Cost of electricity by source

For the price of electricity, seeelectricity pricing.

Different methods ofelectricity generationcan incur a variety of different costs, which can be divided into three general categories: 1) wholesale costs, or all costs paid by utilities associated with acquiring and distributing electricity to consumers, 2) retail costs paid by consumers, and 3) external costs, orexternalities,imposed on society.

Wholesale costs include initialcapital,operations & maintenance (O&M), transmission, and costs of decommissioning. Depending on the local regulatory environment, some or all wholesale costs may be passed through to consumers. These are costs per unit of energy, typically represented as dollars/megawatt hour (wholesale). The calculations also assist governments in making decisions regardingenergy policy.

On average thelevelized cost of electricityfromutility scale solar powerandonshore wind poweris less than fromcoalandgas-fired power stations,but this varies a lot depending on location.

Cost metrics

Costs

Levelized cost:With increasingly widespread implementation of renewable energy sources, costs have declined, most notably for energy generated by solar panels.
Levelized cost of energy(LCOE) is a measure of the average net present cost of electricity generation for a generating plant over its lifetime.

Past costsof producing renewable energy declined significantly,with 62% of total renewable power generation added in 2020 having lower costs than the cheapest new fossil fuel option.

"Learning curves":Trend of costs and deployment over time, with steeper lines showing greater cost reductions as deployment progresses.With increased deployment, renewables benefit fromlearning curvesandeconomies of scale.

Levelized cost of electricity

Main article:Levelized cost of electricity

Thelevelized cost of electricity(LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold tobreak evenover the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental impacts, local availability, others), and is therefore controversial. Roughly calculated, LCOE is the net present value of all costs over the lifetime of the asset divided by an appropriately discounted total of the energy output from the asset over that lifetime.

Levelized cost of storage

The levelized cost of storage (LCOS) is analogous to LCOE, but applied to energy storage technologies such as batteries.Regardless of technology, however, storage is but a secondary source of electricity dependent on a primary source of generation. Thus, a true cost accounting demands that the costs of both primary and secondary sources be included when the cost of storage is compared to the cost of generating electricity in real time to meet demand.

A cost factor unique to storage are losses that occur due to inherent inefficiencies of storing electricity, as well as increased CO₂emissions if any component of the primary source is less than 100% carbon-free.In the U.S., a comprehensive 2015 study found that net system CO₂emissions resulting from storage operation are nontrivial when compared to the emissions from electricity generation [in real time to meet demand], ranging from 104 to 407 kg/MWh of delivered energy depending on location, storage operation mode, and assumptions regarding carbon intensity.

Levelized avoided cost of electricity

The metric levelized avoided cost of energy (LACE) addresses some of the shortcomings of LCOE by considering the economic value that the source provides to the grid. The economic value takes into account the dispatchability of a resource, as well as the existingenergy mixin a region.

In 2014, the USEnergy Information Administrationrecommendedthat levelized costs of non-dispatchablesources such as wind or solar be compared to the "levelized avoided cost of energy" (LACE) rather than to the LCOE of dispatchable sources such asfossil fuelsor geothermal. LACE is the avoided costs from other sources divided by the annual yearly output of the non-dispatchable source.The EIA hypothesized that fluctuating power sources might not avoid capital and maintenance costs of backup dispatchable sources. The ratio of LACE to LCOE is referred to as the value-cost ratio. When LACE (value) is greater than LCOE (cost), then value-cost ratio is greater than 1, and the project is considered economically feasible.

Value-adjusted levelized cost of electricity

The value-adjusted levelized cost of electricity (VALCOE) is a metric devised by theInternational Energy Agencywhich includes both the cost of the electricity and the value to the electricity system.For example, the same amount of electricity is more valuable at a time of peak demand. However VALCOE does not take into account future changes to the electricity system, for example the addition of much more solar power could reduce midday value but today's VALCOE does not take that into account.

Capture rate

Thecapture rateis the volume-weighted average market price (orcapture price)that a source receives divided by the time-weighted average price for electricity over a period.For example, a dammed hydro plant might only generate when prices are high and so have a capture rate of 200%, whereas a source that is not dispatchable, such as a wind farm without batteries, would typically have a capture rate under 100%.Typically the more of a single type of renewable that is built in a pricing area (such as Great Britain) the lower the capture rate will become for that type, for example if many wind farms generate a lot at the same time the price at that time will go down.There can be curtailment if grid connectivity is lacking across the pricing area – for example from wind power in Scotland to consumers in England – resulting in the capture rate not reflecting the true cost.

Cost factors

While calculating costs, several internal cost factors have to be considered.Note the use of "costs," which is not the actual selling price, since this can be affected by a variety of factors such as subsidies and taxes:

• Capital coststend to be low for gas and oilpower stations;moderate for onshore wind turbines and solar PV (photovoltaics); higher for coal plants and higher still forwaste-to-energy,waveandtidal,solar thermal,offshore wind andnuclear.
• Fuel costs – high for fossil fuel and biomass sources, low for nuclear, and zero for many renewables. Fuel costs can vary somewhat unpredictably over the life of the generating equipment, due to political and other factors.

