alexi
CreatorMember since December 2024
I do low-carbon energy stuff for 10 years & build things I wish existed.
- Calculators
- 24
- Total runs
- 789
- Likes
- 6
- Forks
- 35
Published calculators24
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Biogas Feedstock Mix & BMP Potential (CH4/CO2/Digestate)
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.
alexi
H2 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).
alexi
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.
alexi
Large compressed H2 Storage
Screens compressed hydrogen storage volume and total cost impacts alongside electrolyser electricity use and levelized cost of hydrogen (LCOH).
alexi
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.
alexi
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.
alexi
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.
alexi
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.
alexi
Biomethane-to-BioCNG Station
Pre-feasibility sizing and cost model for a biomethane-to-BioCNG (bioGNC) refuelling station: compressor flow and power, storage check, annual energy, CAPEX/OPEX and levelized distribution cost (EUR/kg).
alexi
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.
alexi
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.
alexi
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).
alexi
Methanol-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.
alexi
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).
alexi
Anaerobic Digestion (Biogas) Plant
Screening-stage sizing, levelized cost, and operational GHG intensity for an anaerobic digestion biogas unit (agricultural effluents/CIVE/bio-waste).
alexi
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.
alexi
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.
alexi
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.
alexi
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.
alexi
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.
alexi
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.
alexi
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.
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.
alexi
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.