Feed-in Tariff scheme

The new criteria from the Government came into force on August 1st, but what exactly is this new criteria and how will it affect potential buyers and impact their earnings or savings from solar?

1. Purpose of the scheme

Renewable electricity is an alternative form of electricity generated from sources that release much less CO2 into the atmosphere. A barrier to generating renewable electricity yourself can be the very high up-front costs. To encourage more people to generate their own electricity, the Government has created the Clean Energy Cash Back Scheme (or Feed-in Tariffs). This creates an opportunity for everybody to become electricity generators. The scheme exists in Scotland, England and Wales but does not run in Northern Ireland

2. Description of the scheme

The Feed-in Tariff (FIT) guarantees you a minimum payment for each unit of electricity you generate from renewable sources. This means that anybody wishing to invest in buying and installing eligible technologies can be confident that the cost of their investment will be recovered. The name comes from the German system where generators were given a fixed price for every unit of electricity they exported to the grid. The scheme is different from the German scheme because in the UK (currently excluding Northern Ireland) the generator is paid for every unit they generate, even if they use all the electricity themselves (the generation tariff). If the generator does export electricity to the grid, they will be paid an extra tariff on top of the FIT (export tariff). In reality, most small-scale installations will receive the export tariff for 50% of their generation as this is the average amount exported by domestic homes.

You are paid for every unit you generate and extra for selling unused units back to the grid.

3. Length of the scheme

The FIT will last 20 years for all eligible renewable electricity generators, (previously 25 years for solar photovoltaic). The FIT will be index linked, so will increase each year by the rate of inflation (RPI). The scheme will be reviewed annually to check that the scheme is working well and able to provide a quicker response to cost and market change. Once the installation has been registered for the feed-in tariffs, it will be able to claim the feed-in tariff that applies at the time of registration for 20 years.

4. Eligible technologies

The table below shows the main technologies that are eligible for the FIT and covered by the REAL Assurance Scheme and how much you will earn if your system is installed after 1st August 2012 (Note: Tariffs will increase with inflation annually).

Tariff level for new Solar PV installations after 1st April 2014 (pence/kWh). For non PV technologies there will be new rates as of April 2014.

Anaerobic digestion





Anaerobic digestion

>250kW - 500kW




Anaerobic digestion






≤15 kW





>15 - 100kW





>100kW - 500kW





>500kW - 2MW





>2MW - 5MW





<2 kW




Solar PV

≤4 kW

Higher rate



Solar PV

≤4 kW

Medium rate



Solar PV

>4 - 10kW

Higher rate



Solar PV

>4 - 10kW

Medium rate



Solar PV

>10 - 50kW

Higher rate



Solar PV

>10 - 50kW

Medium rate



Solar PV

>50 - 150kW

Higher rate



Solar PV

>50 - 150kW

Medium rate



Solar PV

>150 - 250kW

Higher rate



Solar PV

>150 - 250kW

Medium rate



Solar PV


Lower rate



Solar PV

>250kW - 5MW




Solar PV











>100 - 500kW





>500kW - 1.5MW





>1.5MW - 5MW





existing systems transferred from RO



Table A: Listing of all Generation Tariff levels for the current period

*FIT for MicroCHP is a pilot scheme, limited to the first 30 000 installations.
** For information on systems installed before 1st of April 2010 follow the link to the Energy Saving Trust’s webpage on FITs

A full table of eligible technologies and their FIT bands is available on the Department of Energy and Climate Change Website (DECC).

If you do not use all the electricity you produce, you will also receive 4.77 pence for every kWh you export back to the grid (the export tariff). It may be possible for you to negotiate a better export tariff rate with your electricity supplier, though they may only be interested in larger installations with export meters.

Generation income + Export income + Savings on current bills =

Total value


5. Example

A typical home uses 4,500 kWh (units) of electricity annually. A 4 kWp solar PV system would generate around 3464 kWh per year (South Facing no Shading Factor, 37 Degree Pitch). Installed on an existing house after the 1st April 2014, the generation tariff would be 14.38 pence per kWh.

Generation Tariff Income
Generation tariff
X Number of units
= Tariff income

The estimated annual income from the feed-in tariff would be £ 498.12

Number of Units Used/Exported

A typical household would use around 50% of the electricity (1732 kWh) and export 50% to the grid.

