(Sunlight in the Desert. Dubai solar park produces electricity at 5.98 cents per kilowatt hour, displacing a portion of the UAE’s natural gas generation. By 2025, solar systems that are less expensive than even this cutting-edge power plant will become common. By 2050, large scale solar, according to Agora, will cost less than 2 cents US per kilowatt in sun-blessed areas. Image source: International Construction News.)

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Anyone tracking energy markets knows that there’s a disruptive and transformational shift in the wind (or should we say sun?). For as of this year, solar has become cost-competitive with many energy sources — often beating natural gas on combined levelized costs and even edging out coal in a growing number of markets.

Perhaps the watershed event for the global energy paradigm was the construction of a solar plant in Dubai, UAE that priced electricity for sale at 5.98 cents (U.S.) per kilowatt-hour. Even in the US, where grid electricity regularly goes for 9-12 cents per kilowatt-hour, this price would have been a steal.

But the construction of this plant in a region that has traditionally relied on, what used to be, less expensive diesel and natural gas generation sources could well be a sign of things to come. For though solar can compete head-to-head with oil and gas generation in the Middle East now, it’s ability to threaten traditional, dirty and dangerous energy sources appears to be just starting to ramp up.

Solar’s Rapid Fall to Least Expensive Energy Source

A new report from Berlin-based Agora Energiewende finds that by 2025 solar prices will fall by another 1/3, cementing it as the least expensive energy source on the planet. Further, the report found that prices for solar energy fall by fully 2/3 through 2050:

Solar to be least expensive power source

(Solar is at price parity in the European Market now and set to fall by another 1/3 through 2025 according to a report by Berlin-Based Agora Energiewende.)

In Europe, solar energy already costs less than traditional electricity at 8 cents (Euro average) per kilowatt hour. And at 5-9 cents, it is currently posing severe competition to traditional energy sources like coal and natural gas (5-10 cents) and nuclear (11 cents). But by 2025, the price of solar is expected to fall to between 3.8 and 6.2 cents per kilowatt-hour (Euro), making it the least expensive power source by any measure. By 2050, solar energy for the European market is expected to fall even further, hitting levels between 1.8 and 4.2 cents per kilowatt hour — or 1/4 to 1/2 the cost of fossil and nuclear power sources.

These predictions are for a combined market taking into account the far less sunny European continent. In regions where solar energy is more abundant, the report notes that prices will fall to less than 1.5 cents per kilowatt-hour. That’s 2 cents (US) for solar in places like Arizona and the Middle East come 2050.

IEA Shows Solar Ready For Battle Against Carbon Emitting Industry

Already, solar energy adoption is beginning a rapid surge. As of this year, it is expected that 52 gigawatts of solar capacity will be built. But as prices keep falling this rate of build-out could easily double, then double again. By 2025, the IEA expects that solar PV alone could be installing 200 or more gigawatts each year. And by 2050 IEA expects combined solar PV and Solar Thermal Plants (STE) to exceed 30 percent of global energy production, becoming the world’s largest single power source.

Solar Parking Lot

(Parking lots and rooftops provide nearly unlimited opportunities for urban and suburban solar panel installation. Image source: Benchmark Solar)

Considering the severe challenges posed to the global climate system, to species, and to human civilizations by rampant carbon emissions now in excess of 11 gigatons each year (nearly 50 gigatons CO2e each year), the new and increased availability of solar energy couldn’t come soon enough. We now have both an undeniable imperative to prevent future harm coupled with increasingly powerful tools for bringing down world fossil fuel use and an egregious dumping of carbon into the atmosphere and oceans. But we must implement these tools — wind, solar, EVs, efficiency, biomass, geothermal, biogas, tidal and others — as swiftly as possible if we are to have much hope for avoiding the worst impacts of human caused climate change.


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