROCs scheme is only available to solar hot water generators. Whilst there are many different types of renewable heat generator that will benefit from financial support, solar thermal systems are the most plentiful and applicable. Additionally, calculating the generation of other renewable heat systems will require a more complex method and is still to be developed. However, we are working on it and we plan to extend the scheme to other technologies in the future.

How do you ‘deem’ my generation?

There is no one, proven, way to calculate the output of a small heat generator. After much research Good Energy has opted to include the most influential factors the productivity of solar hot water generators – these include:
• Solar ‘irradiation’ (the amount of solar energy delivered to a location over a year)
• Angle and orientation of the generator (how directly the generator is ‘facing’ the sun)
• Shading of the generator (shading of the generator by trees or adjacent buildings can have a small impact on the system efficiency)
• Size of the generator ‘collector’ area (the bigger the generator, the bigger the potential output).

Our calculation is designed to give an approximation of your generation – this acts as a springboard for our on-going research and development in the renewable heat sector.

Why install a solar hot water system?

A properly installed system delivers environmental benefits by avoiding the use of fossil fuels to heat your water and some financial savings. Good Energy HotROCs aims to help you make a decision that is economically as well as environmentally viable. The end result of our HotROCs project and surrounding research is to make investment into renewable heat generation more economically attractive than putting your money in the bank.

Will I need planning permission to install a solar generator?

Recent changes to ‘permitted developments’ mean that, in most cases, no planning is needed. If you live in a listed building, or a conservation area, you’ll need to contact your local planning office. For more information see our information on planning.

Is solar thermal suitable for my home?

Solar hot water generators can be used for both domestic and commercial scale applications – such as businesses or even heating swimming pools. For a domestic system, individuals will need between 3-4m2 of roof-space, and ideally a South-East to South-West facing roof. In many cases, additional space will be required to situate an additional hot-water cylinder. Competent, accredited installers will be able to assess the situation of an individual and optimize the installation to suit your needs.

Can you offer any installation advice?

Yes, through the Good Energy Shop we can evaluate if your home is suitable for a solar thermal installation and with our installer partners, we can provide you with a fully installed system. For more information on the microgeneration technologies we provide, go to the Good Energy Shop.

Can I get a grant for my installation?

You may be eligible for a grant towards to the cost of your renewable generator. The Low Carbon Buildings Programme is the government grant scheme and is administered by the Energy Savings Trust. The programme is UK wide (apart from the Channel Islands and the Isle of Man) and will provide grants for renewable technologies. See our grants and funding section for more information. In Scotland you may also be eligible for help under The Scottish Community and Householder Renewables Initiative (SCHRI) www.energysavingtrust.org.uk/schri/

How productive is solar hot water?

The UK receives about 60% of the solar energy that is received at the equator – this is more than enough energy to generate a suitable amount of hot water. For every square meter, we receive approximately 900 – 1300 kWh of solar radiation over an average year – with the South of the UK receiving the most, and the North receiving the least. The efficiency of the particular panels and how ‘suitable’ the conditions for the installation are will dictate how much of this power can be converted to usable energy.

What happens to the heat that I generate?

Here is a diagram that illustrates how a typical solar hot water generator creates and uses power. Of course, some system set-ups will vary.

HomeGen Factfile

How are generators paid?

HomeGen offers a payment of 15p/kilowatt hour (kWh) for the total generation from domestic renewable generators. HomeGen customers are paid for every unit they generate, including the units they use on site. This avoids the need for export metering which can be financially unviable for small generators. HomeGen credits are issued twice a year. We will request your total generation meter readings on 1st April and 1st October. Once we havereceived your readings your HomeGen credits will appear on your Good Energy supply statement, reducing your bills.

What are Renewable Obligation Certificates (ROCs)?

ROCs are a financial incentive to encourage the growth of renewables. ROCs are awarded by Ofgem, the electricity regulator, for power generated from a renewable source.

Who claims my ROCs?

As part of the Home Gen contract, Good Energy will act as an agent and claim the ROCs on behalf of each generator. Generators will not need to make the claims themselves. The value of the ROCs is included in the HomeGen offer. We ask that all HomeGens are ROC & REGO (Renewable Energy Guarantee of Origin) accredited by Ofgem or agree to go through the accreditation process. We will help you with this process as much as we can and will act as an "agent" in order to claim ROCs on your behalf. This allows us to claim for all our smaller generators together which maximise the value of the certificates for us and reduces the work for you! We make an annual claim for the certificates that our generators have produced.