Number of units generated
X Percentage exported
= Export tariff units
Export Tariff Income

The export tariff is 4.77 pence for every unit that you export back to the grid.

Export units
X Export tariff
= Export income
Savings from Reduced Grid Electricity

There is also the added benefit that you will use some of the electricity generated, meaning that you will import less electricity from the grid. If you use 70% (2424kWh), this will save around 14 pence per unit.

Units used
X Average tariff electricity
= Total import costs saved
Total Benefit
Tariff income
+ Export income
+ Import costs saved
= Total annual benefit

You can calculate how much your particular system might earn you using the ‘Cashback Calculator’ on the Energy Saving Trust website found here. For technologies other than Solar PV you can use the EST’s Cashback Calculator here

6 Qualifications

6.1 The Microgeneration Certification Scheme (MCS)

The Microgeneration Certification Scheme is an important quality assurance mechanism that sets out both:

  • Standards for installers of small-scale heat and power generators; and
  • Standards for small-scale heat and power generating products.

To qualify for the FIT, your renewable electricity generator must be installed by an MCS certified installer. The products must also be MCS-certified.

Check the MCS website to see which installers and products are listed.

All products and installers must be MCS-certified for you to qualify for the FIT.

6.2 Renewable Energy Consumer Code

Members of the Renewable Energy Consumer Code must abide by the Consumer Code designed to ensure high standards of service. The Renewable Energy Consumer Code is part of the Office of Fair Trading (OFT) self-regulation Consumer Codes Approval Scheme. MCS-certified installers must belong to an OFT backed Code.

Check the Renewable Energy Consumer Code website to see which installers are registered and what you should expect from a RECC member.

The Renewable Energy Consumer Code exists to protect consumers.

6.3 Energy Performance Certificates  for Solar PV installations

The owner/occupier of the building with the renewable technology should now have an Energy Performance Certificate (EPC) to show it is level D or above to claim the full Feed in Tariff rate. If you do not have a valid EPC for the building on which you intend to install on or wire your system to, then you should obtain one in order to identify the current energy performance and EPC rating of your building and any cost-effective measures you can install to improve the rating of your building.

If the EPC shows that your property is not currently at level D or above, you will need to install measures to improve the energy performance of your property and obtain a new EPC certificate showing a rating of level D or above before you apply for FITs. Your PV installation can help you achieve the level D certificate. If you register for the feed-in tariff before you can provide a valid EPC with a level D certificate, you will not be able to provide the level D certificate later to receive the higher tariff.

You need an EPC Level D to claim the full Feed-in Tariff rates For Solar PV.

7. Installing a system and claiming FITs

Before you sign a contract, the installer should survey your site to ensure it is suitable for a particular technology.

For example:

  • Shading from trees and buildings would have a substantial effect on the performance of PV solar panels. 
  • Trees, buildings, hills etc. can have an effect on wind speed and cause unwanted turbulence, affecting the performance of wind turbines.

Once your system has been installed, the MCS installer will provide you with a certificate of installation and register the installation with Ofgem on the central FIT register.

You must then inform your chosen electricity supplier that you are eligible for the FIT and provide them with both the MCS certificate and Energy Performance Certificate. The electricity supplier will cross-check the installation with the central FIT register and the EPC register. Payments will then be made by the energy supplier on a quarterly basis (unless otherwise agreed).

The EPC register is through Landmark Information Group.

For a complete list of the Licensed Electricity Suppliers follow the link to the Ofgem webpage: http://www.ofgem.gov.uk/Sustainability/Environment/fits/rfitls/Pages/rfitls.aspx

  • Your installer carries out a site survey to check suitability of the technology for the site
  • An Energy Surveyor carries out a survey and provides you with an EPC Level D or above (if not already obtained)
  • Your installation is carried out by an MCS-certified installer
  • The installer registers your installation on the MCS/Ofgem central FIT register and provides you with a certificate
  • You inform your electricity supplier, who then check that the appropriate registers correspond to your certificates
  • Your electricity supplier will then make payments to you on a quarterly basis

8. Registration and deadlines

Deadline Checklist:

  • Who is responsible for making the application – you or the installer?
  • What are the methods for submitting an application form - hard copy or online/electronically
  • What is the deadline date and time?
  • Ensure the application will arrive on time
    • do you need next day delivery?
    • should you use special delivery?
    • will the office be open to receive applications on a Weekend?
  • Are you clear from your energy supplier what documents exactly need to be sent?
  • Have you included your EPC level D certificate?