To evaluate the total cost of production of electricity, the streams of costs are converted to anet present valueusing thetime value of money.These costs are all brought together usingdiscounted cash flow.

Capital costs

For power generation capacity capital costs are often expressed asovernight costper kilowatt. Estimated costs are:

Cost per kW

Type	USEIA	USNREL	$/MWh	CF
Coal power	$4,074	$3,075–5,542
Coal with 90%carbon capture	$6,495–6,625
Natural gas		$922–2,630
Combined-cycle	$1,062–1,201
Combined-cycle with 90% carbon capture	$2,736–2,845
Internal combustion engine	$2,018
Turbine, aeroderivative	$1,294
Turbine, industrial	$785
Nuclear	$6,695–7,547	$7,442–7,989	$81–82	94%
Wind power	$1,718	$1,462	$27–75	18–48%
Wind, offshore	$4,833–6,041	$3,285–5,908	$67–146	29–52%
Distributed generation(wind)	$1,731–2,079	$2,275–5,803	$32–219	11–52%
Solar thermal/concentrated	$7,895	$6,505	$76–97	49–63%
Solar photovoltaic	$1,327	$1,333–2,743	$31–146	12–30%
Solar PV withstorage	$1,748	$2,044	$53–81	20–31%
Battery storage	$1,316	$988–4,774		8–42%
Fuel cells	$6,639–7,224
Pumped-storage hydroelectricity		$1,999–5,505
Hydropower,conventional	$3,083	$2,574–16,283	$60–366	31–66%
Biomass	$4,524	$4,416	$144	64%
Geothermal power	$3,076	$6,753–46,223	$55–396	80–90%

Real life costs can diverge significantly from those estimates.Olkiluotoblock 3, which achieved first criticality in late 2021 had an overnight cost to the construction consortium (the utility paid a fixed price agreed to when the deal was signed of only 3.2 billion euros) of€8.5 billionand a net electricity capacity of 1.6 GW or€5310per kW of capacity.MeanwhileDarlington Nuclear Generating Stationin Canada had an overnight cost ofCA$5.117 billionfor a net electric capacity of 3512 MW orCA$1,457per kW of capacity.The oft cited figure ofCA$14.319 billion– which works out toCA$4,077per kW of capacity – includes interest (a particularly high cost in this case as the utility had to borrow at market rates and had to absorb the cost of delays in construction) and is thus not an "overnight cost". Furthermore, there is the issue of comparability of different sources of power, ascapacity factorscan be as low as 10–20% for some wind and solar applications reaching into the 50% range foroffshore windand finally above 90% for the most reliable nuclear power plants.The average capacity factor of all commercial nuclear power plants in the world in 2020 was 80.3% (83.1% the prior year) but this includes outdatedGeneration II nuclear power plantsand countries likeFrancewhich run their nuclear power plantsload followingwhich reduces the capacity factor.Peaking power plantshave particularly low capacity factors but make up for it by selling electricity at the highest possible price when supply does not meet demand otherwise.

The first German Offshore Wind ParkAlpha Ventus Offshore Wind Farmwith anameplate capacityof 60 MW cost€250 million(after an initial estimate of€190 million).In 2012, it produced 268 GWh of electricity, achieving a capacity factor of just over 50%.If the overnight cost is calculated for the nameplate capacity, it works out to€4167per kW whereas if one takes into account the capacity factor, the figure needs to be roughly doubled.

Geothermal poweris unique among renewables in that it usually has a low above-ground impact and is capable ofbaseload powergeneration as well ascombined heat and power.However, depending on the plant and conditions undergroundnaturally occurring radioactive materialssuch asradonmay be released into the air.This partially offsets relatively high costs per capacity which were cited asUS$200 millionfor the 45 MW first phase ofÞeistareykir Geothermal Power Stationand a total ofUS$330 millionfor the 90 MW combined two first phases. This gives a cost per kW of capacity ofUS$4,444if only the first phase is considered andUS$3,667if the cost estimates for both phases together hold.The source also calls this power plant uniquely cost effective for geothermal power and the uniquegeology of Icelandmakes the country one of the largest producers of geothermal power worldwide and by far the largest per capita or relative to all energy consumed.

Block 5 ofIrsching Power Stationin Southern Germany usesnatural gasas fuel in acombined cycleconverting 1750 megawatts of thermal energy to 847 net MW of usable electricity. It cost€450 millionto build.This works out to some€531per kW of capacity. However, due to the uneconomical prospect of operating it as a peaking power plant, the owners, soon after opening the plant in 2010, wanted to shut down the plant.

The LCOE of floating wind power increases with the distance from shore.

