To be able to answer this question more information is necessary, in particular more details about the location of the co-generation station and its proposed size.
This is no different to saying that it is necessary to have a considerable amount of further information before it is possible to answer the naively simple question "How much does it cost to build a house?" or even "How long is a ball of string?". The Related Link shown below gives considerable details about co-generation stations, aka as CHP (Combined Heat and Power) stations.
$1000 trillion
billions of dollars
About 2.4million
Large scale stations cost approximately $5 million each.
The cost of the station has been estimated by ESA as €100 billion over 30 years; estimates range from 35 to 160 billion US dollars.
The International Space Station (ISS) cost approximately $150 billion to build and operate over its lifetime. This includes contributions from multiple countries that participate in the ISS program.
The original Canadarm cost around $100 million to develop and build. Subsequent versions, such as Canadarm2 on the International Space Station, cost approximately $1.4 billion.
The cost to build a space station can vary widely depending on factors such as its size, complexity, technology used, and duration of stay. For example, the International Space Station (ISS) cost around $150 billion to construct and has been continuously inhabited since 2000. Future space stations, such as those planned for deep space exploration or commercial purposes, could have different cost estimates.
it cost 1p to build this building
not as much as it cost to park it in georges bum
It cost about 300 million dollars to build your welcome
It cost about 9,000 pounds to build a Spitfire.