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Depending on the degree of complexity of the project, the implementation of a new electricity connection, the reconstruction of the existing network or load increase may last from several days to several months. The total time period will depend on how quickly you complete the works to be performed by the customer.
New connection implementation takes place in accordance with the Regulations “System Connection Regulations for the Electricity Distribution System” (information available in Latvian). They lay down the regulation for the implementation of a new electricity system connection or load changes in the existing connection.
If there is no need to reconstruct the electrical network, you will have to pay connection expenses: in a 0.4 kV electrical network – 76,73 EUR, incl. VAT, in a 6-20 kV electrical network – 101,69 EUR, incl. VAT.
If the reconstruction is needed and the connection will meet the ampere fee conditions, you will be able to find out the connection costs quickly and easily by looking at the map of a new connection fee. In other cases we will prepare an offer free of charge: technical requirements and a cost estimate. The costs of implementing a new electricity connection, reconstruction of the existing connection or increasing the load will depend on the requested capacity and the amount of work.
Note that for connections up to 100A 50% of the cost of the works is covered by Sadales tīkls, while the customer covers only the remaining 50%.
If you are connected to a 0.4 kV electrical network with a capacity exceeding 100A or a medium voltage electrical network (6-20 kV), when you use the requested load effectively, you have the opportunity to recover all the funds invested in the implementation of the connection over a five year period. Read more on the terms of recovery of funds here.
New connection implementation and load increase costs are calculated in accordance with the Regulations “System Connection Regulations for the Electricity Distribution System” (information available in Latvian).
The information regarding the construction contractor selected through a tender and the period of the construction works are indicated in your connection agreement.
Yes, if you are comfortable with it, you should also agree separately with the construction contractor on the construction of your part of the electrical network – the scope of works, time and costs. This service and its costs are not included in the connection costs calculated by Sadales tīkls.
No, we will offer full service connection only when the planned works do not affect land of other owners and will be performed within the protection zone or within the building lines of the existing electrical network, as well as there are no other specific restrictions. Read more on the full service connection here.
No, only the applicant for the service can be invoiced and the invoice must be paid in full within the set deadline. In some cases, we may consider extending the payment deadline.
The estimated costs that we specify in the offer are calculated on the basis of average prices in the previous year. The invoice includes the exact costs of the construction contractor selected through a tender according to the scope of the project and the market prices at the time.
Solar panels or wind generators can be installed by both households and business customers who choose to generate electricity from renewable energy sources, while reducing the amount of energy received from the electrical network and the total cost of electricity consumed.
The installation of the microgenerator and adjustment of the inverter must be performed by a construction specialist certified in the field of the construction of electrical installations or in the field of measuring and checking of technical parameters or in a non-regulated field. Non-regulated field – electrical part of power plants, including electric engines and generators (microgenerators); relay protection and automation; electrical wiring of buildings; electrotechnical control, management and automation systems.
No, a permit of Sadales tīkls must be received before connecting the equipment for permanent operation. Until then, the microgenerator may only be activated temporarily for the purpose of adjusting and checking the unit. A microgenerator connected without a permit may pose damage risks to your and neighbours’ electrical installations and cause life-threatening situations for anyone working in the electrical network.
The installation of a microgenerator without the permit of Sadales tīkls is allowed, when an autonomous electricity supply system, which is not connected to the electrical network of Sadales tīkls, is created.
An inverter is an integral link in the microgeneration equipment system. The inverter converts the direct current generated by solar panels and a wind generator into the alternating current used in household.
The inverter you have chosen must comply with the requirements of standard LVS EN 50549-1 – Requirements for Micro-Generating Plants to be Connected in Parallel with Public Low-Voltage Distribution Networks. The unit must provide for the possibility to customise the network protection settings determined by Sadales tīkls and to limit the current electronically to 16A if the nominal current is higher. If you want to include an inverter in the list of microgenerator inverters recognised by Sadales tīkls, please send the technical specification of the inverter, user instructions and a certificate issued by an accredited laboratory to firstname.lastname@example.org before you submit the application for connection of the microgenerator. For additional information please call +371 67726600.
In the event of no voltage, scheduled or unscheduled shutdown in the electrical network, microgeneration equipment that is switched on in parallel work with the common electricity transmission system should be switched off for safety reasons and no electricity is generated.