TheLieberose Photovoltaic Park– one of the largest in Germany – had a nameplate capacity at opening of 52.79 megawatt and cost some€160 millionto buildor€3031per kW. With a yearly output of some 52 GWh (equivalent to just over 5.9 MW) it has a capacity factor just over 11%. The€160 millionfigure was again cited when the solar park was sold in 2010.

The world's largest solar farm to date (2022) inRajasthan,India –Bhadla Solar Park– has a total nameplate capacity of 2255 MW and cost a total of 98.5 billionIndian rupeesto build.This works out to roughly 43681 rupees per kW.

As can be seen by these numbers, costs vary wildly even for the same source of electricity from place to place or time to time and depending on whether interest is included in total cost. Furthermore, capacity factors and the intermittency of certain power sources further complicate calculations. Another issue that is often omitted in discussions is the lifespan of various power plants – some of the oldest hydropower plants have existed for over a century, and nuclear power plants going on five or six decades of continuous operation are no rarity. However, many wind turbines of the first generation have already been torn down as they can no longer compete with more modern wind turbines and/or no longer fit into the current regulatory environment.Some of them were not even twenty-five years old. Solar panels exhibit a certain aging, which limits their useful lifetime, but real world data does not yet exist for the expected lifetime of the latest models.

Operations and maintenance (O&M) costs

O&M costs include marginal costs of fuel, maintenance, operation, waste storage, and decommissioning for an electricity generation facility. Fuel costs tend to be highest for oil fired generation, followed in order by coal, gas, biomass and uranium. Due to the highenergy densityof uranium (orMOX fuelin plants that use this alternative to uranium) and the comparatively low price on the worlduranium market(especially when measured in units of currency per unit of energy content), fuel costs only make up a fraction of the operating costs of nuclear power plants. In general, the cost balance between capital and running costs tilts in favor of lower operating expenses for renewables and nuclear and in the other direction for fossil fuels.

Assovereign debtin high income countries is usually to be had at lower interest rates than private loans, nuclear and renewable power become significantly cheaper – also compared to fossil alternatives – the bigger the involvement of state investment or state guarantees. In theGlobal South,where interest rates tend to be higher, the shorter construction period of small scale projects (particularly wind and solar) partially compensates for their increased capital cost. In terms ofimport substitution,solar can be particularly attractive in replacingbunker oilor diesel generators forrural electrificationas it needs no imported hydrocarbons and as it allows hydrocarbon resources (where available) to be exported instead.

Short-term fluctuations in fuel prices can have significant effects on the cost of energy generation in natural gas and oil fired power plants and to a lesser extent for coal fired power plants. As renewable energies need no fuel, their costs are independent of world markets for fuels once built. Coal-fired power plants are often supplied with locally or at least domestically available coal – this is especially true forlignitewhose lowgradeand highmoisturecontent make transporting it over long distances uneconomical – and are thus less subject to the influence of world markets. If there is acarbon taxor other forms ofCO₂-pricing,this can have a significant impact on the economic viability of fossil fueled power plants. Due to the ease of stockpiling uranium and the rarity of refueling (mostPressurized Water Reactorswill change about a quarter to a third of their fuel loading every one and a half to two years), short term fluctuations in world uranium prices are a risk absorbed by fuel suppliers, not power plant operators. However, long-term trends in uranium price can have an effect of a few tenths of a cent to a cent or two per kilowatt-hour on the final price of nuclear energy.

The biggest factor in the operating costs of both nuclear and renewable are local wages – in most cases those need to be paid regardless of whether the plant is operating at full capacity or putting out only a fraction of itsnameplate capacityand thus those plants are usually run to as high a fraction of their capacity as the market (negative prices) and weather (avoiding overheating rivers withcooling water,availability of sun or wind...) allow.However, in France the nuclear power plants which provide some 70% of electricity demand are runload followingto stabilize the grid. As a lot of home heating in France is supplied via electric means (heat pumpsandresistive heating), there is a notable seasonality to nuclear energy generation in France with planned outages usually scheduled for the lower demand summer period, which also coincides with school holidays in France. In Germany some two decades old and olderwind turbineswere shut down after no longer receivingrenewable energy subsidiesdue to a reported market-rate electricity price of some€0.03per kWh not coveringmarginal costsor only covering them as long as no major maintenance was needed.By contrast after being fullydepreciated,Germany's (then remaining) nuclear power plants were described in media reports throughout the 2010s and into the early 2020s as highly profitable for their operators even without direct government subsidy.

Market matching costs

Many scholars, such asPaul Joskow,have described limits to the "levelized cost of electricity" metric for comparing new generating sources. In particular, LCOE ignores time effects associated with matching production to demand. This happens at two levels:

• Dispatchability, the ability of a generating system to come online, go offline, or ramp up or down, quickly as demand swings.
• The extent to which the availability profile matches or conflicts with the market demand profile.

