The latest US EIA and FERC data reflect a decade of explosive solar and wind growth – here’s how it breaks down.
The SUN DAY Campaign reviewed EIA’s latest monthly “Electric Power Monthly” report (with electrical generation data through June 30, 2024) and compared it to EIA’s data for June 30, 2019 and for June 30, 2014. It also examined FERC’s latest monthly “Energy Infrastructure Update” report (with installed generating capacity data through June 30, 2024) and likewise compared it to FERC’s data for June 30, 2019 and for June 30, 2014.
The installed US generating capacity mix of all renewable energy sources (i.e., biomass, geothermal, hydropower, solar, and wind) now totals 389 gigawatts (GW). That’s over 50% greater than five years ago (258.58 GW) and more than double the renewable energy capacity that existed a decade ago (190.26 GW). Most of the growth is because of new solar and wind capacity.
Similarly, electrical generation by renewables has shown strong growth. Ten years ago, renewables provided 14.28% of the nation’s electrical generation. Five years later, it had grown to 20.11% and today stands at 26.01%. Again, most of the increase is due to wind and solar.
For the first half of 2024, renewables, including small-scale solar, provided 549,339 gigawatt-hours (GWh) of electrical generation. That’s almost 40% more than the amount renewables generated in the first half of 2019 (399,586 GWh) and nearly double the output reported for the first half of 2014 (287,136 GWh).
Over the past decade, wind has become a leader
Ten years ago, hydropower boasted about 62% more capacity than wind (99.64 GW vs. 61.45 GW) and generated 40% more electricity (140,659 GWh vs. 99,739 GWh).
Five years later, the two were nearly equal in both capacity (hydro: 100.73 GW vs. wind: 98.86 GW) and electrical generation (hydro: 153,790 GWh vs. wind: 154,338 GWh).
Now, however, wind has definitively overtaken hydropower with 152.64 GW of installed capacity compared to that of hydro (100.88 GW) as well as 247,435 GWh of actual electrical output during the first six months of 2024 compared to 126,139 GWh from hydro.
As of mid-2024, wind accounted for 11.72% of total US electrical generation. Five years prior, it was 7.77%, and a decade ago, its share (4.96%) was less than half of today’s figure.
Wind’s share of total installed generating capacity as of June 30, 2024, was 11.75% – a significant increase from its 8.25% share five years earlier and 5.26% a decade ago.
Solar is the fastest-growing source of new capacity and generation
In the past decade, solar has ballooned from a fraction of a percent of both capacity and generation to become the second-largest renewable in both categories.
At the end of June 2014, utility-scale solar provided a mere 9.25 GW (0.75%) of total installed US generating capacity. Generation by utility-scale solar (8,535 GWh) was only 0.42% of the US total and EIA wasn’t even reporting generation by distributed, small-scale (i.e., <1 MW) systems yet.
However, five years later, solar capacity (39.13 GW) accounted for 3.27% of total utility-scale capacity. Actual generation by utility-scale facilities in the first half of 2019 had risen more than fourfold to 36,042 GWh (1.81% of the total) with small-scale solar contributing an additional 17,520 GWh (0.88%).
By the middle of 2024, installed solar capacity had risen to 8.99% of total utility-scale capacity. Utility-scale systems generated 102,614 GWh (4.86%) and small-scale systems added another 42,449 GWh (2.01%).
This rate of solar and wind growth has defied expectations. Three years ago, FERC had projected that installed utility-scale solar capacity would reach 105.04 GW by mid-year 2024. Solar’s actual capacity today is 11.2% more than FERC’s earlier forecast. In addition, wind’s installed capacity is now 2.4% higher than FERC had anticipated.
Hydropower and geothermal ebbs and flows, biomass drops
Over the past decade, the installed capacity of hydropower has edged up very slowly from 99.64 GW in June 2014 to 100.73 GW five years later and 100.88 GW today. Because the installed capacity of all energy sources combined has grown by over 8% during the past 10 years, hydropower’s share of capacity has gradually declined from 8.57% in 2014 to 8.41% in 2019, to 7.77% in 2024.
