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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).
Hydrogen310 runs
PopularPEM 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.
Hydrogen74 runs- Popular
PEM 20 MW Germany 2024
PEM water electrolyser, 20 MW, grounded on EU/IEA/IRENA/DOE 2024 techno-economics for Germany.
Hydrogen60 runs
All calculators
- Based on PNNL 2022 / Eos 2026
Zinc hybrid cathode long-duration battery storage, 4-12 h, levelised cost of storage
Aqueous zinc battery plant of the Eos Znyth type, 0.1 to 200 MWh and 4 to 12 h: LCOS in EUR/MWh discharged from PNNL-33283 costs and method with Eos efficiencies, battery-module replacements, energy discharged and charged, and an out-of-sourced-domain flag outside 1-10 MW and 4-10 h.
Energy mass balanceCosting+1Storage - Based on Keiner 2026 / PNNL 2024
Sodium-ion stationary battery storage (containerised): LCOS, round-trip efficiency and degradation
Grid-connected sodium-ion battery containers from 2 to 500 MWh: LCOS in EUR/MWh delivered after the PNNL 2024 method with Keiner et al. 2026 costs, round-trip efficiency, linear capacity fade to 80 % and service life, by reference case.
Energy mass balanceCosting+2Storage - Based on IRENA 2012 / IEA Task 33
Small-scale wood gasification CHP: LCOE with heat and biochar credits
Fixed-bed wood gasifier with gas engine, 80 kW to 5 MW of fuel: LCOE in EUR/MWh net of heat and biochar sales (IRENA 2012 method), net electricity, heat sold, overall efficiency, wood bought in t/yr and drying need, by SynCraft, Hargassner or measured reference case.
Energy mass balanceCostingBiomass
Open Jack163 - Based on IRENA 2022 / Palys 2018
Small modular green ammonia plant: flexible Haber-Bosch loop, cost excluding hydrogen
Flexible Haber-Bosch loop with N2 purification, H2 buffer and NH3 storage, 1 to 300 t/d: ammonia cost excluding hydrogen and total cost in EUR/t, annual output, electricity per tonne and H2 buffer, with the small-size scale penalty from Palys 2018 and IRENA 2022.
CostingEnergy mass balanceAmmonia - Based on PNNL 2022 / NREL
Pumped hydro energy storage (PSH) plant
Pumped storage hydropower sized by rated power, duration and net head: reservoir volume and flow from E = rho g H V eta, sourced round-trip cases, PNNL cycle-time limit, PNNL CAPEX build-up with size and head scaling, O&M and a pre-tax real LCOS in constant EUR 2021.
Energy mass balanceCosting+1Storage - Based on DEA 401.a 2025 / GCCSI 2025
Modular amine post-combustion CO2 capture unit
Amine capture on industrial flue gas (boiler, cement, incinerator): regeneration heat, electricity, amine make-up, scaled CAPEX and cost of CO2 captured in EUR/t, on the Danish Energy Agency 401.a datasheet, sized in t/d like the CO2 liquefaction calculator.
CostingEnergy mass balance+1Carbon captureOpen Jack637 - Based on Gøtske et al. 2023
Liquid air energy storage (LAES) plant levelized cost of storage
Liquid air energy storage plant: LCOS in EUR/MWh delivered from separate liquefier, turbine and tank costs (Gøtske et al. 2023 overnight literature cost, linear in capacity as in the source), round-trip efficiency from academic and vendor bases with optional waste heat, cycles capped by recharge time, and the gap to Carrington and Hunterston costs.
Energy mass balanceCosting+1Storage - Based on NASA KSC / DOE ST235
Liquid hydrogen storage tank with boil-off management
Vacuum-insulated liquid hydrogen tank, 10 to 50,000 m3: stored mass, boil-off rate scaled on measured NASA and Linde tanks, yearly losses, vessel CAPEX from the DOE 68 m3 anchor, and storage cost per kg delivered with the boil-off vented, reused or reliquefied.