To support our claim, we require all HomeGen customers to provide us with two meter readings annually: one on 1st April each one on 1st October. If you decide you no longer want Good Energy to act as your ROC agent, you must inform both Good Energy and Ofgem. In most cases Ofgem and Good Energy would expect at least a month's notice and for the date of the change to be on the 1st April. Once we stop being your agent you will no longer be eligible for the HomeGen scheme.

What types of renewable generators qualify for the scheme?

Our HomeGen scheme is designed for solar PV technology and small-scale wind turbines less than 6kW in size and generating less than 8MegaWatt hours (MWh) per annum. We may allow other technologies on the scheme, such as hydro generators. We reserve the right to decline certain generators entry to the scheme or to recommend a transfer to other Good Energy generation schemes if we choose. For more information on our generation schemes visit, click here.

How do you record my generation?

All generators must have a meter that measures the renewable generator's total generation. This "total generation meter" must be Ofgem approved so that we can claim ROCs and REGOs. Please see the Ofgem PDF file on our website for a list of approved total generation meters. Your installer should be aware of this and you will need to speak to him/her to ensure that the meter they fit is approved. If your meter is not approved then the generator is not eligible to be part of the HomeGen scheme.

What about generators that may be too big for HomeGen?

For generators greater than 6kW in size or generating more than 8MWh per annum, we request you fill out Your Generator Details so that we can assess which of our schemes is right for your generator. Please view our scheme for small commercial generators – SmartGen, or if you have a large commercial generator visit our ProGen section of our website.

Can you offer any installation advice?

Yes we can. The Good Energy Shop offers a range of microgeneration products to provide heat and power for your home. We also provide information about each technology, grants and planning permission. The Good Energy Shop can also assess your property and recommend which technologies are suitable. View all our microgeneration products and information at http://www.goodenergyshop.co.uk/

Can I get a grant for my installation?

Do I need permission to connect to the grid?

Before connecting your renewable generator to the grid, you will need to comply with the regulations of your Distribution Network Operator (DNO). How this is done depends on the size of your installation. If your generator is less than 16A per phase in size (either 3.6kW single phase supply or 11.2kW three phase supply) you will need to fill in a G83 form for compliance. This is available from your installer or DNO. You will then have an automatic connection to the distribution network as long as you can comply with the terms set in G83. If your generator is larger than this, you will need to contact your DNO and negotiate directly for a connection.

Your installer should be able to provide you with guidelines. If the installation has already taken place your installer will still be able to advise if the agreement had been made.

Do I need an export meter?

HomeGen customers do not need to have an export meter fitted as we are paying you for your total generation and not what you feed into the grid. Having an export meter installed may not be cost effective for small renewable generators due to the charges that need to be met to maintain the metering. If you already have an export meter installed please contact us on 0845 456 1640.

Can you estimate how many units I will generate?

We can estimate how many units may be produced from a certain installation based on the size and type of generation and the energy source (wind, solar etc). Your installer should also be able to give you a figure for the average annual output.

What happens to the electricity I generate?

We hope you find this diagram helpful in illustrating how a typical HomeGen customer generates and uses the power, and also imports electricity from the local distribution network when they are not generating enough electricity to meet their needs.

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HomeGen: Offgrid Factfile

How are generators paid?

HomeGen: Offgrid offers a payment of 4.5p/kWh for every unit of electricity that is generated. To administer the scheme, There is a charge of approximately £20 which we will deduct from your credit.

Offgrid payments are made on an annual basis and all generators will receive a yearly statement along with a payment by cheque in April or May each year. In return for your payment Good Energy will claim and receive your Renewable Obligation Certificates (ROCs) from Ofgem.

What are Renewable Obligation Certificates (ROCs)?

ROCs are a financial incentive to encourage the growth of renewables. ROCs are awarded by Ofgem, the electricity regulator, for power generated from a renewable source.

Who claims my ROCs?

As part of the HomeGen: Offgrid contract, Good Energy will act as an agent and claim the ROCs on behalf of each generator. Generators will not need to make the claims themselves. The value of the ROCs is included in the HomeGen: Offgrid offer. We ask that all HomeGen: Offgrid generators are ROC & REGO (Renewable Energy Guarantee of Origin) accredited by Ofgem or agree to go through the accreditation process. We will help you with this process as much as we can and will act as an "agent" in order to claim ROCs on your behalf. This allows us to claim for all our smaller generators together which maximise the value of the certificates for us and reduces the work for you! We make an annual claim for the certificates that our generators have produced.