Ramp rates(how fast the power can be increased or decreased) may be quicker for more modern nuclear and theeconomics of nuclear power plantsdiffer. Nevertheless, capital intensive technologies such as wind, solar, and nuclear are economically disadvantaged unless generating at maximum availability since the LCOE is nearly all sunk-cost capital investment. Grids with very large amounts ofintermittentpower sources, such as wind and solar, may incur extra costs associated with needing to have storage or backup generation available.At the same time, intermittent sources can be even more competitive if they are available to produce when demand and prices are highest, such as solar during summertime mid-day peaks seen in hot countries whereair conditioningis a major consumer.

Another limitation of the LCOE metric is the influence ofenergy efficiencyandconservation(EEC). In the 2010s EEC caused the electricity demand of many countries, such as the US,to remain flat or decline.For solar systems installed at the point of end use, it may be more economical to invest in EEC first, then solar, or both at the same time.This results in a smaller required solar system than what would be needed without the EEC measures. However, designing a solar system on the basis of LCOE would cause the smaller system LCOE to increase, as the energy generation drops faster than the system cost.The whole of system life cycle cost should be considered, not just the LCOE of the energy source.LCOE is not as relevant to end-users than other financial considerations such as income, cashflow, mortgage, leases, rent, and electricity bills.Comparing solar investments in relation to these can make it easier for end-users to make a decision, or using cost-benefit calculations "and/or an asset'scapacity valueor contribution to peak on a system or circuit level ".

External costs of energy sources

See also:Environmental impact of the energy industryandEconomics of nuclear power plants

Typically pricing of electricity from various energy sources may not include allexternal costs– that is, the costs indirectly borne by society as a whole as a consequence of using that energy source.These may include enabling costs, environmental impacts, energy storage, recycling costs, or beyond-insurance accident effects.

Solar panel performance is usually guaranteed for 25 years and sometimes 30.According to a 2021Harvard Business Reviewstudy costs of recycling solar panels will reach $20–30 per panel in 2035, which would increase the LCOE fourfold for PV solar power but only if panels are replaced after 15 years rather than the expected 30 years. If panels are replaced early this presents a significant policy challenge because if the recycling is made legal duty of the manufacturers (asit already is in the EU) it will dramatically reduce profit margins on this already competitive market.A 2021 IEA study of repairing old panels to reuse rather than recycle them concluded that the financial viability depends on country specific factors such as grid tariffs, but that reuse is only likely for utility solar, as rooftop owners will want to make best use of space with more efficient new panels.

An EU funded research study known as ExternE, orExternalitiesof Energy, undertaken over the period of 1995 to 2005 found that the cost of producing electricity from coal or oil would double over its present value, and the cost of electricity production from gas would increase by 30% if external costs such as damage to the environment and to human health, from theparticulate matter,nitrogen oxides,chromium VI,river wateralkalinity,mercury poisoningandarsenicemissions produced by these sources, were taken into account. It was estimated in the study that these external, downstream, fossil fuel costs amount up to 1–2% of theEU's entire Gross Domestic Product (GDP),and this was before the external cost of global warming from these sources was even included.Coal has the highest external cost in the EU, and global warming is the largest part of that cost.Sustainable energyavoids or greatly reduces future costs to society, such asrespiratory illnesses.In 2022 the EU created agreen taxonomyto indicate which energy investments reduce such external costs.

A means to address a part of the external costs of fossil fuel generation iscarbon pricing— the method most favored by economists for reducing global-warming emissions.Carbon pricing charges those who emit carbon dioxide for their emissions. That charge, called a "carbon price", is the amount that must be paid for the right to emit one tonne of carbon dioxide into the atmosphere. Carbon pricing usually takes the form of acarbon taxor a requirement to purchase permits to emit (also called "allowances" ).

Depending on the assumptions of possible accidents and their probabilities external costs for nuclear power vary significantly and can reach between 0.2 and 200 ct/kWh.Furthermore, nuclear power is working under an insurance framework that limits or structures accident liabilities in accordance with theParis convention on nuclear third-party liability,the Brussels supplementary convention, and theVienna convention on civil liability for nuclear damageand in the U.S. thePrice-Anderson Act.It is often argued that this potential shortfall in liability represents an external cost not included in the cost of nuclear electricity; but the cost is small, amounting to about 0.1% of the levelized cost of electricity, according to a 2008 study.

These beyond-insurance costs for worst-case scenarios are not unique to nuclear power, ashydroelectric powerplants are similarly not fully insured against catastrophic events like a largedam failure.As private insurers base dam insurance premiums on limited scenarios, major disaster insurance in this sector is likewise provided by the state.

Because externalities are diffuse in their effect, external costs cannot be measured directly, but must be estimated.