CostingEnergy mass balanceHydrogen - Based on NREL 2025 / PNNL 2022
Stationary LFP lithium-ion battery storage (containerised BESS) levelized cost of storage
Grid-connected LFP battery containers, from a single 2 MWh container to 1,000 MWh: LCOS in EUR/MWh delivered from the NREL 2025 energy/power cost split, a Lazard 2025 small-system premium and the PNNL-33283 LCOS method, energy delivered and charged, round-trip efficiency by efficiency basis.
Energy mass balanceCosting+1Storage - Based on DEA 2025 / SINTEF 2025
Industrial electric boiler (electrode or resistive) - levelised cost of steam
Electrode or resistance boiler for saturated steam or hot water: heat, steam tonnage and electricity per year, installed CAPEX with grid connection on DEA 2025 or SINTEF 2025, and the levelised cost of heat in EUR/MWh_th against a gas boiler fuel + CO2 benchmark.
Energy mass balanceCosting+1Other - Based on DOE/EPRI 2013
Flywheel energy storage for frequency regulation: standby losses, cycling and cost per MW of reserve
Flywheel plant for frequency regulation: cost per MW of reserve and per MWh exchanged from the DOE/EPRI 2013 handbook (Table B-27) or Beacon Hazle costs, with standby losses drawn all year, round-trip losses, and a life set by 125,000 cycles or 20 years.
Energy mass balanceCosting+1StorageOpen Jack111 - Based on SINTEF / Roussanaly 2021
CO2 conditioning and liquefaction for ship transport (low or medium pressure) levelized cost
Captured CO2 compressed, dried and liquefied at 7 or 15 barg for ship transport: levelised liquefaction cost in EUR/t, specific electricity in kWh/t, yearly electricity, CAPEX scaled on the daily flow (Roussanaly et al. 2021), and buffer storage as a separate line.
Energy mass balanceCostingCarbon capture - Based on DEA 2026 / IPCC 2019
Biomass pyrolysis to biochar: cost per tonne of CO2 removed
Slow pyrolysis of wood chips, 300 to 5,000 kW of rated input, with the pyrolysis gas burnt for heat. Biochar, net CO2 removed (IPCC 2019 method) and the net cost per tonne removed after the heat credit, from DEA costs and BIOMACON datasheets.
CostingEnergy mass balance+1Biomass - Based on Gantenbein 2022 / DEA / Electrochaea
Biological methanation (archaea bioreactor, H2 + CO2 to CH4) levelized cost of synthetic methane
Ex-situ biological methanation at 63 C and 10 bar: H2 and CO2 (pure or raw biogas) to grid-grade CH4. H2 and CO2 in t/yr, own electricity per Nm3, heat at 60 C, CAPEX on the Gantenbein 0.63 law, cost in EUR/MWh HHV with and without H2.
Energy mass balanceCostingE-fuels - Based on IEA 2019 / IRENA 2022
Ammonia cracking to hydrogen: cracker and PSA cost of service
Fired catalytic ammonia cracker with PSA purification, 20 to 3,500 t/d of ammonia: cracking service cost in EUR/kg of hydrogen (ammonia excluded), hydrogen delivered, LHV efficiency, ammonia burned as fuel and CAPEX, on the IEA 2019 and IRENA 2022 reference cases.
CostingEnergy mass balanceHydrogen - Based on PNNL-33283 / ARENA
Advanced adiabatic compressed air energy storage (A-CAES): round-trip efficiency, duration and LCOS
Advanced adiabatic compressed air energy storage plant: LCOS in EUR/MWh delivered from a DOE/PNNL power block and a storage block calibrated on Hydrostor Silver City, scaled at 8 % per tenfold size (PNNL-33283), with literature round-trip efficiency, cycles capped by recharge time, and flags where the cost law is extrapolated.
Energy mass balanceCosting+1Storage 
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-fuels
alexi17PEM 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.
CostingHydrogenalexi74
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-fuelsalexi36H2 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 balanceCostingHydrogenalexi310- 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 
Biogas Upgrading & CO2 Separation (Biomethane + CO2-Rich Stream)
Calculator for biomethane production, CO2 separation (biogenic CO2 captured), methane slip, electricity use, CAPEX/OPEX, and levelized cost (EUR/tCO2 captured) for a biogas upgrading unit.
Equipment sizingCostingCarbon capturealexi122
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 balanceCostingHydrogenalexi137- 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