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About embedded generators

Embedded generators (EmGs) are connected to your electricity supply and provide electricity for onsite use. They also have the capability to export electricity back to the grid.

JE provides the remainder of the electricity demand to the site, including a backup service when an EmG is not operational.

Man installing solar panels on roof

Types of generator

Typical examples of EmGs that may qualify for our Green Export Guarantee tariff include:

  • Wind turbines
  • Photovoltaic (solar panels)

Embedded generators must be:

  • Up to a facility size of 70kWp 3 Phase / 20kWp Single Phase
  • Approved by Jersey Electricity under Engineering Recommendations G83/2 or G59/3, depending on the rating of the generator
  • Connected in parallel to our network

Installations above 70kWp will be reviewed on a case-by-case basis. Typical kW peak refers to the maximum rating of the EmG.

For further advice contact our Customer Care team.

Tariff rates

The card below shows the current rates for the current Green Export Guarantee tariff. These rates are subject to change.

Rates effective from 1 January 2024.

As of 1 January 2025, the below rates for the Green Export Guarantee will be changing to 9.3p Price per unit. These rates are subject to change.

Buy Back Commercial

Price per unit

Buy Rate 8.69p

Standard Commercial service charge

Single phase per day 21.97p
Three phase per day 48.05p

E7 & Comfort Heat service charge

Single phase per day 26.07p
Three phase per day 57.92p

Standard Max Demand service charge

Per day 127.53p

E7 Max Demand service charge

Per day 143.08p

All rates are inclusive of GST

Standby Charge

Commercial EmGs connected in parallel with Jersey Electricity's network after 1 January 2025 will incur a Standby Charge of £4.26 Excl GST (£3.38) per kWp per month for installations up to 70kWp, irrespective of whether the premise with EmG is on the Green Export Guarantee.

We will determine the Standby Charge for Commercial installations greater than 70kWp on a case-by-case basis.

Find out more about the Standby Charge >

The current Standby charge as of 1 January 2024 is £3.97 Exc GST per kWp per month for installations up to 50kWp, irrespective of whether the premise with EmG is on the Buy Back Tariff.

FAQs

What is the Green Export Guarantee?

The Green Export Guarantee is how JE purchases electricity exported from small renewable generators on the Island (for example solar panels on a roof). The Green Export Guarantee tariff pays a set price for all electricity exported from an applicable generator, the rate is published on our website.

What is the Green Export Guarantee eligibility?

The Green Export Guarantee is for all renewable generators below 70kW (70kW is approximately 100-250 solar panels). There may be different rates for domestic and commercial customers. Other requirements, such as the correct metering and a certified installation are applicable.

How is the price set?

The tariff rate is set to reflect the value of the exported power to JE, this is equivalent to the offset cost of buying electricity from France and importing it through the interconnector. As most of the generation is from solar panels, the rate is weighted towards the value of electricity in the middle of the day and in summer.

In general the export will follow other JE tariffs (e.g. the domestic supply tariff) but may vary sometimes, especially if the price of electricity in the winter evenings increases more relative to when the Green Export Guarantee volume occurs.

The tariff will be recalculated annually and will reflect a fair and reasonable price in line with the commitments in our Customer Charter.

Will there be future changes to the Green Export Guarantee?

We reserve the right to make reasonable changes to the terms of the Green Export Guarantee and will endeavour to ensure any changes are within the principles set out in our Customer Charter of being fair, secure, reliable and sustainable.

Our terms

The terms of the Standard Export Agreement which are set out below will be applicable in addition to our General Terms and Conditions of Supply.

STANDARD EXPORT AGREEMENT

This agreement relates to the supply of electricity by you to us as a customer.

1.    DURATION OF THE STANDARD EXPORT AGREEMENT
This agreement starts from the time that an export meter is installed and commissioned under Clause 2 below and will continue until it ends under Clause 4 below, and following the end of this agreement we will be entitled to remove the export meter at our discretion.


2.    EXPORT VOLUME, MEASUREMENT AND PRICE
Subject to us approving (in our unfettered discretion) your generation facility and your request for an export meter, we will install and commission an export meter at your Premises. The installation of the export meter may incur charges, which we will communicate with you prior to installation.
We will obtain readings from your export meter periodically and based on the kWh exported by you in accordance with those readings your regular bill will be credited in arrears. The applicable tariffs per kWh will be those published by us from time to time on our website – www.jec.co.uk. 
The provisions of the General Terms and Conditions for Supply (including but not limited to clauses 4 and 5) shall apply to the export meter.


3.    EXCLUSIVITY
Where an export meter is installed by us at the Premises, you are not permitted to supply electricity to anyone other than us. 


4.    ENDING THE STANDARD EXPORT AGREEMENT
This agreement will end when one of the following occurs. 
•    You advise us that you no longer wish to generate electricity at the Premises.
•    You enter into a power purchase agreement with us in respect of the generation of electricity from the Premises.
•    You advise us that you no longer either own or occupy the Premises at which the generation facility is situated, in accordance with Clause 7 of the General Terms and Conditions for Supply.
•    You have breached any provision of this agreement or the General Terms and Conditions for Supply, or circumstances arise which legally entitle us to end this agreement for safety reasons and we write to you to advise you that this agreement is ended.
•    We choose to terminate this agreement for any reason, provided we give you 30 days written notice.