International trade

Different countries charge generating companies differently for the negative externalities (such as pollution) that they create. To avoid unfair competition from imports of dirty electricity a tariff may be applied. For example, the UK and the EU may include electricity in theirCarbon Border Adjustment Mechanisms.Alternatively theemissions tradingsystems (ETS) of the importing and exporting countries may be linked,or the generators in one country may be subject to the ETS of another country (for example Northern İreland generators are in theEU ETS).

Additional cost factors

Calculations often do not include wider system costs associated with each type of plant, such as long-distance transmission connections to grids, or balancing and reserve costs. Calculations do not necessarily include externalities such as health damage by coal plants, nor the effect of greenhouse emissions on theclimate change,ocean acidificationandeutrophication,ocean currentshifts. Decommissioning costs of power plants are usually not included (nuclear power plants in the United States is an exception, because the cost of decommissioning is included in the price of electricity per theNuclear Waste Policy Act), is therefore notfull cost accounting.These types of items can be explicitly added as necessary depending on the purpose of the calculation.

Other non-financial factors may include:

• Comparisons of life-cycle greenhouse gas emissionsshow coal, for instance, to be radically higher in terms of GHGs than any alternative.
• Surface power densitymeasures power per unit surface area using given technology, and can vary by several orders of magnitude between high- and low-density sources. Surface power density is a significant limiting factor in countries with highpopulation density.
• Impacts on wildlife include an estimated 888,000 bats killed annually by collision with U.S. wind turbines.Millions of birds are estimated to be killed or electrocuted each year by collision with high-voltage power lines and pylons,and millions more by fossil fuel power plants.
• Otherenvironmental concerns with electricity generationincludeacid rain,ocean acidificationand effect of coal extraction on watersheds.
• Various human health concerns with electricity generation, includingasthmaandsmog,now dominate decisions in developed nations that incur health care costs publicly.A 2021 study estimated the health costs of coal power at hundreds of billions of dollars for the rest of the decade.

Global studies

Levelized cost of energy based on different studies. Source: IRENA 2020 for renewables, Lazard for the price of electricity from nuclear and coal, IAEA for nuclear capacity and Global Energy Monitor for coal capacity.

Global levelized cost of generation (US$ per MWh)

	IPCC2014 (at 5%discount rate)	IRENA2020	Lazard2023	NEA2020 (at 7%discount rate)	BNEF 2021
PV (utility, fixed-axis)	110	68	24–96	56	39
PV (utility, tracking)	-	-	-	-	47
PV (residential)	150	164	117–282	126	-
Solar (thermal)	150	182	-	121	-
Wind, onshore	59	53	24–75	50	41
Wind, offshore	120	115	72–140	88	79
Nuclear new (existing)	65	-	141–221* (31)	69 (32)	-
Hydro	22	47	-	68	-
Geothermal	60	73	61-102	99	-
Coal (CC)	61	-	68–166	88 (110)	-
Gas CC(Peak)	71	-	115–221	71	-

*LCOE estimates for nuclear power from Lazard are "based on the then-estimated costs of theVogtle Plantand US-focused ".

Bank of America (2023)

In 2023, Bank of America conducted a LCOE study in which it postulated that existing LCOE estimates for renewables do not account for fossil fuel or battery backup and thereforelevelized full system cost of electricity(LFSCOE) would be a more reasonable metric to compare sources in terms of providing 24/7 consumer electricity.

	LCOE	LFSCOE (Texas, US)	LFSCOE (Germany, EU)
Nuclear	82	122	106
Wind	40	291	504
Solar	36	413	1548
Biomass	95	117	104
Coal	76	90	78
Gas	38	40	35

BNEF (2021)

In March 2021, Bloomberg New Energy Finance found that "renewables are the cheapest power option for 71% of global GDP and 85% of global power generation. It is now cheaper to build a new solar or wind farm to meet rising electricity demand or replace a retiring generator, than it is to build a new fossil fuel-fired power plant.... On a cost basis, wind and solar is the best economic choice in markets where firm generation resources exist and demand is growing."They further reported "the levelized cost of energy from lithium-ion battery storage systems is competitive with many peak-demand generators."BNEF does not disclose the detailed methodology and LCOE calculation assumptions, however, apart from declaring it is "derived from selected public sources".Costs of gas peakers are substantial, and include both the cost of fuel and external costs of its combustion. Costs of its combustion include emission of greenhouse gases carbon monoxide and dioxide, as well as nitrogen oxides (NO_x), which damage the human respiratory system and contribute to acid rain.