After you have had an installation completed and have been provided with an MCS certificate and proof of ownership (paid invoice), you will need to apply to an electricity supplier. You should contact the electricity supplier to find out if you need to complete a hard copy or if you can apply online.

To meet a deadline, you must ensure your application has been received before the deadline cut off date and time. The deadline cut off is usually at midnight the day before the new tariff rates are implemented. If you apply via hard copy, ensure you have posted the application in time for it to be received by the electricity supplier. You should consider next day delivery services, such as special delivery, so that you can demonstrate the application was received in time. If the deadline falls on a weekend, check if the offices will be open to receive mail on a Saturday. The electricity supplier will process your application and request that you provide a generation meter reading from which your FITs rate will be paid. You will not be paid for any generation before the meter reading is provided. Your 20 years of FITs will begin at the point of registration, not the date of installation.

9. Multiple Installations

If an individual or a single organisation receives FITs payments for more than 25 installations at different sites, then they will be eligible for a lower Feed-in Tariff rate on new installs. See table in section 4 for rates.

Multiple installs will get a lower tariff.

10. The future

10.1 Inflation

Both the Generation Tariff and the Export Tariff are index-linked which means they will increase (or decrease) with inflation (RPI index). The tariffs will be adjusted to ensure a positive return on investment (ROI).

FITs will increase with inflation.

10.2 Degression

The rates of the Feed-in Tariff will be adjusted to reflect the costs of the technologies. As the technologies improve and the volume of installations increases, the costs of installing should decrease. The tariff rates are intended to provide a rate of return of between 5% and 8%. Since the tariff scheme was introduced, a total budget was introduced for the whole scheme which means the tariffs will need to be cut frequently and more severely than had originally been envisaged.

For Solar PV, there could be tariff reductions every 3 months. If the registration of new installations is high, the tariff will be reduced in the next quarter. The amount of reduction could be between 3.5% and 28%. If the rate of new registrations is low, then there might not be any reduction in tariff rate in the next quarter. If there is no reduction in tariff for 2 successive quarters, then there will be an automatic reduction in the tariff rate of at least 3.5% in the following quarter. New rates will be announced 2 months before they are put in place and will be based on the deployment of the previous 3 months.

The degression of the other technologies is still under consultation. At the moment, degression is reviewed annually and comes into force on the 1st of April of every year.

Tariffs will decrease for new installations.

10.3 Expansion

Two or more different technologies can be installed at the same site and be paid separate tariffs, (e.g. PV solar panels and a wind turbine). If a particular technology is installed at a site and the capacity of the system is increased, the extended part of the system will receive the tariff that applies at the time of the installation. The rate received will depend on the total installed capacity of that technology at that site.

The first installation keeps the existing band and the second installation enters the band for the combined capacity.

Two Installations at the same site
2.5kWp installed January 2011 + 2.5kWp installed April 2014 = 2.5kWp at 43.3p/unit + 2.5kWp at 14.38p/unit

11. Electricity suppliers  

FITs are paid to you by Licensed Electricity Suppliers (LES) approved by Ofgem - they are not paid by the Government. The licensed suppliers raise the money for the FIT by charging a small premium to all of their electricity customers. They are also permitted to charge for administration costs. It is predicted that by 2020, each electricity customer in the UK will have to pay roughly an extra £10 on their annual bills to cover this. Once a year, the LES will settle the amount they have paid between them to ensure consumers are all charged the same surcharge on their bill.

You do not have to register with your existing electricity supplier. You can choose another supplier but only the big six electricity suppliers are required to accept your application, (EDF, ScottishPower, British Gas, Scottish and Southern, E.on and Npower). If you choose a smaller Electricity Supplier, they may insist you switch your supply to them. For a full list of the Licensed Electricity Suppliers visit the Ofgem website page - http://www.ofgem.gov.uk/SUSTAINABILITY/ENVIRONMENT/FITS/RFITLS/Pages/rfitls.aspx

The scheme is not funded by tax-payers - it is paid for by all electricity consumers.