5.    GENERAL
•    We may vary the terms of this Standard Export Agreement at any time, and any such variations will come into effect one month after publication on our website.
•    The provisions of the General Terms and Conditions for Supply, and the Standard Connection Agreement shall apply to this Standard Export Agreement.

Lyndsey Noel

Your Customer Number

Your 5 character Customer Number can be found in the top right and bottom left corners of your bill.

Example electricity bill with the customer number highlighted

Daily Service Charge

The Daily Service Charge covers energy support services such as metering, billing, Customer Care, safety obligations and other energy support services.

Off-peak

Off-peak means not at the most popular time. Some of our tariffs provide discounted rates at off-peak times - for example, during certain periods at night.

Off peak charging times

Our current off peak electric vehicles times are from 00:00 to 06:59.

Dedicated supply circuit

A dedicated supply circuit is an electrical circuit that is set aside for a specific purpose, such as powering a boiler. It will work with a single appliance only.

It will have its own circuit breaker in your fuse box, and no other device or appliance will be able to draw power from it. A dedicated supply circuit ensures that appliances can draw the current they need without overloading your system, blowing a fuse or tripping an electric circuit.

Invoice Number

This can be found on the top right corner of your bill here

Example electricity bill with invoice number

Premise Number

This can be found on the top right corner and bottom left corner of your bill.

Example electricity bill with premise number highlighted

Payment Slip

This can be found at the bottom of your bill here

Bill payment slip example

Peak Load

Peak load or peak demand is a short period when the demand for electricity is at its highest.

Kilowatt Hours

Electricity consumption is usually measured in kilowatt hours, or kWh for short. Each kWh of electricity equates to 'one unit of electricity' for billing purposes. A 1kW (1,000 Watts) appliance in use for one hour = 1kWh (one unit). The cost per unit used depends on which tariff you are on.

Three phase

Residential homes are usually served by a single-phase power supply, while commercial and industrial facilities usually use a three-phase supply.

One difference between single-phase and three-phase is that a three-phase power supply better accommodates higher loads. Single-phase power supplies are most commonly used when typical loads are lighting or heating, rather than large electric motors.

Another important difference between 3-phase power and single phase power is the consistency of power delivery. Because of the variations in voltage, single-phase power supply does not offer the same consistency as a three-phase power supply. A three-phase power supply delivers power at a steady, constant rate.

kVA

A kVA is simply 1,000 volt-amps. A volt-amp, or ampere, (VA) is the voltage times the current feeding an electrical load.

Embedded generator

Embedded generators like wind turbines and solar panels are connected to your electricity supply and provide electricity for onsite use. They also have the capability to export back to the grid.

Smart Card Number

Your Smart Card Number is the 19-digit number displayed below the barcode on your Smart Card.

The Smart Card Number also contains your six-digit Meter Number that is also displayed on your meter. You need this to top up a Smart Pay As You Go Meter whether at a Payzone outlet or online.

Example of Smart card for meter charging

Smart Card

A Smart Card contains your unique Smart Card Number used when topping up a Smart Pay As You Go Meter.

Example of a smart card for meter charging

F-Credit

F-credit is a Pay As You Go meter display and means Friendly Credit. It is the period between 9pm and 8am. If the credit on your meter runs out during this period, your supply will remain on until 8am.

Decarbonise

The process of reducing carbon by replacing fossil fuels with fuel that is less harmful to the environment such as low-carbon electricity.

Regenerative braking

With conventional braking systems, the kinetic energy that was propelling the vehicle forward gets converted to unwanted and wasted heat by the friction of the brakes.

Regenerative braking recaptures much of the car's kinetic energy and converts it into electricity, so that it can be used to recharge the car's batteries.

In addition to improving the efficiency of a vehicle, regeneration can significantly extend the life of the braking system, as the mechanical parts will not wear out as quickly.

Power factor

Power factor is the ratio of useful power in kilowatts (kW) to apparent power, measured in kilovolt amperes (kVA). A perfect power factor would be 1.0, however in reality this is almost impossible to achieve. Office buildings are usually between 0.98 and 0.92. Bad power factor is anything below 0.85.

Electric flow boiler

Electric flow boilers are simple to install, quiet in operation, 100% efficient and integrate into most existing radiator or underfloor piped systems. Plus, with no flue or storage tank, an electric boiler is a space-saving option that can be installed almost anywhere in your home.

Approved heating system

A heating system, approved by Jersey Electricity, on a dedicated supply for use on one of our discounted heating tariffs.

To learn more about what's required for an approved heating system, view our current approved heating guidelines.

20-digit payment code

The 20-digit payment code is issued with your receipt for a Pay As You Go (PAYG) meter top-up. If your meter did not charge automatically, you can do it manually with the payment code. Press button A on your meter then key in your 20-digit payment confirmation code on the meter keypad, then press button B. Your meter will recognise the amount paid and charge accordingly.

Single phase

Single-phase power supplies are most commonly used when typical loads are lighting or heating, as in a domestic home, rather than large electric motors and higher loads. Single-phase power is a two-wire alternating current (AC) power circuit.