IEA & OECD NEA (2020)

In December 2020,IEAandOECDNEApublished a jointProjected Costs of Generating Electricitystudy which looks at a very broad range of electricity generating technologies based on 243 power plants in 24 countries. The primary finding was that "low-carbon generation is overall becoming increasingly cost competitive" and "new nuclear power will remain the dispatchable low-carbon technology with the lowest expected costs in 2025". The report calculated LCOE with assumed 7% discount rate and adjusted for systemic costs of generation.The report also contains a modeling utility that produces LCOE estimates based on user-selected parameters such as discount rate, carbon price, heat price, coal price and gas price.The report's main conclusions:

• LCOE of specific energy sources significantly differs between countries due to their geographic, political and regulatory situation;
• low-carbon energy sources cannot be considered in separation, as they operate in "complex interactions" with each other to ensure reliable supply at all times; IEA analysis captures these interactions in value-adjusted LCOE or VALCOE;
• cost of renewable energy sources significantly decreased and are competitive (in LCOE terms) with dispatchable fossil fuel generation;
• cost of extension of operations of existing nuclear power plants (LTO, long-term operations) has the lowest LCOE of low-carbon energy sources;

Lazard (2020)

In October 2020, the financial firmLazardcompared renewable and conventional sources of energy, including comparison between existing and new generation (see table). Lazard study assumes "60% debt at 8% interest rate and 40% equity at 12% cost" for its LCOE calculation but did not disclose their methodology or project portfolio used to calculate prices.In the 2023 study Lazard explained their LCOE estimates for nuclear power are "based on the then-estimated costs of theVogtle Plantand US-focused ".

IPCC (2014)

IPCC Fifth Assessment Reportcontains LCOE calculationsfor broad range of energy sources in the following four scenarios:

• 10%WACC,high full load hours (FLH), no carbon tax
• 5%WACC,high FLH, no carbon tax — scenario presented in the above table
• 10%WACC,low FLH, no carbon tax
• 10%WACC,high FLH, $100/tCO2eqcarbon tax

Regional studies

Australia

BNEFestimated the following costs for electricity generation in Australia:

Australia LCoE 2020

Source	Solar	Wind onshore	GasCC	Wind plus storage	Solar plus storage	Storage (4hr)	Gas peaker
Mean $US/MWh	47	58	81	87	118	156	228

Europe

It can be seen from the following table that the cost of renewable energy, particularly photovoltaics, is falling very rapidly. As of 2017, the cost of electricity generation from photovoltaics, for example, has fallen by almost 75% within 7 years.

Electricity production costs of new power plants in €/MWh

Energy Source	Publication 2009	Publication 2011	Study 2012	Various individual data (as of 2012)	Study 2013	Study 2015	Study 2018	Study 2021
Nuclear	50	60–100	–	70–90;70–100;105	–	36–84	–	–
Lignite	46–65	45–100	–	–	38–53	29–84	45.9–79.8	103.8–153.4
Hard Coal	49–68	45–100	–	–	63–80	40–116	62.7–98.6	110.3–200.4
Natural Gas (CCGT)	57–67	40–75	–	93	75–98	53–168	77.8–99.6	77.9–130.6
Hydro	–	–	–	–	–	22–108	–	–
Wind, onshore	93	50–130	65–81	60.35–111;118	45–107	29–114	39.9–82.3	39.4–82.9
Wind, offshore	–	120–180	112–183	142–150	119–194	67–169	74.9–137.9	72.3–121.3
Biogas	–	–	–	126	135–215	–	101.4–147.4	72.2–172.6
Small-scale PV (Germany)	–	–	137–203	–	98–142	–	72.3–115.4	58.1–80.4
Large-Scale PV	32	–	107–167	100;184	79–116	35–180	37.1–84.6	31.2–57

In the United Kingdom, a feed-in tariff of £92.50/MWh at 2012 prices (currently the equivalent of €131/MWh)plus inflation compensation was set in 2013 for the new nuclear power plant to be built at Hinkley Point C, with a term of 35 years. At that time, this was below the feed-in tariff for large photovoltaic and offshore wind plants and above onshore wind plants.

In Germany, the bidding processes that have been carried out since 2017 have led to significant cost reductions. In one bid for offshore wind farms, at least one bidder dispensed entirely with public subsidies and was prepared to finance the project through the market alone. The highest subsidy price that was still awarded was 6.00 ct/kWh.In a bid for onshore wind farm projects, an average payment of 5.71 ct/kWh was achieved, and 4.29 ct/kWh in a second bidding round.

In 2019, there were bids for new offshore wind farms in the United Kingdom, with costs as low as 3.96 pence per kWh (4.47 ct).

In the same year, there were bids in Portugal for photovoltaic plants, where the price for the cheapest project is 1.476 ct/kWh.

Britain

As of 2022,gas is the largest source ofelectricityat 40%:itscostvaries and being high carbon it causesclimate change.So to reduce the share of gas the government annually auctionscontracts for differenceto build low-carbon generation capacity, mainly offshore wind.Before 2022 these generators had always received payments from electricity suppliers, but that year they started making payments.In other wordsrenewablesbecame subsidy free,partly due to the fall in cost of offshore wind.Instead of gasstill dark weekscan besupplied by Norwegian hydropoweror by nuclear. As many of Britain's existing nuclear reactors are due to retire soon the government hopes that cost effectivesmall modular reactorscan be developed.

