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Drop assets on a canvas, link their flows, and get whole-project LCOE, NPV and mass/energy balances — faster than a spreadsheet, simpler than a process simulator.
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PopularEthanol-to-Olefins (ETO) Front-End Unit
Screening model for an ethanol drying + vaporisation + catalytic dehydration unit producing light olefins for downstream jet-fuel synthesis, including mass balance, utility demands, plot space, and scaled CAPEX/OPEX with levelized cost.
Efuel11 runs
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).
Hydrogen135 runs
PopularMethanol-to-Olefin (MTO)
Pre-feasibility sizing, mass balance, utilities, plot space, and equipment-purchase CAPEX + OPEX for a methanol conversion unit producing olefin/hydrocarbon intermediates for downstream jet-fuel synthesis.
Efuel6 runs
All calculators
Ethanol-to-Olefins (ETO) Front-End Unit
Screening model for an ethanol drying + vaporisation + catalytic dehydration unit producing light olefins for downstream jet-fuel synthesis, including mass balance, utility demands, plot space, and scaled CAPEX/OPEX with levelized cost.
Energy mass balanceEquipment sizing+1Efuel
alexi11H2 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 balanceCostingHydrogenalexi135Methanol-to-Olefin (MTO)
Pre-feasibility sizing, mass balance, utilities, plot space, and equipment-purchase CAPEX + OPEX for a methanol conversion unit producing olefin/hydrocarbon intermediates for downstream jet-fuel synthesis.
Equipment sizingCostingEfuel
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 sizingCostingEfuel
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 sizingCostingEfuel
Power Transformation Station
Screening-stage parametric estimate of substation CAPEX split, annual O&M, total annual cost, and levelized cost per MWh of energy throughput.
CostingOtheralexi18
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 sizingCostingEfuel
Direct Air Capture (Climeworks-style solid sorbent)
Screening model for Climeworks-style low-temperature solid-sorbent DAC: energy use, modular unit count, and levelized cost per tCO2.
Energy mass balanceEquipment sizing+1Otheralexi19
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 sizingCostingEfuel
Based on Energy Policy Group (EPG), 'Combined Cycle Gas Turbine (CCGT): A Romanian Perspective', Jan 2025.Hydrogen-fired gas turbine (power)
Screening electricity output, hydrogen consumption and electricity-only LCOE for a gas turbine firing pure or blended hydrogen.
Energy mass balanceCostingHydrogen- 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 
Olefin Pooling & Polishing (Oligomerisation Feed Conditioning)
Pre-feasibility sizing and costing of an intermediate olefin pooling, buffering, and polishing system delivering a controlled feed to oligomerisation, with capacity scaling curves and levelized cost outputs.
Equipment sizingCostingEfuel
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 sizingCostingEfuel
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.
CostingHydrogenalexi19
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+1Otheralexi78
Large compressed H2 Storage
Screens compressed hydrogen storage volume and total cost impacts alongside electrolyser electricity use and levelized cost of hydrogen (LCOH).
CostingHydrogenalexi38
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 balanceCostingSolaralexi39
Autothermal Reforming (ATR) Hydrogen Plant — Screening Mass Balance & Cost (NETL-aligned)
Screening-stage ATR hydrogen calculator with annual/daily mass & energy balance and CAPEX/OPEX to levelized cost of hydrogen (LCOH).
Energy mass balanceCostingHydrogenalexi114- Based on Argonne National Laboratory / US DOE (Papadias & Ahluwalia); FZ Julich (Caglayan et al.); EWI
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.
Equipment sizingEnergy mass balance+1Hydrogen - Based on DOE Hydrogen Program Records 20007 (Delivery & Dispensing Cost, HDSAM) and 21002 (Fueling Station Cost); cross-checked vs E3S 312/07010 HRS cost model
Hydrogen refuelling station (HRS)
Screening levelized cost of dispensing (EUR/kg) at a 350/700 bar hydrogen refuelling station fed with delivered H2.
CostingEnergy mass balanceHydrogen 
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 balanceCostingHydrogenalexi121
CSP Plant Surface, Cost Breakdown & LCOE Calculator (DNI-based)
Screening-level CSP (solar thermal) sizing and economics from DNI, capacity factor, plant MW, and thermal storage duration, with CSP type selection.
Energy mass balanceEquipment sizing+1Solaralexi19
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+1Otheralexi13- 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 - 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 
Based on Goetz et al. 2016 (Renewable Energy); Frontiers in Energy Research 2021; IRENA; IEACO2 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.
Energy mass balanceCostingHydrogen- Based on Argonne National Laboratory (Papadias, Peng, Ahluwalia 2021, OSTI 1807903) — Hydrogen carriers: toluene hydrogenation techno-economics; Wikipedia LOHC; Chiyoda SPERA.
LOHC 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).
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 balanceCostingGeothermal - 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
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