LCOE Comparison Calculator
Free Lcoecomparison Calculator for env impact economics. Enter variables to compute results with formulas and detailed steps.
Formula
LCOE = (Capital x CRF + Annual O&M) / Annual Generation
LCOE annualizes capital cost using the Capital Recovery Factor, adds annual O&M, and divides by annual generation in MWh.
Worked Examples
Example 1: Solar Farm LCOE
Problem: Capital: $1.2M. O&M: $15,000/yr. Generation: 2,500 MWh/yr. Discount: 6%. Life: 25 yr.
Solution: CRF = 0.078227\nAnnualized Capital = $93,872/yr\nLCOE = ($93,872+$15,000)/2,500 = $43.55/MWh
Result: LCOE: $43.55/MWh (4.36 c/kWh)
Example 2: Wind Project
Problem: Capital: $3.5M. O&M: $75,000/yr. Generation: 8,000 MWh/yr. Discount: 7%. Life: 20 yr.
Solution: CRF = 0.094393\nAnnualized = $330,376/yr\nLCOE = $50.67/MWh
Result: LCOE: $50.67/MWh
Frequently Asked Questions
How is LCOE calculated using the capital recovery factor?
LCOE is calculated by first determining the Capital Recovery Factor (CRF), which converts a lump-sum capital cost into equivalent annual payments. The CRF formula is CRF = r(1+r)^n / ((1+r)^n - 1), where r is the discount rate and n is the plant lifetime. The annualized capital cost equals total capital times CRF. LCOE then equals annualized capital plus annual operating costs divided by annual electricity generation.
What are typical LCOE values for different energy sources?
Utility-scale solar PV has an LCOE of $30-50/MWh, onshore wind $25-50/MWh, offshore wind $55-100/MWh. Natural gas combined cycle plants range from $40-75/MWh, coal $65-150/MWh, and nuclear $100-180/MWh for new builds. These values vary significantly by region, resource availability, financing conditions, and regulatory environment. Renewable costs have fallen dramatically over the past decade.
Why does the discount rate matter in LCOE calculations?
The discount rate profoundly affects LCOE, especially for capital-intensive technologies like renewables and nuclear. A higher discount rate increases annualized capital cost, raising LCOE for technologies with high upfront costs. For solar and wind, which have high capital but near-zero fuel costs, LCOE is very sensitive to discount rate changes. A 2% increase can raise renewable LCOE by 15-25%.
What costs are included in capital cost for LCOE?
Capital costs include equipment procurement (turbines, panels, generators), engineering and design, construction labor and materials, land acquisition, grid connection infrastructure, permitting, and financing costs during construction. For renewable projects, they also include inverters, mounting structures, and access roads. These are typically expressed as total overnight cost or installed cost per kilowatt.
What is the difference between LCOE and electricity price?
LCOE represents the minimum average price for a project to break even over its lifetime. Market electricity price is determined by supply and demand dynamics, grid conditions, time of day, and regulation. Market prices can be above or below LCOE. LCOE also does not capture system integration costs like grid reinforcement, backup generation, or storage needed for intermittent renewables.
How does capacity factor affect LCOE?
Capacity factor directly impacts LCOE through the annual generation denominator. Higher capacity factors mean more electricity from the same capital, reducing cost per unit. Solar achieves 15-25%, onshore wind 25-45%, offshore wind 35-55%, gas 40-85%, nuclear 85-95%. A wind farm with 40% capacity factor has roughly half the LCOE of an identical installation at a 20% capacity factor site.