Frequently asked questions

To use enesim, you only need a standard web browser (e.g. Chrome, Firefox, Safari, Edge) and an internet connection. We recommend always using the latest version of your browser.

If you are not a registered user, first create an account. Then you can log in and start creating sources, consumption points, and simulations under your account.

Yes, the guide is available for registered users in the Documentation section in the main menu. You will find detailed instructions and examples there.

Yes, after registering your account, you will have the option to try Enesim in a free mode.

Enesim uses Google Cloud services. The data is stored on servers in Europe.

The definition of electricity sharing valid in Slovakia is set out in Act No. 251/2012 Coll. on Energy. According to § 2, in the electricity sector it means:

19. Electricity sharing is the use of electricity by an active consumer or an energy community at their consumption point, where it concerns:

19.1. electricity generated in a generation facility operated by the active consumer or energy community, or stored in an energy storage facility operated by them, at their consumption point or delivery point, or at another of their consumption or delivery points than where the electricity was generated or stored,

19.2. electricity generated or stored and subsequently supplied to a consumption or delivery point of an active consumer or energy community by another active consumer or energy community, either free of charge or for payment.

EDC stands for Energy Data Center, an information system that ensures the evaluation of electricity sharing in Slovakia. It is operated by the state-owned company OKTE.

The unit kW (kilowatt) represents power - how quickly a device consumes or produces energy.The unit kWh (kilowatt-hour) represents the amount of energy consumed or produced over time.Simply put, a device with a power of 2 kW will consume or produce 2 kWh of energy in one hour.

Yes, a consumption point without interval measurement can still be included in a simulation. You only need to know its annual consumption in kWh and select a standard consumption type in Enesim (e.g. household, company, school, etc.). Enesim will calculate an estimated 15-minute load profile.

A battery (energy storage device) is considered a source during discharge. To include it in a simulation, you first need to prepare your specific 15-minute discharge (supply) profile and then upload your file in the source management section.

To be included in an electricity sharing group, a delivery point (source) must meet the following conditions:

1. It must be equipped with a meter that records interval data.
2. The producer must have a Data Provision Agreement with OKTE.
3. It must not be part of another sharing group at the same time.
4. It must not be included in the mandatory purchase system (state buyer SPP).

Note: From January 1, 2025 to December 31, 2025, all consumption and delivery points (sources) within one group had to be with the same electricity supplier. From January 1, 2026, this restriction no longer applies.

To be included in an electricity sharing group, a consumption point must meet the following conditions:

1. It must be equipped with a meter that records interval data.
2. It must not be part of another sharing group at the same time.

Note: From January 1, 2025 to December 31, 2025, all consumption and delivery points (sources) within one group had to be with the same electricity supplier. From January 1, 2026, this restriction no longer applies.

Yes, electricity sharing in Slovakia is not limited by the type of consumer. Both households and companies (or organizations) can be part of the same sharing group.

No, the source and the consumption point receiving shared electricity do not have to be with the same supplier. This restriction applied only during 2025. From January 1, 2026, it has been removed, and sources and consumption points within one group can have different suppliers.

Joining an electricity sharing group is independent of your electricity supplier. The supplier is informed by OKTE once your consumption or delivery point (source) is approved for participation in a sharing group. They are also notified if you leave the group.

Your electricity supplier must not prevent you from sharing electricity, as this would violate the Energy Act. However, a virtual battery is a commercial product governed by a contract, so its conditions must be respected. Some suppliers may have technical limitations for simultaneously evaluating a virtual battery and electricity sharing and may ask you to terminate the virtual battery service. We recommend checking with your supplier.

Yes, surplus electricity can also be shared for payment. According to Act No. 251/2012 Coll. on Energy, an active consumer or energy community may provide generated or stored electricity to another entity either free of charge or for payment. The specific conditions depend on contractual arrangements and sharing rules.