How Much is 1 MW of Electricity Worth?

As an expert in energy economics and investments, the question I get asked most often is: "How much is 1 megawatt of electricity really worth?"

It‘s a great question, and the answer is: around $300,000 per year at current wholesale electricity prices.

Now let me walk through the details so you really understand the value of 1 MW.

What is 1 Megawatt?

I‘m sure you already know, but as a quick refresher:

• 1 MW is 1,000 kilowatts or 1,000,000 watts of power
• It measures the rate of electricity generation, transmission, or usage
• 1 MW supplies enough electricity for around 1,000 average homes

So it‘s a substantial amount of power – equivalent to a large wind turbine or enough for an entire factory.

1 MW Generation Capacity

From a generation perspective, different energy sources can produce different amounts of electricity from 1 MW of capacity each year. This is due to something called capacity factor.

Capacity factor measures the average output of a power plant compared to its maximum possible output. Here are typical capacity factors:

• Coal and nuclear plants: 90% capacity factor
• Wind turbines: 35% capacity factor
• Solar photovoltaics: 25% capacity factor

With a 90% capacity factor, 1 MW of coal capacity will generate around 7,900 MWh per year (1 MW x 9,000 hours x 90% output).

But with a 25% capacity factor, 1 MW of solar panels will only produce around 2,200 MWh annually.

So 1 MW of coal provides a lot more electricity than 1 MW of solar over a year. This is an important consideration when evaluating energy sources.

Wholesale Electricity Prices

Now, how much does 1 MWh of electricity sell for?

Utilities and companies buy wholesale power at an average of around $30-50 per MWh across most major US markets right now. This can vary seasonally and by geographic region.

California has high prices around $100/MWh, while the Midwest is lower at around $30/MWh due to abundant power supplies.

For this analysis, let‘s use $50 per MWh to estimate the wholesale value of electricity.

Value of 1 MW Coal Plant

Okay, based on those capacity and pricing factors, let‘s value 1 MW of coal capacity:

• 1 MW capacity x 90% capacity factor = 7,900 MWh annual generation
• At $50 per MWh wholesale price = $395,000 total annual revenue

So 1 MW of coal power sold at today‘s prices earns around $395,000 per year. Not bad!

Coal remains profitable because it runs consistently year-round to produce a lot of salable MWhs from each MW of capacity.

Value of 1 MW Wind Farm

Now let‘s look at 1 MW of wind capacity:

• 1 MW capacity x 35% capacity factor = 3,100 MWh annual generation
• 3,100 MWh x $50/MWh price = $155,000 annual revenue

So at current wholesale rates, a 1 MW wind turbine can earn around $155,000 per year.

The lower capacity factor makes it less profitable per MW than baseload coal plants. But the fuel is free and there are zero emissions.

Value of 1 MW Solar Plant

Solar PV with a 25% capacity factor would generate around 2,200 MWh annually from 1 MW of capacity:

• 1 MW x 25% capacity factor = 2,200 MWh
• 2,200 MWh x $50/MWh = $110,000 revenue

So a 1 MW solar array could earn about $110,000 per year at wholesale electricity rates. Pretty good for just harnessing free sunlight!

PV panels have a lower capacity factor than wind since they only generate when the sun is shining. But the technology keeps getting more efficient.

Capacity Factors are Key

As you can see from these examples, the capacity factor – the ratio of average actual generation vs maximum possible output – has a huge impact on the annual revenue from 1 MW of capacity.

This factor must be carefully considered when comparing the economics of different electricity sources.

Other Factors Impacting 1 MW Value

In addition to capacity factors, several other factors impact the value of 1 MW of generation capacity:

Location – Electricity prices vary across geographic markets. 1 MW built in high-price California earns a lot more than 1 MW in low-priced Midwest markets.

Time – Wholesale power prices fluctuate hourly. 1 MW earns more during peak afternoon hours than late at night when demand is lower.

Incentives – Government supports like tax credits can boost revenue per MWh generated from renewables, increasing their 1 MW value.

Contracts – Long term power purchase agreements provide more stable revenue than selling into volatile spot electricity markets.