If, in sunny and windy times, when solar panels and wind generators generate electricity most actively, you consume very little or do not consume at all, the stress on the inverter’s outputs increases. When it reaches the maximum permissible value, the inverter will automatically switch off for safety reasons. Note that for microgenerators that often switch off due to overgeneration, the repayment term will be longer.
Yes, it may, but it is not recommended, because the operation of the microgenerator may cause voltage asymmetry in phases. Moreover, it should be noted that 3-phase meters meter electricity for each phase separately, i.e. the energy generated will not reduce consumption but will be included in net payments.
The fee for transmission and distribution services consists of two parts: the fee for ensuring connection and the fee for supplying electricity. Everyone should pay for ensuring connection, while owners of microgenerators pay for the supply of electricity only when they use the energy previously generated and transferred to the network or purchased from the electricity trader. There is nothing to pay for electricity generated by a microgenerator and consumed at once, so this is the most economically optimal way of using a microgenerator.
No, electricity generated in microgeneration can only be used within one connection or property in which the system is installed, connected and energy is generated. It should be noted that traders often offer to buy back the energy transferred to the network and to divert the payment to cover the electricity bill for another property of the same customer. In such situations, the net payment system stops working.
If you choose to pay for electricity according to the dynamic tariff, your monthly net consumption, or the additional energy purchased from the trader, is divided on the basis of a standard load schedule, and the trader can apply a dynamic tariff plan to the electricity you consume.
The payoff time of generating equipment may vary. In order to shorten this time, we recommend carefully assessing the economic benefits of the microgenerator: aligning the costs of the installation itself, the planned consumption, the generation volume, the number of historic sunny hours in Latvia, the savings, depreciation of the unit in long-term operation and the payoff time. Analyse the electricity consumption data available on the e-st.lv customer portal and consider adapting your usage habits to the efficient use of energy generated!
You will get the largest reduction in your bill if you consume as much electricity as possible when the solar panels or wind generator generate it. The principle is simple: there is nothing to pay for electricity generated by a microgenerator and consumed at once. If you transfer electricity to the network and use later, you must pay the transmission and distribution service fee as well as the fixed part of MPC (according to capacity), and for the part of the energy that you take from the common network in addition to that generated by your microgenerator you will have to pay the full cost (for electricity, transmission and distribution system services and MPC).
Usually, there is no need to reconstruct the electrical network of Sadales tīkls for the connection of solar panels or wind generator, the installation and connection of a microgenerator takes 1-2 months.
A power plant connection is equipped with additional electrical network protection devices and provides two-way active and reactive electricity metering as well as remote reading of these metering data. When drafting the technical regulations, the potential impact of the generating power on the electrical network is evaluated for the power plant connection, and after the power plant is constructed, an inspection of the combined operation of the power plant and the electrical network is carried out, during which load quality measurements in the power plant connection point and other technological tests are performed. Only if the outcome of the inspection is successful, Sadales tīkls issues a permit to connect the power plant to the system.
In order to reduce the power plant’s impact on the operation of the electrical network and the load quality, Sadales tīkls determines the power plant connection point in the system according to the capacity of the power plant to be connected (see the table below).
|Aggregate rated electric capacity of the power plant||Connection point to the ST electrical network|
|up to 11 kW*||0,4 kV power transmission line (PTL)|
|up to 250 kW*||0,4 kV busbars|
|up to 2 MW*||6, 10, 20 kV power transmission line (PTL)|
|up to 10 MW*||6, 10, 20 kV busbars in a 110 kV substation|
|* the connection point may be changed if it is not possible to meet load quality requirements or the existing network load does not permit it.|
If you do not have the opportunity to apply for the service online, please sign and send the appropriate application form (available in Latvian) by email to email@example.com or by post to AS Sadales tīkls, Šmerļa Street 1, Rīga, LV-1006.
Connection restoration forms
New connection implementation and load change forms
Temporary connection implementation forms
Temporary connection (for a construction site) implementation forms
Connection without a meter inplemnetetion form
Merging several meters forms
Backup electricity supply implementation forms
Power supply facility relocation forms
Microgenerator connection forms