France

TheInternational Energy AgencyandEDFhave estimated the following costs. For nuclear power, they include the costs due to new safety investments to upgrade the French nuclear plant after theFukushima Daiichi nuclear disaster;the cost for those investments is estimated at €4/MWh. Concerning solar power, the estimate of €293/MWh is for a large plant capable of producing in the range of 50–100 GWh/year located in a favorable location (such as in Southern Europe). For a small household plant that can produce around 3 MWh/year, the cost is between 400 and €700/MWh, depending on location. Solar power was by far the most expensive renewable source of electricity among the technologies studied, although increasing efficiency and longer lifespan of photovoltaic panels together with reduced production costs have made this source of energy more competitive since 2011. By 2017, the cost of photovoltaic solar power had decreased to less than €50/MWh.

French LCOE in €/MWh (2017)

Technology	Cost in 2017
Hydro power
Nuclear (with state-covered insurance costs)	50
Nuclear EPR	100
Natural gas turbines without CO2capture
Onshore wind	60
Solar farms	43.24

Germany

TheFraunhofer Institute for Solar Energy Systemspublishes studies comparing the cost of different styles of energy production. The values for PV installations are based on the average cost between Northern and Southern Germany. The reports differentiate between the two and gives more details.

Levelized cost of electricity of energy technologies (€/MWh)

	2012	2013	2018	2021
PV rooftop (small)	170	120	93.85	84.1
PV rooftop (large)	-	-	-	72.1
PV ground (utility)	137	97.5	52.4	44.1
Wind, onshore	73	76	61.1	61.15
Wind, offshore	147.5	156.5	106.4	96.8
Biogas	-	120	124.4	128.55
Solid Biomass	-	-	-	112.75
Lignite	-	45.5	62.85	128.6
Hard Coal	-	71.5	80.65	155.35
CCGT	-	86.5	88.7	104,25
Gas Turbine	-	-	164.85	202.1

The LCOE for PV battery systems refers to the total amount of energy produced by the PV system minus storage losses. The storage losses are calculated based on the capacity of the battery storage, the assumed number ofcyclesand the efficiency of the battery. The results include differences in PV costs, battery costs (500 to 1200 EUR/kWh), and varyingsolar irradiation.For larger rooftop PV systems with battery storage, the battery costs between 600 and 1000 EUR/kWh. For ground-mounted PV with battery storage systems, investment costs for battery storage of 500 to 700 EUR/kWh were assumed. The prices for smaller systems are in part lower, as these are standardized products, whereas larger battery systems tend to be individualized projects that additionally incur costs for project development, project management, and infrastructure. The range of investment costs is smaller for the larger sizes, as there is more competitive pressure.

Levelized cost of electricity of PV with battery storage (€/MWh)

	2021
PV rooftop (small, battery 1:1)	140.5
PV rooftop (large, battery 2:1)	104.9
PV ground (utility, battery 3:2)	75.8

Middle East

The capital investment costs, fixed and variable costs, and the average capacity factor of utility-scale wind and photovoltaic electricity supplies from 2000 to 2018 have been obtained using overall variable renewable electricity production of the countries in the Middle East and 81 examined projects.

Average capacity factor and LCOE of wind and PV electricity resources in the Middle East

Year	Capacity factor		LCOE ($/MWh)
	Wind	Photovoltaic	Wind	Photovoltaic
2000	0.19	0.17	-	-
2001	-	0.17	-	-
2002	0.21	0.21	-	-
2003	-	0.17	-	-
2004	0.23	0.16	-	-
2005	0.23	0.19	-	-
2006	0.20	0.15	-	-
2007	0.17	0.21	-	-
2008	0.25	0.19	-	-
2009	0.18	0.16	-	-
2010	0.26	0.20	107.8	-
2011	0.31	0.17	76.2	-
2012	0.29	0.17	72.7	-
2013	0.28	0.20	72.5	212.7
2014	0.29	0.20	66.3	190.5
2015	0.29	0.19	55.4	147.2
2016	0.34	0.20	52.2	110.7
2017	0.34	0.21	51.5	94.2
2018	0.37	0.23	42.5	85.8
2019	-	0.23	-	50.1

Turkey

As of March 2021for projects starting generatingelectricity in Turkeyfromrenewable energy in Turkeyin Julyfeed-in-tariffsinliraper kWh are: wind and solar 0.32, hydro 0.4, geothermal 0.54, and various rates for different types of biomass: for all these there is also a bonus of 0.08 per kWh if local components are used.Tariffs will apply for 10 years and the local bonus for 5 years.Rates are determined by the presidency,and the scheme replaces the previous USD-denominated feed-in-tariffs for renewable energy.

Japan

A 2010 study by the Japanese government (pre-Fukushima disaster), called the Energy White Paper,concluded the cost for kilowatt hour was ¥49 for solar, ¥10 to ¥14 for wind, and ¥5 or ¥6 for nuclear power.