Electrical generation by US hydropower facilities has ebbed and flowed from year to year. For example, it was 140,65 GWh in the first half of 2014 (7% of the total) and then 153,790 GWh in mid-2019 (7.74%) and is now 126,139 GWh (5.97%) for the first six months of 2024.
Electrical generation by biomass, as well as its share of installed generating capacity, has been on a slow decline for the past 10 years. FERC data indicate that utility-scale biomass capacity dropped from 16.05 GW (1.37% of the total) in mid-2014 to 16.02 GW (1.34%) in mid-2019 to 14.54 GW (1.12%) in mid-2024. Correspondingly, actual electrical generation fell from 30,095 GWh (1.50%) during the first half of 2014 to 29,520 GWh (1.49%) five years later and then to 23,062 GWh (1.09%) this year.
The smallest renewable energy source – geothermal – has shown a pattern similar to that of hydropower. Its installed capacity has risen slightly from 3.87 GW in 2014 to 4.14 GW today, while its share of the US total has consistently hovered around 0.32-0.33%. Actual generation has ebbed and flowed over the past decade providing 8,108 GWh (0.40%) in the first six months of 2014, then 8,376 GWh (0.42%) in the first half of 2019, and now 7,640 GWh (0.36%).
“Notwithstanding minimal changes in the contributions by hydropower, biomass, and geothermal, renewable energy sources have doubled their share of US generating capacity and electrical output over the past 10 years thanks to explosive growth by both wind and solar,” noted the SUN DAY Campaign’s executive director Ken Bossong. “If the trends of the preceding decade continue, renewable energy sources could account for 40% or more of capacity and actual generation by 2035.”
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An Angus ranch in southern Oregon has become the test case for a new kind of cattle-friendly solar, hosting RUTE SunTracker’s first commercial project.
The one‑acre, 120‑kilowatt array is the first real‑world installation of RUTE’s patented, cable‑stayed solar tracker designed specifically to coexist with grazing cattle. RUTE supplies the hardware and is also acting as the developer for its first regional cattle‑plus‑solar demonstrations.
What makes the setup different is the clearance. The tracker system provides about 10 feet of headroom, with panel heights reaching up to 16 feet across the array. That gives cattle full access to the pasture underneath while allowing ranchers to keep managing the land as usual. The project is interconnected to Pacific Power’s grid in Jackson County, Oregon.
Projects like this are getting more attention as the solar industry runs into land‑use limits. In the US alone, about 30 gigawatts of new solar capacity installed last year covered roughly 150,000 acres. Meanwhile, the country has close to 120 million acres of cattle pasture, much of it facing rising heat and water stress.
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That’s where agrivoltaics come in. By adding solar to working pastureland, ranchers can create a second revenue stream while improving growing conditions for forage through partial shade.
“Within weeks of installing the RUTE canopy, the crew observed leafier forage and increased legume presence inside the array compared to outside,” RUTE president Doug Krause said. “Even on irrigated pasture, direct summer sun can be too intense.”
RUTE’s work has been supported by grants from the US Department of Energy’s American‑Made Solar Prize and the US Department of Agriculture. In October, Oregon State University’s Agrivoltaics Program began quantitative studies at the site to measure pasture production, adding hard data to what ranchers are already seeing on the ground.
Next, RUTE plans to take the project on the road. This winter, the company will present at cattlemen’s association meetings as it looks for ranch partners with onsite electric loads, such as irrigation pivot systems.
“In the near term, our focus is on regional, behind‑the‑meter installations so ranchers and power producers can see the equipment operating in real conditions,” Krause said. “While interconnection timelines are long, these projects allow us to build momentum as we connect with developers and ranches on utility‑scale pipeline.”
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Dutch leasing company Mistergreen, known for its “Tesla only” fleet and bold bets on a future of autonomous robotaxis, is reportedly facing bankruptcy. The company’s financial collapse highlights the danger of buying into Elon Musk’s claims that Tesla vehicles would become “appreciating assets”—a prediction that has faced a harsh reality check in the used EV market.