12. Grants and other incentives

Previously there were grants available for renewable electricity and heat generators under the Clear Skies Scheme and then later the Low Carbon Buildings Programme. These have now finished. Generally, systems that were installed using these funds will not be eligible for FITs. In Scotland, the Energy Saving trust are offering interest-free loans of up to £2,000 to domestic consumers to install microgeneration technologies. The loans are fund limited, will be paid back over 4 years and will be issued on a first come first serve basis. You may also be eligible for the Feed-in Tariff as well as this. For more information on grants, see the Energy Saving Trust website.

For England and Wales- http://www.energysavingtrust.org.uk/england/Generate-your-own-energy/Financial-incentives

For Scotland- http://www.energysavingtrust.org.uk/scotland/Take-action/Grants-and-offers/Home-renewables-loan-scheme

Interest Free Loans in Scotland- http://www.energysavingtrust.org.uk/scotland/Take-action/Grants-and-offers/Home-renewables-loan-scheme

For Northern Ireland- http://www.energysavingtrust.org.uk/northernireland/Take-action/Grants-and-savings/Energy-saving-grants-and-offers

Under the new criteria, in order to benefit from the maximum feed-in-tariff available for domestic installations, which currently stands at 14.9p/kWh for any system up to a '4kW system', all homeowners will need to produce an Energy Performance Certificate (EPC) with a rating of D or above. This is something that the Government believes will rule out 50% of homes in their current state.

The good news is that you can use an existing EPC for your home, provided that it is less than 10 years old. You should have a valid EPC certificate if you've recently purchased your house, rented your property out, or even put your house on the market and decided not to sell, then you should have an active EPC already. If you don’t have a current EPC, Eurosolar will help you to get it if you order your Solar Panels from us..

We are not sure whether the Government's initial estimation of 50% of properties not being suitable is quite accurate. Some industry insiders estimate that 8 out of 10 properties will achieve a D rating either straight away, or after minor improvements such as loft or cavity wall insulation. Eurosolar has its own scheme set up and offers that include these EPC-boosting extras,  for a small extra charge.

If you do require some improvements in order to raise your home's EPC its worth definitely worth doing so the relative small cost and long term benefit. For those that may simply require loft and/or cavity wall insulation, which costs a few hundred pounds, the benefit and earnings from having solar panels installed that can generate up to £988 per year for 20 years up to 20.73 % per year (8.19% AER), is clearly worth that small additional cost. Having EPC “D” rating means that your solar energy that you generate from your solar panels will be much more valuable and 'go further' if your property retains more energy through its walls, roof or windows.

So although the new criteria may seem quite restrictive at first glance, the reality is that many properties will not only be sufficiently energy efficient, but they will already have an EPC that they can use. The remaining properties, many of whom will require only small amendments to achieve a D rating, will be forced to benefit even more from their solar panel installations by improving their energy efficiency.

 Solar PV changes

For solar PV installations with an eligibility date on or after 1 April 2014:

  • The new tariff rate for solar PV <4kWp will drop to 14.38p/kWh with an EPC band D or higher (if band E or less the lower tariff rate has also dropped to 6.85p/kWh). Full tariff table below.
  • The export tariff rate will increase to 4.77p/kWh for all new solar PV installations.
  • The tariff period (lifetime) will be 20 years for all new solar PV installations.
  • The tariffs are to be reviewed every three months and will be revised according to deployment rates

    Summary of solar PV tariffs for systems with an eligibility date on or after 1st April 2014

    Band (kW) Standard generation tariff (p/kWh) Multi-installation tariff (p/kWh) Lower tariff (if energy efficiency requirement not met) (p/kWh)
    <4kW (new build and retrofit) 14.38 12.94 6.61
    >4-10kW 13.03 11.73 6.61
    >10-50kW 12.13 10.92 6.61
    stand-alone 6.61 6.61 6.61


     Other technology changes (wind, hydro and microCHP)

    For wind, hydro and microCHP installations with an eligibility date on or after 1st JApril 2014:

    • The UK Government has confirmed there will be NO EPC requirement for non-solar PV technologies
    • MCHP installed technology will receive more than 13.24p/kWh. See full tariff table below.
    • The export tariff rate for new installations will go up to 4.77p/kWh
    • Hydro –≤15 kW £0.2057 

    i) Microhydro (<50kW) accreditation has to go through the ROO-FIT process not MCS

    ii) The definition of “hydro generating station” has been extended to include small tidal projects

