Onsite Power 5
Czech energy-services company that installs and operates on-site cogeneration micro-power plants in customers' boiler rooms under a no-investment usage model.
Last updated September 29, 2026
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Overview
Onsite Power 5 is a Czech energy-services company that builds and operates small on-site cogeneration (combined heat and power) plants inside its customers' existing boiler rooms. Rather than selling equipment, the company installs, owns and services a modern cogeneration unit — a high-efficiency gas engine coupled to a generator — and charges the customer only for the energy actually consumed. The core proposition is that the customer makes no upfront or operating investment: the project, the equipment, the installation and the servicing are provided at no cost, and the customer pays solely for the heat and electricity produced on site. The technology at the heart of the offer is a cogeneration unit that burns natural gas to produce both heat and electricity at high overall efficiency, which the company describes as around 95 percent. The engine drives a generator to produce electricity, while water cooling of the engine supplies heating and hot-water preparation. A small unit rated at roughly 30 kW of electricity and 60 kW of heat can, according to the company, save hundreds of thousands of Czech koruna per year, while larger units from about 200 kW of electrical output can deliver savings in the millions. The equipment is installed in the boiler room and generally does not replace but extends and complements the existing heating equipment. Because generation takes place directly at the point of consumption, distribution losses are avoided, which together with high efficiency underpins favourable energy prices. The commercial model is a usage agreement rather than a sale. The company notes that buying a cogeneration unit outright is usually a matter of at least half a million Czech koruna, before operating costs, daily optimisation and servicing. Under the Onsite model the client changes nothing, solves nothing and invests nothing, does not worry about operating the equipment and does not pay for servicing; the contract for the use of the micro-power plant is concluded for a period of ten years. The company says it states the realistic saving in advance and handles all the paperwork, verifying feasibility and preparing the necessary documentation. It also provides 24/7 monitoring and service from its modern centre. Onsite Power 5 is registered as a Czech company. Its public-facing brand is built around the promise of significant savings — on average around 300,000 Czech koruna per year — and around the slogan that customers do not buy but merely use the plant. The company operates in the Czech market and positions itself at the intersection of energy efficiency, on-site distributed generation and energy-as-a-service contracting.
History
Onsite Power 5 is a Czech company whose public identity is built around the on-site generation of heat and electricity for its customers. The company presents itself as an operator rather than a vendor of energy equipment: it installs a cogeneration unit in the customer's boiler room, retains responsibility for operation and servicing, and charges only for the energy consumed. The company's website describes the heart of the Onsite plant as a modern cogeneration unit — a high-efficiency combustion engine with a generator that produces heat and electricity from natural gas at an overall efficiency of roughly 95 percent. The engine drives a generator to produce electricity, while water cooling of the engine serves as the source for space heating and hot-water preparation. The company's model is aimed at customers who already have a boiler room and existing heating equipment. The unit is generally not a replacement but an extension and complement to what is already installed. Onsite Power 5 argues that locating generation directly at the point of consumption eliminates distribution losses and, combined with high efficiency, guarantees favourable energy prices. It cites typical savings of around 300,000 Czech koruna per year on average, with small units of about 30 kW electrical and 60 kW thermal output able to save hundreds of thousands of koruna annually, and larger units from about 200 kW electrical output able to reach savings in the millions. The commercial arrangement is a ten-year contract for the use of the micro-power plant. The company contrasts this with outright purchase, which it says usually costs at least half a million Czech koruna before operating costs, daily optimisation and servicing. Under the Onsite model the customer makes no entry or operating investment, does not operate the equipment and does not pay for servicing. Onsite Power 5 states that it tells the customer the realistic saving in advance and handles all the paperwork, including verifying feasibility and preparing the necessary documentation. It also provides round-the-clock monitoring and service from its modern centre. Onsite Power 5 is registered as a Czech company. Beyond its own website and its Wikidata entry identifying it as a Czech company, detailed public information about its founding date, ownership, management and financial history is limited in the available evidence. The brand's public communication is focused on the Czech market and on the proposition that customers do not buy the plant but merely use it.
Products and positioning
Energy-as-a-service provider of on-site cogeneration for Czech customers, offering heat and electricity savings with no upfront or operating investment and a ten-year usage contract.
Onsite cogeneration micro-power plant
A modern cogeneration unit — a high-efficiency combustion engine with a generator — that produces heat and electricity from natural gas at roughly 95 percent overall efficiency, installed in the customer's boiler room.
Small cogeneration unit (approx. 30 kW electricity / 60 kW heat)
A small unit that can save hundreds of thousands of Czech koruna per year, according to the company.
Larger cogeneration unit (from about 200 kW electrical output)
Larger units whose savings can reach millions of Czech koruna, according to the company.
24/7 monitoring and service
Round-the-clock monitoring and service from the company's modern centre.
Ten-year usage contract
A contract for the use of the micro-power plant, under which the customer makes no entry or operating investment and pays only for consumed energy.
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