Compare Oil, Natural Gas, Coal and Renewable Energy Prices

Updated 5 November 2026 · Standard formula, shown below

Comparing oil, natural gas, coal and renewable energy prices fairly means putting them on a consistent basis and checking what each price includes. Use current, comparable data and convert units before drawing conclusions; a fuel’s market price is not automatically the cost of producing electricity from it.

What You’ll Need

Price data for each energy source, with the date, market or location, currency, and unit stated.
A calculator or spreadsheet for unit conversions and, if needed, currency or inflation adjustments.
A clear comparison goal: fuel commodity prices, delivered energy costs, or electricity generation costs.
For electricity comparisons, information about plant efficiency and any costs included in the quoted figures.

Step-by-Step

Decide what question you are answering. A comparison of commodity prices asks what a quantity of oil, gas, coal, or renewable electricity costs. A comparison of power-generation costs asks how much it costs to produce a unit of electricity. These are different questions. State your goal before collecting numbers so you do not compare a barrel of crude oil directly with a megawatt-hour of wind power.
Choose a specific market and date range. Prices differ by country, region, delivery point, contract, and date. Record whether a figure is a spot price, a futures price, a contract price, a wholesale electricity price, or a retail bill rate. Compare prices from the same period and, where possible, comparable locations. For volatile markets, use a stated period such as monthly averages rather than selecting one unusually high or low trading day.
Check exactly what each number represents. Oil data may refer to crude oil or a refined product; these are not interchangeable. Natural gas prices may be quoted at a trading hub or after delivery. Coal prices can vary with grade, moisture, sulfur content, and transport. Renewable prices might mean a power purchase agreement, wholesale electricity, or a modeled generation cost. Write down what is included, such as transport, handling, taxes, or delivery.
Put the prices in one currency. If sources use different currencies, convert them using an exchange rate appropriate to the price date. Keep the original value and rate in your notes. Avoid converting one figure using today’s exchange rate and another using a historical rate unless that difference is intentional. State whether values are nominal or inflation-adjusted.
Convert units to a common energy basis. A practical basis for comparing fuels is dollars per megawatt-hour of thermal energy ($/MWh thermal), also written as $/MWh_th. For each fuel, use its stated heating value and convert the quoted price to the cost of one MWh of energy. For example, if a price is quoted per million British thermal units, multiply by approximately 3.412 to express it per MWh_th, because 1 MWh is about 3.412 million Btu. If a source uses gigajoules, note that 1 MWh is 3.6 GJ. Confirm whether the fuel’s heating value is reported on a higher- or lower-heating-value basis; do not mix the two without adjusting.
Decide whether to compare fuel energy or electricity. A thermal-energy comparison does not account for how efficiently a power station turns fuel into electricity. To estimate fuel cost per MWh of electricity, divide the fuel cost per MWh_th by the plant’s electrical efficiency expressed as a decimal. For example, at 40% efficiency, divide by 0.40. This is only a fuel-cost estimate; it excludes plant construction, operations, maintenance, and other costs. Renewable sources such as wind and solar have no fuel purchase in this calculation, but their electricity cost is not therefore zero.
For a full generation-cost comparison, use a consistent cost measure. Levelized cost of electricity (LCOE) estimates the lifetime cost of a generating project per unit of electricity produced. Compare figures that use similar assumptions for financing, project life, capacity factor, location, and system boundaries. Check whether grid connection, storage, transmission, backup, decommissioning, and subsidies are included. Do not treat LCOE as a forecast of the market price of electricity or as a complete measure of grid-wide costs.
Show the calculation and assumptions. Keep a table with source, date, location, original unit, original price, conversion, final unit, and included costs. Round results only after calculations are complete, and use sensible precision rather than implying more certainty than the data supports. Add a short note explaining what the comparison includes and excludes.

Common Mistakes

Comparing unlike units: A price per barrel, per tonne, per MMBtu, and per MWh cannot be compared as written. Convert to a common energy unit first.
Mixing fuel and electricity prices: Fuel is an input to many power plants; electricity is an output. Account for conversion efficiency before comparing them.
Treating all fuels as identical: Heating value and quality differ. A coal price per tonne is especially difficult to interpret without a grade and energy-content specification.
Ignoring location and delivery: A price at a production site may exclude shipping and local delivery costs that another figure includes.
Assuming renewable electricity costs nothing: Wind and solar have no fuel cost, but construction, financing, operation, connection, and integration can still have costs.
Comparing different time periods or cost boundaries: A recent spot quote and a lifetime project estimate do not measure the same thing.

Tips

Label thermal energy as MWh_th and electricity as MWh_e whenever there is any chance of confusion.
Keep a link or citation for every data point, along with its publication date and unit definition.
Use a sensitivity range for uncertain assumptions such as plant efficiency, fuel quality, or exchange rates.
Separate private project costs from broader system costs. Storage and transmission may matter to a grid comparison but may not be included in a project’s headline generation cost.
Use consistent inflation treatment: either compare nominal prices for the same period or convert all figures to a stated real-price year.

Troubleshooting

The result seems implausibly large or small: Check whether you used MWh or kWh, and whether a quote is per thousand or million units. One MWh equals 1,000 kWh. Check the conversion direction and make sure the price is divided or multiplied by the unit conversion as required.

Two reputable sources disagree: Compare their dates, delivery points, product definitions, heating-value basis, and treatment of taxes or transport. They may both be correct for different markets or contracts. Do not average them until you understand the difference.

You cannot find a comparable renewable price: Identify whether the available number is a contract price, wholesale market price, or LCOE. If its meaning differs from the fossil-fuel figures, present it separately rather than forcing a misleading conversion.

Your electricity estimate differs from a published generation cost: A fuel-only calculation omits capital and operating costs, and the published figure may use different efficiency, financing, or system assumptions. Recheck the scope before comparing the results.

Frequently Asked Questions

What is the fairest unit for comparing energy prices?
For fuel energy, use a common unit such as currency per MWh_th, with heating-value definitions stated. For electricity, use currency per MWh_e and compare figures with matching cost boundaries.

Can I compare oil prices per barrel with natural gas prices per MMBtu?
Not directly. Convert both to a common energy basis using the oil’s or gas’s energy content, and identify the specific oil product and gas market.

Should I use spot prices or annual averages?
Choose based on the question. Spot prices describe a point in time; annual or monthly averages help compare periods. Use the same time basis for every source.

Does a lower LCOE mean a source is always cheaper for the grid?
No. LCOE is a project-level estimate under stated assumptions. It does not by itself capture every cost or value related to timing, transmission, storage, or grid reliability.

Are renewable energy prices always zero when there is no fuel bill?
No. A zero fuel cost is not a zero generation cost. Equipment, financing, maintenance, grid connection, and other expenses may still apply.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.