Has solar gotten cheaper?

30 Dec.,2024

 

Why Solar Panels Will Likely Keep Getting Cheaper

There's a big new solar tax credit in town.

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A federal incentive expanded in through the Inflation Reduction Act can offset 30% of the cost of a residential solar installation. That's obviously good news for individual customers -- but it's also great news for the solar industry as a whole. 

With a decade's worth of certainty built into these federal incentives, the price of solar is poised to continue its precipitous drop, and become even more accessible for American homeowners. While inflation and higher interest rates have thrown some curveballs, the industry still set a record for rooftop solar installations in .

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"If anything, the IRA just helped supercharge an already-hot market," said Shawn Rumery, senior director of research for the Solar Energy Industries Association.

Here's what experts are saying about how the cost of solar is changing -- and what you can expect in the next five to 10 years.

Costs will continue to drop

The cost of solar has been falling for a long time. 

"Over the last decade, prices have come down by over 50% in the residential space," Rumery said. 

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The average cost of a rooftop solar system now hovers around $25,000. It's down from about $50,000 just a decade ago, thanks to decreasing material costs, as well as gains on the installation side, with the labor and permitting processes becoming a lot more efficient. "You've really seen, across the board in the last decade, costs coming down. And that's really enabled solar to flourish," Rumery said. 

He expects that trend to continue, despite some temporary flattening of solar prices due to supply chain disruptions. 

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A big reason why solar prices could continue to drop is significant development in the solar industry at large.

The industry will mature

The federal solar tax credit will be in place for at least the next 10 years. That means players in the solar industry -- from installers to manufacturers -- have received a green light to invest in their operations. 

"The permanence of it is good for the industry, it's a good signal for developers," said Pamela Frank, vice president of Gabel Associates, an energy consulting firm. "That generally will benefit consumers."

Installers can grow their staff and streamline their processes even more, Rumery said, and manufacturers can make long-term investments at scale. "The market certainty created by the [Inflation Reduction Act] really helps in that front," he added.

This will likely translate to cost savings for consumers. With economies of scale, and the potential for new domestic solar manufacturing facilities, the solar panels themselves will become cheaper and easier to ship -- addressing some of the international supply chain issues currently facing the industry. 

Some obstacles will remain

If there's anything to temper the good news of the federal boost for solar, it's at the state and international levels.

Globally, supply chain issues have affected nearly every industry and exacerbated price inflation for all kinds of consumer products. Solar is not immune to that, and it's causing some modest cost increases for the residential market. "We need supply chains to improve," Rumery said.

And despite strong support of solar from the federal government, state-level policies remain something of a patchwork. "The market is heavily influenced by state policy," Rumery said. 

In states that offer generous incentives to stack on top of the federal credits, Rumery expects solar to get even more affordable. But in states where that sort of policy is lacking, he said that affordability and adoption will lag.

Energy storage will take off

Solar panels are one expensive thing. A battery to go with them -- and which will really help you get the most out of them -- is another.

"The single biggest new thing for customers is the pairing of solar with energy storage," Frank said.

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Homeowners are increasingly adding a big battery to their solar installations. As more intense storms ravage the country, and grid outages become more common, pairing solar with storage gives you a reliable source of backup power.

"The costs on storage -- it's not cheap, it's still expensive, but you've got tax credits for this," Frank said. The same 30% federal tax credit that's available for solar can also cover a home battery installation.

And just like with solar, increasing demand for home batteries will drive down costs as more people adopt the technology. "We are seeing that pairing, because quite frankly, it just makes sense," Frank said.

Your neighbors will become your allies

For all this talk about affordability, a solar system is still going to run you more than a few thousand dollars -- but there are ways to save some additional cash.

One powerful way to make solar more affordable is partnering with your neighbors. If you can convince three or five other homeowners in your neighborhood to pursue solar, you can approach a solar installer together and negotiate for something like a bulk discount.

Also keep an eye out for neighbors who already have solar: They can be a great source of wisdom and recommendations. "People that do solar, they become sort of evangelical about it," Frank said. They might be able to answer your questions or point you to a reputable solar installer.

Your neighborhood could also become a source of further federal solar discounts. The final details are still being worked out, but Rumery said the Inflation Reduction Act includes additional credits for low- and moderate-income homeowners, and for those living in neighborhoods near fossil-fuel plants or other polluting industries.

"The [solar] industry is really trying to make inroads to low- and moderate-income communities. And I think that's something we need to continue to do," Rumery said.