    • A degression mechanism for wind and hydro technologies (microCHP not included) will become effective from 1 April 2014 (baseline 5% though will depend on previous deployment rates)

    General changes

    The UK Government are also making the following changes:

    • All multi-installation projects including social housing will be able to get a generation tariff equal to 90% of the standard tariff
    • A definition for community energy projects with a system of tariff guarantees and an exemption from meeting the energy efficiency requirements of EPC Level D or above for solar PV community and school installations
    • Amending the definition of “site” to prevent abuse of the scheme and to ensure that installations that necessarily share network connections, e.g. park homes and remote hydro installations, can access FITs on an individual basis
  • For more information, please visit the DECC website

    DECC has produced a guide for consumers.[filetype:pdf filesize: 27.03Kb] Renewable Energy Assurance Limited (REAL) has written to installers explaining how the changes will affect them.

    Consumers and industry representatives should also view the ‘Where do I find out more’ section to find out who to contact for further information.

    If you are considering generating your own electricity, the Energy Saving Trust[External link]website also offers information about your options. Energy Savings Trust helpline: 0800 512 012.


    Feed-in Tariffs (FITs) became available in Great Britain on 1st April 2010. And isn’t available in Northern Ireland - although this is under review.

    Under this scheme energy suppliers have to (compulsory for big six suppliers) make regular payments to householders and communities who generate their own electricity from renewable or low carbon sources such as solar electricity panels(PV) or wind turbines.

    The FITs scheme guarantees a minimum payment for all electricity generated by the system, as well as a separate payment for the electricity exported to grid. These payments are in addition to the bill savings made by using the electricity generated on-site.About the Scheme

    Once you have a microgeneration technology installed you should experience a monthly reduction in your electricity bill and then receive an income from your Feed-in tariff provider. However, if you have taken out a loan to pay for the installation you will have to make monthly repayments to your loan company.

    Feed-in tariffs are designed so that the average monthly income from your installation will be significantly greater than your monthly loan repayment (with a 20 year loan).

    Use the cashback calculator to see how purchase price and loan can impact on payback times.

    The scheme covers the following electricity-generating technologies, up to an installation size of 5 Mega Watts:

    • Solar electricity (PV) (roof mounted or stand alone)
    • Wind turbine (building mounted or free standing)
    • Hydroelectricity
    • Anaerobic digestion
    • Micro combined heat and power (micro CHP) (limited to a pilot at this stage)

    The tariffs available and the process for receiving them vary, depending on when the technology was installed, and whether the system and the installer were certificated under the MCS* scheme. See below for further details

    You will qualify for the full FIT payments if:

    • The technology was installed between 15th July 2009 and 31st March 2010 and you transfered to FITs before 1st April; OR
    • It is installed after 1st April 2010 using an MCS* certificated product and installer;

    * The Microgeneration Certification Scheme (MCS) is an independent scheme that certificates microgeneration products under 50kW and installers in accordance with consistent standards. Any commercial or larger scale systems, over 50kW, and all anaerobic digestion installations must apply directly through the Renewables Obligation Order feed-in tariff process for larger installations (ROO-FIT) process as they are not covered by the MCS. Information on the ROO-FIT process is available on Ofgem’s website.

    Government review of FITs

    The Department of Energy and Climate Change (DECC) have announced they are bringing forward their review of Feed-in-Tariffs which will be completed by the end of 2011 (originally scheduled for 2012).

    The comprehensive FITs review will:

    • Assess all aspects of the scheme including tariff levels, administration and eligibility of technologies
    • Be completed by the end of the 2011, with tariffs remaining unchanged until April 2012 (unless the review reveals a need for greater urgency)
    • Fast track consideration of large scale solar projects (over 50kW) with a view to making any resulting changes to tariffs as soon as practical, subject to consultation and Parliamentary scrutiny as required by the Energy Act 2008.

    Further information is available on the DECC website.

    What payments will you be eligible for, and how can you claim them?

    The tariffs available and the process for receiving them vary, depending on when the technology was installed, and whether the system and the installer were certificated under the MCS scheme:

    The following advice applies to domestic installations. If you have installed a qualifying electricity-generating system in a non-domestic property with a grant from the Low Carbon Buildings Programme, see the Low Carbon Buildings Programme website for further guidance.