If you decide you no longer want Good Energy to act as your ROC agent, you must inform both Good Energy and Ofgem. In most cases Ofgem and Good Energy would expect at least a month's notice and for the date of the change to be on the 1st April. Once we stop being your agent you will no longer be eligible for the HomeGen: Offgrid scheme.

What types of renewable generators qualify for the scheme?

Our HomeGen: Offgrid scheme is designed for solar PV technology and small-scale wind turbines less than 10kW in size and generating less than 20MegaWatt hours (MWh) per annum. We may allow other technologies on the scheme, such as hydro generators. We reserve the right to decline certain generators entry to the scheme.

How do you record my generation?

All generators must have a meter that measures the renewable generator’s total generation. This “total generation meter” must be Ofgem approved so that we can claim ROCs and REGOs. Please see our list of Ofgem approved total generation meters. Your installer should be aware of this and you will need to speak to them to ensure that the meter they fit is approved. If these meters are not approved then the generator is not eligible to be part of the scheme.

What about generators that may be too big for Offgrid?

We ask that generators greater than 10kW in size send us Your Generator Details. With this information we can assess if we have a generation scheme that is right for you.

Can you offer any installation advice?

Can I get a grant for my installation?

Can Good Energy estimate how many units you will generate?

What happens to the electricity I generate?

We hope you find this diagram helpful in illustrating how a typical Offgrid Generator generates and uses the power on site, and may store some of the electricity generated.

SmartGen Factfile

What types of renewable generators qualify for the SmartGen scheme?

Our SmartGen scheme includes solar photovoltaic, small-scale wind, small-scale hydro electric and sustainable biomass generators. SmartGen is for installations less than 75kW installed capacity that are capable of exporting more than the minimum export threshold over the course of a year. If your generator is outside of the above boundaries look at Good Energy Generation Schemes to find which is right for you.

How do I get permission from my local distribution company to connect to their electricity network?

Before connecting your renewable generator to the local electricity distribution network, you will need to comply with the regulations of your local distribution company. This is a safety regulation that must be complied with and your installer will advise you on this process. To obtain further details on this you need to contact your Local Distribution Company.

Why do I need an Ofgem accredited total generation meter?

In order to qualify for the Smart Generation scheme your renewable generator must be accredited for ROCs, LECs, and REGOs. All renewable generators are now entitled to receive ROCs, but they must have an Ofgem approved total generation meter installed at the inverter and must go through the accreditation process in order to be issued ROCs by Ofgem.

How can I check which Total Generation Meters are Ofgem approved?

See our list of Ofgem approved total generation meters.

What happens if I already have an export meter installed?

If your export meter is fully compliant with the electricity network then all we need to do is register your export meter on the electricity network. This may be as simple as us taking over the meter from your previous supplier, or it may require you to obtain a supply number (MPAN) before we can register your meter.

If your meter is not compliant then we will have to install a new meter for you. There is a cost associated with this meter (approximately £60 - £90) and we will pass this cost onto you. Please note that we will only install Non Half Hourly (NHH) Export Metering.

What happens to the electricity that I generate?

The electricity that you generate is either used on site by you or physically added to the local electricity distribution network. We hope you find this diagram helpful in illustrating how a typical Smart Generator generates and uses the power, exports an amount of power back to the local distribution network and also imports electricity from the local distribution network when they are not generating enough electricity to meet their needs.

How much electricity can I expect to Generate and approximately how much will I get paid?

Good Energy pays SmartGen Generators an amount for every unit of renewable electricity generated (the Renewable Benefit) and a payment for all export units (Export Benefit).

Your installer should be able to estimate the average annual generation, and how much electricity you will use annually. From there you can estimate how much you will be paid through Good Energy’s SmartGen scheme.

What does the Good Energy SmartGen payment consist of?

Payments received on the SmartGen scheme are made up of two parts:
1. Payment for the Renewable Benefit attached to the renewable electricity generated by your generator. These renewable benefits are known as ROCs and REGOs, and are not a payment for the renewable electricity itself.
2. Payment for the exported units of electricity from your generator to the local electricity grid, less an annual charge for metering the export over the course of a year.

Once I have signed up, how will I be paid?