Masayoshi Son,an advocate forrenewable energy,however, has pointed out that the government estimates for nuclear power did not include the costs for reprocessing the fuel or disaster insurance liability. Son estimated that if these costs were included, the cost of nuclear power was about the same as wind power.

More recently, the cost of solar in Japan has decreased to between ¥13.1/kWh to ¥21.3/kWh (on average, ¥15.3/kWh, or $0.142/kWh).

The cost of a solar PV module make up the largest part of the total investment costs. As per the recent analysis of Solar Power Generation Costs in Japan 2021, module unit prices fell sharply. In 2018, the average price was close to 60,000 yen/kW, but by 2021 it is estimated at 30,000 yen/kW, so cost is reduced by almost half.

United States

Energy Information Administration (2020)

Since 2010, the US Energy Information Administration (EIA) has published theAnnual Energy Outlook(AEO), with yearly LCOE projections for future utility-scale facilities to be commissioned in about five years' time.

The following data are from the Energy Information Administration's (EIA) Annual Energy Outlook released in 2020 (AEO2020). They are in dollars per megawatt-hour (2019 USD/MWh). These figures are estimates for plants going into service in 2025, exclusive of tax credits, subsidies, or other incentives.The LCOE below is calculated based on a 30-year recovery period using a real after tax weighted average cost of capital (WACC) of 6.1%. For carbon intensive technologies 3 percentage points are added to the WACC. (This is approximately equivalent to a fee of $15 per metric ton of carbon dioxide CO₂.) Federal tax credits and various state and local incentive programs would be expected to reduce some of these LCOE values. For example, EIA expects the federal investment tax credit program to reduce the capacity weighted average LCOE of solar PV built in 2025 by an additional $2.41, to $30.39.

The electricity sources which had the most decrease in estimated costs over the period 2010 to 2019 were solar photovoltaic (down 88%), onshore wind (down 71%) and advanced natural gas combined cycle (down 49%).

For utility-scale generation put into service in 2040, the EIA estimated in 2015 that there would be further reductions in the constant-dollar cost of concentrated solar power (CSP) (down 18%), solar photovoltaic (down 15%), offshore wind (down 11%), and advanced nuclear (down 7%). The cost of onshore wind was expected to rise slightly (up 2%) by 2040, while natural gas combined cycle electricity was expected to increase 9% to 10% over the period.

Historical summary of EIA's LCOE projections (2010–2020)

Estimate in $/MWh			Coal convent'l	Nat. gas combined cycle		Nuclear advanced	Wind		Solar
of year	ref	for year		convent'l	advanced		onshore	offshore	PV	CSP
2010		2016	100.4	83.1	79.3	119.0	149.3	191.1	396.1	256.6
2011		2016	95.1	65.1	62.2	114.0	96.1	243.7	211.0	312.2
2012		2017	97.7	66.1	63.1	111.4	96.0	N/A	152.4	242.0
2013		2018	100.1	67.1	65.6	108.4	86.6	221.5	144.3	261.5
2014		2019	95.6	66.3	64.4	96.1	80.3	204.1	130.0	243.1
2015		2020	95.1	75.2	72.6	95.2	73.6	196.9	125.3	239.7
2016		2022	NB	58.1	57.2	102.8	64.5	158.1	84.7	235.9
2017		2022	NB	58.6	53.8	96.2	55.8	NB	73.7	NB
2018		2022	NB	48.3	48.1	90.1	48.0	124.6	59.1	NB
2019		2023	NB	40.8	40.2	NB	42.8	117.9	48.8	NB
2020		2025	NB	36.61	36.61	NB	34.10	115.04	32.80	NA
Nominal change 2010–2020			NB	−56%	−54%	NB	−77%	-40%	−92%	NB

Note:Projected LCOE are adjusted for inflation and calculated onconstant dollarsbased on two years prior to the release year of the estimate.
Estimates given without any subsidies. Transmission cost for non-dispatchable sources are on average much higher. NB = "Not built" (No capacity additions are expected.)

See also

• Electricity pricing
• Life-cycle greenhouse gas emissions of energy sources
• Distributed generation
• Economics of nuclear power plants
• Demand response
• Variable renewable energy
• Levelized cost of water
• National Grid Reserve Service
• Nuclear power in France
• List of thermal power station failures
• Calculating the cost of the UK Transmission network:Estimating cost per kWh of transmission
• List of countries by renewable electricity production
• List of U.S. states by renewable electricity production
• Environmental impact of electricity generation
• Grid parity

Further reading

• Machol, Ben; Rizk, Sarah (February 2013). "Economic value of U.S. fossil fuel electricity health impacts".Environment International.52:75–80.doi:10.1016/j.envint.2012.03.003.PMID23246069.
• Lazard's Levelized Cost of Energy Analysis – Version 14.0Archived28 January 2021 at theWayback Machine(Oct. 2020)