    Installed before July 15th 2009 and previously collected Renewables Obligation Certificate (ROCs) payments

    • If you contacted Ofgem before 1st October 2011 to get your ROC transferred to the FIT then you will receive 9.4p/kWh for every unit generated plus 3.1p/kWh for every unit exported

    Installed before July 15th 2009 but not registered for Renewables Obligation Certificates

    • If you didn't contact Ofgem by 31st March 2010 to apply for Renewables Obligation accreditation then you won't be eligible for FITs.
    • If you did register with Ofgem by 31st March 2010 then you will receive the flat tariff of 9p/kWh for every unit generated plus 3p/kWh for every unit exported.

    Installed between 15th July 2009 and 1st April 2010

    • You will get full FIT payment if your installation is MCS certified (installer and product). You can apply after April 1st 2010 if you haven’t already.
    • If your installation wasn’t MCS certified and you didn’t contact Ofgem by 31st March 2010 to apply for Renewables Obligation accreditation then you won’t be eligible for FITs

    Installed after 1st April 2010. MCS certificated product and installer

    • You are eligible for full generation tariff and export tariff.
    • Contact your energy supplier, and send them your MCS certificate to tell them you are eligible to receive FITs.
    • If you install after the 2nd year of the scheme your tariff could be reduced, depending on the installation size.

    Installed after 1st April 2010. Non-MCS certificated product and installer

    • Systems that are not MCS certificated will not be eligible to receive the FIT generation tariff or the guaranteed FIT export tariff. There is the possibility of receiving generation and export tariffs outside of the FIT scheme if privately negotiated.
    • You will still benefit from lower electricity bills. The saving will depend on how much of the electricity you generate is used on-site.
    • The one exception to this is microhydro which will be eligible for the ROO-FIT process even if it is under 50kW in size. Enquiries for this should go to Ofgem, email renewable@ofgem.gov.uk

    Small Generators (50kW to 5MW) installed from 15th July 2009

    • If you switched from Renewables Obligation Certificates (ROCs) to FITs before 1st April, then you will be eligible to receive the full generation tariff and export tariff.

    Don’t forget energy efficiency!

    Before you invest in renewable or low carbon energy systems you should always make sure you house is as energy efficient as possible, so that the energy you generate is not wasted. You should ensure you have carried out the following measures:

    • Ensure you have adequate loft and cavity wall insulation.
    • Check you have installed heating controls
    • Replace all old bulbs with low energy lighting
    • Always buy Energy Saving Recommended rated appliances

    These measures will help lower your energy bills, and ensure that the energy you generate is used as effectively as possible.

    Find out how to make your home more energy efficient

    Once your system is installed you should review the way you use energy in the home so you can make the most of the energy you generate. For example, solar electricity panels only generate electricity during the daylight hours, so it’s a good idea to use the washing machine and dishwasher during the day, rather than at night time. This means you can minimise the amount of electricity you have to buy from your supplier.

    Financial support may be available for help with upfront costs of installing energy efficiency measures. Go to the grants and offers page to find out what is available in your area.

    Frequently Asked Questions

    Will I be eligible to receive the tariff if I move into a home that already has an electricity generating technology?

    FIT eligibility remains with the installation, even if the ownership of the home or generating technology changes. Therefore the technology must have been eligible before you move in, even if it is not registered yet.

    What happens if I move home?

    Ownership of the technology is linked to the site and, therefore, in the case where a building or homeownership changes, the ownership of the technology would also transfer to the new owner.

    I rent my property. If my landlord installs an electricity generating technology, who would receive the FITs?

    It will be up to landlords and tenants of domestic or commercial property to come to an arrangement about the receipt of payments and on-site electricity use benefits.

    Will I need a special meter to be able to claim FITs?

    Generation must be metered and FITs payments are made to generators on the basis of metered generation. Meters will need to be able to measure generation, usage and import. However, as an interim measure, DECC has announced that at the very small scale, the amount of exports for the payment of export tariffs can be deemed (estimated), subject to the following:

    • These arrangements will only apply until the finalising of specifications for smart meters;
    • These arrangements do not apply if export meters exist already, or are provided at the generator's expense

    My system is not connected to the electricity grid – can I still claim the Feed-in Tariff?
    Yes you will be eligible to receive a generation tariff at the tariff rate that is applicable for the type and capacity of the generating technology. You will also have to sign a declaration stating that all of the electricity generated on site will be used and not wasted.