SmartGen Generators are paid separately for exported units and renewable benefit:
• Export Benefit is paid for on a quarterly basis in arrears as long as the generator has provided monthly export meter readings. The charge for metering the export is deducted from the export benefit income.

• Renewable Benefit is paid for in arrears on transfer of ROCs to the Good Energy account as long as the number of ROCs to be transferred is more than the minimum ROC transfer threshold or the date is near the long stop date.

What is the minimum ROC transfer?

The minimum number of ROCs that can be transferred to Good Energy in order for Good Energy to pay for the transferred ROCs, will be specified in our pricing offer to you. Good Energy imposes a minimum ROC transfer threshold in order to keep our administration costs to a minimum and so that we can pass on the maximum benefit to you.

SmartGen Useful Definitions

Connection agreement:

The owner of your local electricity distribution network, including the wires and the meters that connect your property to the national grid.

Permission from the Local Distribution Company to connect your generator to the local electricity distribution network. There are different connection agreements depending on the installed capacity of your renewable generator; G83 Compliance is for generators less that 16A per phase and G59 is for all other generators.

Export:

Refers to any electrical power that is generated by a renewable generator, which is not used on site at the property, but passes onto the local electricity distribution network through a settlement export meter.

Please note: The ‘Export Generation’ figure may be less than the ‘Total Generation’ figure due to any on site demand at a site which decreases the amount of electricity available for export as the generated electricity is preferentially used at the site before it will pass through an export meter.

Export Metering Charge:

In order for generators to be paid for their export an official settlement export meter must be maintained at the site of the generator. The cost of administering this export metering is passed on to the generator as an annual export metering charge spread over the course of the year.

Electrical schematic diagram:

A simple diagram of the electrical connections for your renewable generator, such as the one below. It should include the generator, import meter, any export meter, and the inverter and associated wiring.

Good Energy’s 100% renewable supply:

Good Energy supplies 100% renewable electricity to homes and businesses in the UK. This means for every unit of electricity you import into your property, we buy one from renewable generators and supply this to the national grid.

Half Hourly (HH) Export Meter:

An export meter that records the exported units of electricity produced by a generator during every half hour of the day in kWh. HH export meters are required for all generators over 30kW installed capacity, and in some circumstances below 30kW installed capacity.

Import:

This relates to the electricity drawn from the national grid (via your local electricity distribution network) which is used at your property. It is; and measured through an import meter.

Installed capacity:

this is the maximum power that can be generated if the generator is working at its full potential, also known as its maximum power rating. It is normally measured in kW or MW. An average solar PV site is about 1 kW and Good Energy’s Delabole wind farm, which supplies 2,500 of our customers is 4 MW (4,000 kW).

Levy Exemption Certificate (LEC):

A LEC proves how the electricity was generated and who generated it, thus ensuring that the power comes from a renewable source. LECs are rewarded by Ofgem with every 1 MWh of power exported from a renewable source.

Local Distribution Company:

The owner of your local electricity distribution network, including the wires and the meters that connect your property to the national grid.

Long Stop Date:

Means the date before which ROCs, LECs and REGOs from the previous year of generation must be transferred to Good Energy in order for the generator to be paid for those ROCs, LECs and REGOs.

Minimum Export Threshold:

As SmartGen Generators must pay an annual export metering and administration charge, it is strongly recommended by Good Energy that potential generators will generate more than the minimum export threshold so that a profit will be made over the course of a tariff period.

For generators less than 30kW installed capacity this minimum is approximately 5MWh/yr, for generators above 30kW it is approximately 30MWh/yr. Please note that these minimums can change due to future market prices.

Minimum ROC Transfer:

Represents the minimum number of ROCs that can be transferred to Good Energy in order for Good Energy to pay for the transferred ROCs. This number will be specified in our pricing offer to you. Good Energy imposes a minimum ROC transfer threshold in order to keep our administration costs to a minimum and so that we can pass on the maximum benefit to you.

Non Half Hourly (NHH) Export Meter:

A Non Half Hourly (NHH) Export Meter records the cumulative export from a generator in kWh. NHH export meters are effectively the opposite of a normal household electricity meter.

Ofgem:

Office of Gas and Electricity Markets -, the industry regulator. http://www.ofgem.gov.uk/

Ofgem-accredited Total Generation Meter:

A Total Generation Meter that has been accredited by Ofgem to receive payment for all renewable benefits, including ROCs.

On site Demand:

On site demand is electricity used by any building, normally expressed in kWh or MWh. A normal domestic property would use circa 3.3MWh per year.

