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PopularH2 Electrolyser
Screening-stage hydrogen electrolyser calculator with technology selector, nominal power and capacity factor; outputs hourly/annual H2, water feed, O2 co-product, CAPEX breakdown, and levelized cost of hydrogen (LCOH).
Hydrogen247 runs
PopularWater Treatment Screening Cost, Energy & Footprint
Screening-stage estimator for water treatment plant CAPEX/OPEX, electricity use, modular unit count, and plot footprint based on water source, end use, and flow.
Other89 runs- Popular
Hydrogen liquefaction
Screening of specific liquefaction energy and levelized cost of liquefaction (EUR/kg) for turning gaseous H2 into LH2 at -253 C.
Hydrogen68 runs
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- Based on IRENA (2022) Innovation Outlook: Renewable Ammonia; C-THRU Ammonia Technical Brief (2022)
Green ammonia synthesis (Haber-Bosch)
Techno-economic screening of an electrified Haber-Bosch ammonia plant fed by green hydrogen and ASU nitrogen.
Energy mass balanceCostingHydrogen 
Direct Methanol Synthesis (CO2 + H2) — Screening Mass Balance, Sizing & Cost Curve (No Gas Compression)
Screening-level direct methanol synthesis calculator: input methanol output, compute H2/CO2 needs, water co-product, key equipment sizing, and CAPEX/OPEX via a power-law cost curve (compression excluded).
Energy mass balanceEquipment sizing+1E-fuels
alexi25H2 Electrolyser
Screening-stage hydrogen electrolyser calculator with technology selector, nominal power and capacity factor; outputs hourly/annual H2, water feed, O2 co-product, CAPEX breakdown, and levelized cost of hydrogen (LCOH).
Energy mass balanceCostingHydrogenalexi247- Based on Industrial Solar / IEA SHC
Concentrating 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.
Energy mass balanceCosting+1Solar - Based on Stolzenburg et al., Efficient Liquefaction of Hydrogen: Results of the IDEALHY Project (2013); DOE Hydrogen and Fuel Cells Program Record 19001 (2019).
Hydrogen liquefaction
Screening of specific liquefaction energy and levelized cost of liquefaction (EUR/kg) for turning gaseous H2 into LH2 at -253 C.
Energy mass balanceCostingHydrogen 
Ethanol Storage (Unloading, Tanks, Transfer, Metering)
Pre-feasibility sizing and costing for a liquid ethanol receiving, storage and transfer asset delivering stable flow to a downstream unit, including tanks, pumping/metering, safety systems, plot space, losses and levelized handling cost.
Equipment sizingCostingE-fuelsalexi20- Based on NREL / Sandia
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.
Equipment sizingCosting+1Storage - Based on IEA Bioenergy Task 33 — Biomass gasification for hydrogen production (Feb 2025).
Biomass gasification to hydrogen
Screening of hydrogen yield (kg/t biomass) and levelized cost (EUR/kg) from thermochemical biomass gasification + water-gas shift.
Energy mass balanceCostingHydrogen - Based on IEA Global Hydrogen Review 2024 — Assumptions annex
PEM 20 MW Germany 2024
PEM water electrolyser, 20 MW, grounded on EU/IEA/IRENA/DOE 2024 techno-economics for Germany.
Energy mass balanceCostingHydrogen - Based on Fraunhofer ISE / Eurostat
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.
Energy mass balanceCostingSolar - Based on World Bank / NREL
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.
Energy mass balanceCostingSolar - Based on FCH 2 JU / Clean Hydrogen Partnership MAWP KPIs; US DOE stationary CHP targets; IEA Global Hydrogen Review 2024
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.
Energy mass balanceCostingHydrogen 
Light Olefin Oligomerisation to Jet-Range Hydrocarbons
Screening-level sizing and cost model for a catalytic oligomerisation unit converting light olefins to jet-range (kerosene-range) hydrocarbons, including recycle of light ends, primary separation, utilities, and equipment-purchase CAPEX with scaling curves.
Equipment sizingCostingE-fuelsalexi11- Based on SLR / PVFarm / IRENA
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.
CostingEnergy mass balanceSolar Water Treatment Screening Cost, Energy & Footprint
Screening-stage estimator for water treatment plant CAPEX/OPEX, electricity use, modular unit count, and plot footprint based on water source, end use, and flow.
CostingEquipment sizing+1Otheralexi89
Anaerobic Digestion (Biogas) Plant
Screening-stage sizing, levelized cost, and operational GHG intensity for an anaerobic digestion biogas unit (agricultural effluents/CIVE/bio-waste).
Carbon footprintEquipment sizing+1Biomassalexi26
Utility-Scale Solar PV LCOE (Ground-Mounted, 5–200 MWp)
Estimates the levelized cost of electricity (LCOE) for a utility-scale ground-mounted PV plant from capacity, capacity factor, and CAPEX/OPEX per MW.
Energy mass balanceCostingSolaralexi44
ATR Hydrogen (Grey/Blue)
ATR hydrogen calculator estimating annual production, fuel/electricity use, CO2 (with/without CCS), and levelized cost of hydrogen (LCOH) using a simple scaling CAPEX + CRF cost model.
Energy mass balanceCostingHydrogenalexi126
PEM Fuel Cell Power Plant
Screening-stage model for a stationary containerized PEM fuel cell system to estimate hydrogen consumption, CAPEX/OPEX breakdown, and LCOE with an optional PSA purification package.
CostingHydrogenalexi53
Dry Batch (Garage) Anaerobic Digester, Garages Count, Percolate Recirculation, Gas Profile
Screening-level mass/energy balance, garage sizing, percolate recirculation loads, CHP capacity, and levelized electricity cost for a dry batch (garage) anaerobic digestion plant.
Energy mass balanceEquipment sizing+1Biomassalexi18
Liquid Methanol Receiving & Storage (Unloading, Tanks, Transfer, Safety) — Pre-feasibility
Pre-feasibility sizing and costing for a liquid methanol receiving and storage system delivering stable flow to a downstream unit, including tank count/volume, pumping energy, losses, and levelized handling cost.
Equipment sizingCostingE-fuels
Kerosene Upgrading (Hydrogenation, Recycle & Separation)
Pre-feasibility sizing, utilities, and cost model for a hydrogen-consuming upgrading unit (hydrogenation + recycle gas + separation/stabilisation) for FT synthetic hydrocarbons.
Equipment sizingCostingE-fuelsalexi16
Large compressed H2 Storage
Screens compressed hydrogen storage volume and total cost impacts alongside electrolyser electricity use and levelized cost of hydrogen (LCOH).
CostingHydrogenalexi47
SAF blendstock hydrocarbon separation unit (distillation)
Screening model for a hydrocarbon separation section recovering SAF blendstock and co-products from a stabilised hydrocarbon mixture, with energy demand estimates and a granular equipment purchase cost split.
Equipment sizingCostingE-fuelsalexi11
