FUEL-CELL APPLICATION SPECIFICATION
Yenra | Updated September 7, 2026
Article: https://yenra.com/fuel-cells/

Purpose: specify the service needed before comparing complete fuel-cell systems. Complete one record per exact configuration. Supplier documentation must confirm application suitability and installation requirements.

Application/location and duty (backup/steady/portable/other):
Required net power (kW), annual hours and load profile:
Tolerated interruption, startup and load-response requirement:
Required islanding, black-start and bridging supply:
Useful heat demand (kW and kWh), temperature and seasonal pattern:

SYSTEM SPECIFICATION
Manufacturer/model/configuration and technology:
Rating boundary (stack DC/gross system/net AC):
Ambient and operating conditions:
Net-output and fuel-consumption curves at required loads:
Fuel type, purity, treatment and delivery requirements:
Fuel availability, storage, usable inventory and interruption plan:
Efficiency basis (HHV/LHV), load and included auxiliaries:
Heat actually used by customer, separately from rejected heat:

FICTIONAL ONE-HOUR BALANCE
100 kWh fuel input on LHV basis; 45 kWh net AC electricity.
Electrical efficiency = 45/100 = 45%.
With 30 kWh useful heat: (45+30)/100 = 75% total useful efficiency.
With only 10 kWh heat used: (45+10)/100 = 55%.
Electrical output stays 45 kWh. These are invented examples, not product ratings. Compare electricity and heat separately, with matching heating-value and delivery boundaries.

SERVICE AND EMISSIONS
Current installation manual and approved connections:
Startup/shutdown limits, degradation evidence and service intervals:
Stack replacement, consumables, labor and disposal costs:
Fuel-production pathway, transport and leakage assumptions:
Operating emissions and lifecycle emissions, separately:
Operating references with similar duty and conditions:
Evidence stage (proposed/tested/demonstrated/commercial operation):
Capital/finance/fuel/maintenance cost and tariff assumptions:
Alternative providing the same service:
Unresolved requirement / supplier response / next action:

REFERENCE CONTEXT
The linked article explains the comparisons and limits. Check exact project or equipment documents before using a specification.
DOE’s fuel-cell systems explanation
https://www.energy.gov/cmei/fuels/fuel-cell-systems
DOE’s fuel-cell type guide
https://www.energy.gov/cmei/fuels/types-fuel-cells
DOE’s technology comparison
https://www.energy.gov/cmei/fuels/comparison-fuel-cell-technologies
EPA’s CHP efficiency method
https://www.epa.gov/chp/methods-calculating-chp-efficiency
hydrogen and fuel-cell overview
https://www.energy.gov/cmei/fuels/hydrogen-and-fuel-cell-technology-basics