Renewable Accreditation:

Good Energy requires all its Smart Generators to be accredited with Ofgem for Renewable Obligation Certificates (ROCs), Levy Exemption Certificates (LECs) and Renewable Energy Guarantee of Origin’s (REGOs). Before you join the Smart Generation scheme you should have already started the accreditation process. Good Energy does not currently offer advice to customers looking to become accredited for ROCs, LECs and REGOs. Accreditation documents and further information can be downloaded from http://www.ofgem.gov.uk/ under the tabs “Sustainability”, “Environment” and then “Renewables Obligation”.

Renewable generator:

Electricity generation technologies that use renewable resources, such as wind, wave, solar, biomass and small-scale hydro power to generate electricity.

Renewable Energy Guarantees of Origin (REGOs):

Awarded by Ofgem with every 1 MWh of power generated from a renewable source. Good Energy uses REGOs to prove that the electricity we supply is 100% renewable. REGO’s currently have no market value.

Renewable Obligation Certificates (ROCs):

Awarded by Ofgem with every 1 MWh of power generated from a renewable source. This value varies each year with normal market forces, just like any other tradable commodity.

ROC & REGO register:

Ofgem issues ROCs and REGOs to internet-based registers. Each renewable generator can be issued with a ROC and REGO register unless they nominate a supply company, like Good Energy, to be issued the ROCs and REGOs on their behalf.

Supply number:

For each import and export meter registered in the settlement process a unique supply number is issued. Each registered supply number, or meter, incurs a maintenance and operational charge. The supply number is also known as a Meter Point Administration Number (MPAN).

Total Generation:

The total amount of renewable electricity generated by a renewable generator, normally expressed in kWh or MWh.

Total Generation Meter:

This meter is installed at the inverter (which converts the generators electrical output from DC to AC), to record the total electricity generated by your renewable generator. The meter make and model is normally found on the total generation meter, and the meter serial number is often represented as a barcode under the total generation meter,and is a unique number.

ProGen Factfile

What types of renewable generators are eligible for the ProGen?

Good Energy’s ProGen generators generally have over 75kW installed capacity and export a large amount of electricity which can supply hundreds to thousands of Good Energy customers. Current ProGen generators include solar photovoltaic, small-scale wind, small-scale hydro electric and sustainable biomass generators. If your generator is outside of the above boundaries look at Good Energy Generation Schemes to find which is right for you.

How do I get permission from my local distribution company to connect to their electricity network?

Before connecting your renewable generator to the local electricity distribution network, you will need to comply with the regulations of your local distribution company. This is a safety regulation that must be complied with and your installer will advise you on this process. Your local distribution company may also be able to advise you.

Do I need an Ofgem-accredited total generation meter?

You will need an Ofgem-accredited total generation meter if you use any of the electricity you generate on site. Otherwise your settlement export meter will act as an Ofgem-accredited total generation meter.

In order to sign up to Good Energy ProGen your renewable generator must be accredited for ROCs, LECs, and REGOs. All renewable generators are now entitled to receive ROCs, but they must have an Ofgem approved total generation meter installed at the inverter and must go through the accreditation process in order to be issued ROCs, LECs and REGOs by Ofgem.

Good Energy does not currently assist in the accreditation process. Accreditation and help documents can be downloaded from Ofgem.

How can I check which Total Generation Meters are Ofgem approved?

Please see our list of Ofgem approved total generation meters.

What happens to the electricity that I generate?

The electricity that you generate is physically added to the local electricity network. This power goes on to supply homes and businesses with renewable electricity.

How much electricity can I expect to Generate and approximately how much will I get paid?

Good Energy pays ProGen generators an amount for every unit of renewable electricity generated (the ROCs and the REGOs), a payment for all export units (including LECs and Embedded Benefits), and a payment for any Triad bonus generated.

Your installer should be able to estimate your generator’s average annual generation, and how much electricity you may use annually. Once you have a quote from us you can estimate how much you will be paid by Good Energy.

What does the price that Good Energy pays its ProGen Generators consist of?

Payments received on Good Energy’s ProGen scheme are made up of three parts:
1. A payment for the Renewable Benefits attached to the renewable electricity generated by your generator. These renewable benefits are known as ROCs and REGOs, and are not a payment for the renewable electricity itself.
2. A payment for the exported units of electricity from your generator along with LECs and Embedded Benefits.
3. A payment for any Triad generated over the course of a year. However if your generator is not generating during any of the Triad periods then your generator will not earn any triad bonuses.

