POWER
BEFORE
Grid electricity purchases
WITH CHPGenerate part of your power on site
Buy less grid electricity
ETTCOGEN / ENERGY EXPLAINED
Where do the savings come from?
Cogeneration (CHP — Combined Heat and Power) produces electricity and useful heat in one process. Trigeneration (CCHP) adds cooling made from part of that recovered heat.
The same facility. Less energy purchased separately.
CHP → CCHPHEAT
BEFORE
Separate heat production
WITH CHPCHP heat replaces part of the boiler load
Produce less heat separately
COOLING
BEFORE
Electric cooling
WITH CHPCooling remains electric
—
Electricityheatcooling
Natural gas → CHP
01On-site power
02Recovered heat
03Electric chiller
Your facility
The same goal: electricity, heat and comfort at your facility.
02 / 03
Generate power on site. Use the recovered heat.
CHP uses fuel to generate electricity. Usable heat from the engine and exhaust is recovered for your heating system, reducing the need to produce heat separately.
Qualitative diagram. Line thickness does not represent energy quantities. Grid power and peak-load sources may still be needed.
CHP / CCHP
What actually changes the bill?
Potential savings are avoided costs of the previous supply minus the full cost of operating the new system. Results depend on the facility.
We reduce
Less grid electricity and less separately produced heat, to the extent covered by CHP.
We account for
CHP fuel, maintenance, auxiliary energy, remaining energy purchases and investment or financing.
Three important questions
Does CHP replace all grid power?
Not necessarily. The system is sized for your actual demand profile. Grid power and a boiler may cover peaks or equipment downtime.
Does trigeneration deliver all the heat and cooling at once?
Part of the recovered heat drives an absorption chiller; the rest can be used directly. The same heat is not counted twice. The chiller also needs auxiliary energy and heat rejection.
When can it save money?
When correctly sized equipment has a useful heat or cooling demand and enough operating hours. Energy and fuel prices, maintenance, investment or financing must all be assessed.
Now let’s look at your facility.
Start with a short enquiry. Bills and your operating profile help assess whether this solution fits your needs.