Open Jack
CreatorFounder · OpenJack
Member since June 2026
- Calculators
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Published calculators20
Sorted by most popularHydrogen liquefaction
Screening of specific liquefaction energy and levelized cost of liquefaction (EUR/kg) for turning gaseous H2 into LH2 at -253 C.
PEM 20 MW Germany 2024
PEM water electrolyser, 20 MW, grounded on EU/IEA/IRENA/DOE 2024 techno-economics for Germany.
Agrivoltaic PV plant with dual land use
Elevated PV over a cultivated plot: light transmission sets the capacity density, the crop class sets the yield it costs, and the calculator reports LCOE, revenue per hectare and the French decree tests side by side.
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CO2 methanation (Sabatier, power-to-gas)
Screening synthetic natural gas (SNG) output and levelized cost (EUR/MWh) for catalytic CO2 methanation from green hydrogen and captured CO2.
PEM fuel cell CHP (H2 to power + heat)
Techno-economic screening of a PEM fuel cell cogeneration system: electricity, recovered heat, H2 consumption and electricity-only LCOE from a hydrogen feed.
Biogas Feedstock Mix & BMP Potential (CH4/CO2/Digestate) (fork)
Estimate annual biomethane potential from a mixed feedstock inlet using TS (MS), VS (MV), BMP and biogas CH4 content; outputs biogas, CH4, CO2 and digestate quantity.
Underground H2 storage (salt cavern)
Screening levelized cost of storage (LCOS) for hydrogen in solution-mined salt caverns: working capacity, annual throughput, injection energy and EUR/kg storage cost.
Green ammonia synthesis (Haber-Bosch)
Techno-economic screening of an electrified Haber-Bosch ammonia plant fed by green hydrogen and ASU nitrogen.
Biomass gasification to hydrogen
Screening of hydrogen yield (kg/t biomass) and levelized cost (EUR/kg) from thermochemical biomass gasification + water-gas shift.
Hydrogen refuelling station (HRS)
Screening levelized cost of dispensing (EUR/kg) at a 350/700 bar hydrogen refuelling station fed with delivered H2.
PV inverter conversion, clipping and levelized cost
Turns a PV inverter datasheet into AC energy delivered, conversion and clipping losses, and the levelized cost of the conversion step.
Open JackLOHC hydrogenation (toluene to MCH)
Screening reaction energy and levelized cost (EUR/kg H2) of binding hydrogen into a toluene/methylcyclohexane liquid organic carrier for ambient-condition transport (hydrogenation leg only).
PV module yield & levelized cost (module-level)
Turns a PV module datasheet into annual yield, degradation-adjusted lifetime energy and levelized cost.
Open JackConcentrating solar process steam
Linear Fresnel solar field delivering 150-390 C industrial process steam: annual yield, steam tonnage, solar fraction and LCOH in EUR/MWh_th, with no power block.
Molten-salt two-tank thermal storage
Sizes a two-tank solar-salt heat store from its usable temperature swing: salt inventory, tank geometry, standing loss per day, freeze protection and the levelised cost of the heat it delivers.
Commercial rooftop PV with on-site self-consumption
Prices a 100 kWp to 5 MWp commercial roof on the retail electricity it avoids: generation, self-consumed versus exported share, rooftop LCOE, net annual saving and simple payback.
Floating PV plant on water body
Floating solar on a reservoir: mooring-driven CAPEX premium, net water effect on yield, water surface occupied and LCOE against the same plant on land.
Solar thermal collector field for heat
Sizes a flat-plate or evacuated-tube collector field delivering 60-110 degC heat, and levelizes its cost in EUR/MWh_th. Calibrated against the measured Danish fleet.
Utility-scale PV repowering at mid-life
Prices the mid-life replacement of modules and inverters on an operating PV plant as an increment over letting it run.
Building-integrated PV facade
BIPV on a building envelope: cost per m2 of skin net of the cladding it replaces, production read on the real vertical plane, and the levelized cost that comes out of the two.