Once I have signed up, how and when will I be paid?

Good Energy ProGen generators are paid separately for Exported units, Renewable Certificates, and any Triad bonus:
• Exported electricity is paid for on a monthly basis in arrears direct to the generators bank account as long as the generator has provided monthly export meter readings.
• Renewable Certificates are paid for in arrears direct to the generators bank account after transfer of certificates to Good Energy as long as the certificates are transferred before the relevant long stop date. Note that Ofgem currently issues renewable certificates between two to three months after the month of generation.
• Triad is paid for after announcement of the Triad periods which is around the end of the year of generation (March to April each year).

ProGen Useful Definitions

Connection agreement:

Embedded Benefits

Are paid to generators that are connected to the local electricity distribution network rather than the National Grid. These generators do not need to pay charges for using the National transmission network, and supply companies also benefit from avoiding the losses associated with transmitting electricity over long distances.

Export

Please note that your ‘Export Generation’ figure may be less than your ‘Total Generation’ figure due to any on site demand at your site which decreases the amount of electricity available for export as the generated electricity is preferentially used at your site before it will pass through an export meter.

Half Hourly (HH) Export Meter:

Import:

This relates to the electricity drawn from the national grid (via your local electricity distribution network) which is used at your property. It is measured through an import meter.

Installed capacity:

This is the maximum power that can be generated if the generator is working at its full potential, also known as its maximum power rating. It is normally measured in kW or MW. For example, an average solar PV site is about 1 kW and Good Energy’s Delabole wind farm, which supplies 2,500 of our customers is 4 MW (4,000 kW).

Levy Exemption Certificate (LEC):

Local Distribution Company:

The owner of your local electricity distribution network, including the wires and the meters that connect your property to the national grid.

Long Stop Date:

Means the date before which ROCs, LECs and REGOs from the previous year of generation must be transferred to Good Energy in order for the generator to be paid for those ROCs, LECs and REGOs.

Meter Operation and Provision (MOP) Contract:

All generators over 30kW installed capacity must arrange for their own MOP contract with a Meter Operator. The MOP contract is for the installation and maintenance of a Half Hourly Export Meter at the site of your generator. Ask your installer for further details of MOP contracts.

Ofgem:

Office of Gas and Electricity Markets - the industry regulator. http://www.ofgem.gov.uk/

Ofgem-Accredited Total Generation Meter:

A Total Generation Meter that has been accredited by Ofgem to receive payment for all renewable benefits, including ROCs.

On site Demand:

On site demand is electricity used by any building or property, normally expressed in kWh or MWh. A normal domestic property would use circa 3-4MWh per year and a small business would use 10-30MWh.

Renewable Benefits:

Certificates are issued by Ofgem for each 1 MWh of electricity generated by an accredited renewable generator. These renewable benefits are known as ROCs and REGOs, and are not a payment for the renewable electricity itself, they are a payment for the electricity being generated from a renewable source.

Renewable Accreditation:

Good Energy requires all its Commerial Generators to be accredited with Ofgem for Renewable Obligation Certificates (ROCs), Levy Exemption Certificates (LECs) and Renewable Energy Guarantee of Origin’s (REGOs). Before you sign up with us as a Commercial Generator you should have already started the accreditation process. Good Energy does not currently offer advice to generators looking to become accredited for ROCs, LECs and REGOs.

Renewable generator:

Electricity generation technologies that use renewable resources, such as wind, wave, solar, biomass and small-scale hydro power to generate electricity.

Renewable Energy Guarantees of Origin (REGOs):

Renewable Obligation Certificates (ROCs):

Awarded by Ofgem with every 1 MWh of power generated from a renewable source. This value varies each year with normal market forces, just like any other tradable commodity.

ROC & REGO register:

Supply number:

Total Generation:

The total amount of renewable electricity generated by a renewable generator, normally expressed in kWh or MWh.

Total Generation Meter:

Triad:

For generators Triads are a potential bonus for generating at peak demand times throughout the winter period. Triads are the average demand on the national grid during three peak half hours between November and February each year. Each of the three Triads must be separated by at least ten days from each other.

Year of Generation:

A year of generation runs from the start of April each year to the end of March the following year.

Paying Generators
Find the right Good Energy generator scheme for you

Developing Renewables
Follow our steps to help you set up your renewable energy project