D 35 · E 36–39

Energy, water and waste companies in Slovakia

Electricity producers including solar plants, gas and heat suppliers, water companies, collection and recycling firms. For suppliers of technology, maintenance, metering equipment and software for the network industries.

We do not yet publish our own counts by industry. We confirm how many businesses in this industry we can supply in the quotation.

Export of the whole industry: €359 (final price). Selections by region, district or your own filters are quoted on request.

Official statistics: 3,032 businesses in Slovakia according to Eurostat, structural business statistics (sbs_ovw_act) (reference year 2024, data as of 30 September 2026). Sections D electricity, gas and heat supply (809) and E water supply, sewerage and waste management (2,223) combined. This is the size of the market, not the size of our database.

What counts as Energy, water and waste

This industry combines section D (electricity, gas, steam and air-conditioning supply) and section E (water supply, sewerage, waste management and remediation). In official statistics it is a small industry with a few thousand businesses, because much of the infrastructure is run by large companies and municipal enterprises.

Installers of solar panels or heat pumps are usually classified under construction (43.21, 43.22). You will find them under Construction and trades.

SK NACEClassification titleFor your selection
35.1Electric power generation, transmission and distributionincluding smaller renewable producers
35.2, 35.3Manufacture and distribution of gas; steam and air-conditioning supplygas companies, heating plants and heat producers
36, 37Water collection, treatment and supply; seweragewater companies, treatment plants
38Waste collection, treatment and disposal; materials recoverycollection firms, recycling, landfills

Regulation: who needs a licence

Most activities in this industry are regulated. Lists of licences are public, but they usually contain no contact details.

Regulatory Office for Network Industries
Doing business in energy requires a permit under Act No. 251/2012 Coll. on energy; permits and price regulation are handled by the Regulatory Office for Network Industries (ÚRSO).
Waste management
Waste collection and treatment are governed by Act No. 79/2015 Coll. on waste. Depending on the activity, they require consent, registration or authorisation.
Water companies
Public water supply and sewerage are mostly run by water companies owned by municipalities and by smaller municipal operations. The latter are often counted under municipalities rather than as separate businesses.

Not in the export

  • permit and licence numbers
  • installed capacity
  • volume of waste processed
  • names of technical directors
  • public procurement information

These 17 columns are included.

A small industry with big differences in size

Alongside a few large energy companies, most entities are small electricity producers, often with a single solar plant and no website. If you are looking for businesses with staff and operations, require a website or phone number.

With waste firms, distinguish collection (38.1) from treatment and recycling (38.2, 38.3). Their customers and needs are different.

Example request

We supply metering and control equipment for boiler rooms and are looking for heat producers and distributors (SK NACE 35.3) across Slovakia with a published email address. How many records is that?

Use cases

Who uses lists like this

Technology suppliers

Offering equipment and maintenance to energy producers and distributors.

Metering and IoT

Reaching heating plants and water companies with meter reading and monitoring.

Recycling and circular economy

Finding partners to process a particular type of waste.

Advisory and finance

Energy audits and project financing.

Questions

Energy, water and waste: frequently asked questions

If they are a company or sole trader with main activity 35.11, yes. Many of them have no published contact; the quotation states the share of records with a phone number or email address.

Yes, selecting by group 38.3 (materials recovery) or 38.2 (treatment and disposal) is possible, also limited to a region.

Water companies with their own IČO are. Operations run directly by a municipality are under Municipalities and public institutions.

3,032 businesses in Slovakia according to Eurostat, structural business statistics (sbs_ovw_act) (reference year 2024, data as of 30 September 2026). Sections D electricity, gas and heat supply (809) and E water supply, sewerage and waste management (2,223) combined. This is a figure from official statistics, not the size of our dataset.

Format, sources, price and outreach rules (§ 116 of the Slovak Electronic Communications Act): questions about all industries.

Energy, water or waste?