Solar Power Growth & Solar Power Advantages (Charts!)

  • Published on July 15th, 2013 by

Reposted from Cost of Solar:

Last week, we published an article showing why the cost of solar is probably 2–100 times cheaper than you think. With so many people thinking that solar power costs much more than it actually does, one would think that no one is going solar, right? Well, with the advantages of solar power starting to get out there more, and with the cost of going solar beating the heck out of the price of electricity in an increasing number of places, solar power is growing fast in the US. For sure, this is just the beginning, but have a look at these solar power growth charts below for a quick look at recent trends, followed by more on the advantages of solar power.

This first chart shows US solar PV growth through 2012:


A few things to note from the chart above are that:

  1. Residential solar power growth has indeed increased several times over in recent years.
  2. Commercial solar power growth (which is largely what the “Non-Residential” segment represents) has also grown in leaps and bounds. Companies like Walmart, IKEA, Google, Apple, Walgreens, Kohl’s, and many others have discovered that going solar is cheaper than relying on utilities for 100% of their electricity. Of course, the image benefits also don’t hurt, but it’s really the financial benefits that have driven these companies to start going solar to such a large degree.
  3. Utility solar power growth is also strong. The bottom line is: solar power is getting competitive (i.e. cheaper than alternatives) in a growing number of places. As such, at every scale of electricity production, solar power is growing strong.

This next chart shows quarterly US solar power growth through Q1 2013:


If you’re not familiar with the industry, you might think, “Hmm, but solar power installations went down in Q1 2013. Something’s wrong.”

Actually, nothing’s wrong at all. Due to various tax and policy factors, Q4 is always the strongest quarter of the year and Q1 is always the weakest. Take a look at the chart carefully to see that pattern. Even despite this, Q1 2013 was the 4th best quarter for US solar power installations ever. That’s impressive. Also, clearly, Q4 2012 was the best quarter ever in overall solar power growth.

One more thing to note is that residential solar power installations actually increased from Q4 2012 to Q1 2013! So, Q1 2013 was the best quarter ever for residential solar power growth.

The growth should get stronger as the year goes on, and solar power is actually projected to be the #2 source of new US power capacity in 2013. Yep, that means more solar power capacity would be added than coal power capacity, nuclear power capacity, wind power capacity, hydro power capacity, or anything else… except for natural gas power capacity, which is projected to be #1.

2013 is projected to be the best year for US solar power growth by far. But the growth won’t stop there. The advantages of solar power just keep growing and growing, and more and more people are waking up to its benefits. This growth trend is projected to continue for years to come as more and more people and businesses realize that they can save massive money by going solar. Here are two more charts with future growth projections included:


Advantages of Solar Power

Clearly, there’s a reason why solar power is growing so fast, or several reasons. The bottom line is that the advantages of solar power increasingly outweigh the advantages of competing electricity technologies. Let’s run down some of those.

Financial Savings

Money talks. There are certainly more noble reasons for going solar (see below), but one of the advantages of solar power most driving solar growth is clearly the financial advantage. As I’ve detailed previously, solar power costs have fallen off a cliff. As a result, the cost of solar has dropped below the cost of retail electricity in many places. That’s a key with solar power — it can compete with the cost of retail electricity rather than the cost of electricity from a natural gas power plant (which gets sold to your utility before being sold to you). Check out this graph (from the link above) again:

Image Credit: Brian McConnell, Resilience
Image Credit: Brian McConnell, Resilience

Notice the “Electricity (Retail)” and “Electricity (Solar)” crossover.

But even in the case of solar power being produced for sale to the utility (for sale as wholesale electricity rather than for use as retail electricity), it benefits from one key financial advantage — the electricity is created at the time of peak power demand, which makes it worth much, much more. I’ll explain this a bit more in one of the other sections below.

Energy Independence

Energy independence is another key advantage. For one, it’s simply good to cut your dependency on big corporations and semi-monopolies. I think that’s fairly well known. And who doesn’t like the feeling and freedom of being more independent? But there’s another specific advantage here worth paying a little attention to — and it also relates to those financial savings mentioned above. The price of electricity is projected to rise considerably in the coming decades. We have many old power plants that need to retire, and new power plants and infrastructure cost a lot more than old ones. Going solar fixes your prices of electricity for decades to come, so you become immune to those electricity price increases (well, at least when it comes to your home’s electricity supply — you will still be affected a bit as the price of goods goes up).

Environmental Benefits

There’s no denying the massive environmental benefits from going solar. By going solar, you will cut one of your three main contributors to global warming pollution. You will also cut your contribution to air and water pollution. And you will help to conserve water. Solar photovoltaic (PV) panels use over 20 times less water per kWh of electricity than nuclear power plants and over 16 times less water than coal power plants. That’s extremely important as large regions of the US (e.g. California, Colorado, Texas, and the entire Southwest) face increasingly severe water shortage threats.

Produces Electricity When We Need It Most

Our electricity system is complicated. You’re probably not very familiar with its intricacies. Let me catch you up on one of those. Much of our electricity today is produced from baseload power plans (coal and nuclear power plants) that take a long time to start up or shut down. These power plants run pretty continuously, providing the “base” of our electricity needs. However, our electricity needs vary a lot throughout the day. Demand starts to rise in the morning when people wake up, and in many places it peaks in the middle of the day (especially hot days where electricity-sucking air conditioners are heavily used) and in the early evening. Those baseload power plants can’t increase their production beyond a certain point. At that point, “peak-load” power plants must be turned on to produce electricity. The cost of electricity from these power plants is much higher, partly because of how the wholesale electricity bidding system is organized. I won’t bore you with all of that today. But one key point here is that solar power systems don’t have any fuel costs (sunshine is free), so they can underbid any other source of power (well, except perhaps some other renewables like wind power, which also have no fuel costs). The result is that solar power offers utilities cheaper “peak-demand electricity.” Notably, if the savings are passed on to consumers, this also helps to drive down the cost of retail electricity.

Freakin’ Cool

Aside from all of the practical advantages of solar power noted above, let’s not forget that we’re humans… and we care about what’s cool. Helping to save the environment is cool and new technology is cool, so solar power is very cool. Going solar increases our coolness factor. It also improves the perception our kids have of us.

Of course, in the case of businesses, the coolness factor is especially valuable. It makes your business look like a better company, a more responsible company, a more caring company… which it is (unless you’re just going solar for the financial benefits and to look cool).


I think those are the main advantages of solar power. But if you’ve got some more in mind, drop them in the comments below!

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About the Author

is the director of CleanTechnica, the most popular cleantech-focused website in the world, and Planetsave, a world-leading green and science news site. He has been covering green news of various sorts since 2008, and he has been especially focused on solar energy, electric vehicles, and wind energy since 2009. Aside from his work on CleanTechnica and Planetsave, he's the founder and director of Solar Love, EV Obsession, and Bikocity. To connect with Zach on some of your favorite social networks, go to and click on the relevant buttons.