If all else fails, whether you're a homeowner or a renter, you can also look into community solar. This allows you to subscribe to receive energy from a large solar farm in your area, without installing panels on your roof. 

How much do solar panels cost in my state?

The map below displays the total cash price, cost per watt and system size for a solar panel system per state, according to data from FindEnergy.com. These prices don't take take tax credits or state incentives into account. Some states don't have any FindEnergy solar data and are grayed out on the map.

Solar will become a lot more common

As it stands now, rooftop solar is viewed by many as something of a novelty. After all, solar only accounts for 5% of US energy production.

But Rumery sees a not-too-distant future where that changes. His organization predicts that, by , about 20% of all US energy production will come from solar. That could translate to even more cost efficiency for consumers, and render rooftop solar as common an appliance as a dishwasher, Rumery said.

"As we look five or 10 years down the pipe, I don't think the question is going to be, 'Can you afford to go solar?' It's going to be, 'Can you afford not to go solar?'" Rumery said.

And while costs very well may continue to drop, Frank says it's not worth waiting for a big price breakthrough to invest in solar.

"This is as good a time as any," she said.

More on solar savings

Report: Solar Power is Cheaper Than Ever

NEW YORK, Feb. 21, /PRNewswire/ -- Solar photovoltaic (PV) is now the lowest-cost source of electricity in most places around the world. But cheap solar threatens to become too much of a good thing.

According to Too Much Sun? Heavy Focus on Solar Might Create Volatile US Electricity Markets, allowing solar to become the dominant source of energy without adequate storage capacity might fuel greater volatility in US electricity wholesale markets&#;and potentially even negative prices during daytime hours.

"Cheap solar power will be key to meeting renewable energy goals, but the intermittent nature of the technology poses serious challenges," said Alex Heil, Senior Economist at The Conference Board. "Ensuring the US grid is not overwhelmed by a glut of energy in the daytime&#;followed by shortages when the sun isn't shining&#;will require extensive foresight from policymakers and industry alike. Crucially, concomitant investment in baseload power sources, grid upgrades, and energy storage solutions must keep up with the solar buildout." 

Among the report's key insights:

Solar energy sources are now the lowest-cost providers.

  • The installation cost of solar electricity&#;which constituted 4.8% of all electricity generated in the US in &#;has fallen dramatically over the last decade. Whereas solar prices have fallen 64&#;84% since , installation costs for wind and natural gas have held nearly constant since .
  • On a levelized basis&#;the all-in cost for an energy source&#;utility-level solar now costs between

    $29

    and

    $96

    per megawatt-hour (MWh), compared to $39&#;101 per MWh for natural gas.
  • PV panel manufacturing costs have fallen from

    $5

    per watt in to less than

    $0.25

    in . Despite

    China's

    dominance in this low-margin industry, tariffs and legislation like the US Inflation Reduction Act of (IRA) have created incentives to on-shore PV production and further subsidize solar installation.

Too much solar will create a glut of renewable energy during the day and greater market volatility. 

  • By its very nature, solar energy is highly variable throughout the day. In most grid segments, peak demand now coincides with early evening hours, just as the sun sets&#;and people turn on lights, continue to run AC in hot climates, recharge their devices, and operate other equipment.
  • As a result, in markets like

    California

    , wholesale electricity prices are routinely negative during daytime hours in cooler months. Only the massive afternoon peak at sunset creates the need for additional energy producers to dispatch electricity to the grid.
  • Despite the variability of solar energy and resulting low or negative wholesale electricity prices, tax credits and incentives continue to encourage solar installation in

    California

    and elsewhere.
  • The low wholesale prices during daytime can reduce the financial desirability of other investments that can balance demand, including both fossil-fuel and wind-energy power plants.

Volatile market conditions can be avoided by emphasizing baseload power and energy storage.

  • Volatile market conditions and price fluctuations can be partially avoided by having sufficient utility-level storage capacity available.
  • The grid can be further stabilized by nuclear power&#;which offers capacity utilization of more than 90%.
  • With batteries and grid storage still extremely costly, utilities can incentivize commercial and residential customers to use electricity in the middle of the day when output from solar sites is the greatest and exceeds demand.

About The Conference Board
The Conference Board is the member-driven think tank that delivers Trusted Insights for What's Ahead&#;. Founded in , we are a non-partisan, not-for-profit entity holding 501 (c)(3) tax-exempt status in the United States. ConferenceBoard.org

SOURCE The Conference Board

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