Considering these factors, the value of 1 MW of capacity could range from $100,000 up to $600,000+ per year in different scenarios.

But roughly speaking, at average US wholesale rates of around $50/MWh, 1 MW generates $300,000 annually for wind and solar, and $400,000+ for nuclear/coal.

1 MW Usage Perspective

Now let‘s shift perspectives and look at 1 MW from the electricity usage side.

1 MW represents 1 MWh of usage per hour. The average home uses about 1 MWh per month.

So 1 MW of power consumption would service the instantaneous demand of around 1,000 homes.

Large industrial facilities can easily use MW-rate amounts for manufacturing processes, data centers, etc. 1 MW consumed for one hour could power an entire factory or office complex.

These large users are willing to pay significant premiums for that much instant power delivery. So 1 MW is highly valuable for them.

Construction Costs per 1 MW

In addition to operating revenue, we can value 1 MW based on what it costs to build:

• Coal power plant – $3,500 per kW, so $3.5 million for a 1 MW plant.

• Gas-fired plant – $1,000 per kW, $1 million for 1 MW.

• Onshore wind farm – $1,300 per kW, so $1.3 million for a 1 MW turbine.

• Solar photovoltaic plant – $1,000 per kW, $1 million for 1 MW array.

And there are additional costs for permitting, site acquisition, grid interconnection and other overheads. So the total installed cost per MW is often 30-50% more than just raw materials and construction costs.

This demonstrates the significant upfront capital investment required to develop 1 MW of generation capacity – often millions per MW across all types of power technologies.

Land Required per 1 MW

In terms of physical space requirements:

• Coal plants need about 3-5 acres of land per 1 MW
• Gas plants need 1-2 acres per 1 MW
• Solar farms need around 8 acres per 1 MW
• Wind farms need 30-50 acres per 1 MW of capacity

So you can see that while fossil fuels are quite compact, renewable energy needs a lot of acreage per 1 MW to capture diffuse sunlight and wind.

This demonstrates the substantial real estate required to scale up solar, wind, and other renewables. The land itself takes on value to support clean power development.

Carbon Emissions Offset Per 1 MW

Here‘s an environmental perspective on the value of 1 MW of clean power.

Generating electricity from fossil fuels like coal results in carbon emissions. In the US, approximately 1 ton of CO2 is emitted per MWh of coal power produced.

So hypothetically, if we replace 1 MW of coal capacity with 1 MW of emissions-free solar or wind power, it would avoid around 7,000 tons of CO2 per year (at a 35% capacity factor).

Valuing CO2 reductions at $50 per ton, displacing 1 MW of coal with renewables represents $350,000+ per year in avoided climate damage costs.

This environmental value is equivalent or greater to the annual operating revenue from selling the renewable electricity! It demonstrates the additional climate benefit of clean power on top of the energy produced.

Job Creation from 1 MW Capacity

Here‘s one last perspective on the value of 1 MW – the economic benefit of job creation:

• Solar PV projects create around 3-4 long-term jobs per 1 MW of capacity.
• Wind farms create 1-2 permanent local jobs per 1 MW built.
• Coal and gas plants employ less than 1 worker per 1 MW.

So you can see how building renewable energy results in substantially more job opportunities compared to fossil fuel power on a per MW basis.

Those jobs contribute to local economic prosperity and opportunities in rural communities where projects are sited. That‘s tremendously valuable.

Summary: The Total Value of 1 MW

Looking across all these factors, constructing 1 MW of renewable energy like wind or solar results in:

• $100,000 to $350,000 in annual electricity sales revenue
• $1 to $3 million+ in upfront capital investment
• 5-50 acres of land development
• $300,000+ per year in avoided carbon damages
• 3-4 permanent local skilled jobs

Altogether, 1 MW generates between $400,000 to over $1 million per year in total economic, environmental and social value!

I hope walking through these different value perspectives gives you a deeper understanding of what 1 MW of electricity means. While the numbers vary, it clearly represents tremendous overall value.

Let me know if you have any other questions! I‘m always happy to chat more about energy economics.