According to reports from Europe, the Dutch Tesla-only car rental firm Mistergreen has wiped out its bondholders and is selling off its operations.
Mistergreen had built its entire business model around the premise of operating a fleet of Tesla vehicles that would not only hold their value but eventually generate revenue as robotaxis.
Instead, the company has been forced to write down millions in fleet value as Tesla aggressively cut new car prices over the last two years, pulling the rug out from under used EV prices, and never delivered on its promise of consumer vehicles becoming robotaxis.
“I think the most profound thing is that if you buy a Tesla today, I believe you are buying an appreciating asset – not a depreciating asset.”
He even went so far as to suggest that a Tesla Model 3 could be worth $100,000 to $200,000 as a revenue-generating robotaxi. Mistergreen bought into that claim and was essentially a leveraged bet on this exact scenario.
They wrote their annual report in 2022:
Our focus is driven by the fact that Tesla’s electric vehicles are currently the highest quality electric vehicles on the market (in terms of battery quality, software updates, efficiency and range, charging network and speed), their hardware and software are prepared for future self-driving cars, and the quality and range of the Tesla (supercharger) charging network is superior. As a result, there is a significant market demand for Tesla’s and we anticipate that Tesla’s will have better residual value in the future due to the good quality of the Tesla’s currently on the market.
However, as we discussed in an article earlier this year about Elon Musk’s biggest lie, the reality has been the exact opposite. Tesla vehicles have depreciated faster than the industry average, exacerbated by Tesla’s own decision to slash prices to maintain demand and by the fact that it never delivered on its promise that software updates would make its consumer vehicles autonomous without supervision.
At its peak, Mistergreen had a fleet of over 4,000 Tesla vehicles, which is impressive, but it meant that it was hit even harder by the depreciation.
For buyers, a cheaper Tesla is great news. For owners or leasing companies holding thousands of them on their books, with high residual-value guarantees, it’s a death sentence.
Mistergreen had issued bonds to buy the Tesla vehicles, but it hasn’t been able to repay them since last year. It’s unclear how much of investors’ money has been wiped out by the bet, but it is in the tens of millions of dollars.
A couple of Dutch, Belgian, and German leasing companies will purchase the remaining fleet.
Electrek reached out to CEO Florian Minderop and co-founder Mark Schreurs for comments, but we didn’t hear back by the time of publishing.
Electrek’s Take
They believed Elon and they lost tens of millions of dollars worth of investors’ money for it.
We have been saying for years that while FSD is impressive, there’s no evidence that it can reach level 4 autonomy in consumer vehicles. Banking on it turning cars into appreciating robotaxis in the near term is financial suicide.
Musk has been promising “1 million robotaxis by the end of the year” since 2020. It’s now late 2025, and while we have seen progress, we only have a small pilot program in a geo-fenced area in Texas under constant supervision, and certainly don’t have a fleet of appreciating assets.
If you bought a Tesla for $50,000 in 2022 expecting it to be worth $100,000 today, you are likely disappointed. If you bought 4,000 of them with borrowed money, you are Mistergreen.
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Kia is offering generous discounts on its EVs with low finance rates and thousands in savings across its entire lineup.
What deals is Kia currently running on its EVs?
After launching a promotion in the US offering over $10,000 off the EV6, EV9, and Niro EV this month, Kia is now extending the savings overseas.
Kia introduced a New Year’s offer in the UK on Tuesday, offering savings across its entire range, including electric vehicles.
The new deal offers generous finance deposit contributions (FDC) of up to £3,000 ($4,000) toward all EV3 models, plus the EV4 GT-Line and GT-Line S trims. A £1,500 ($2,000) FDC is available toward the EV4 Fastback (sedan), EV5, EV6, EV6 GT, EV9, and EV9 GT. The EV4 Air grade is available with a £1,000 ($1,300) FDC.
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Kia is also offering a low 3.9% APR across its entire EV lineup, considerably lower than the 5.9% APR for the new Sportage and the 7.9% APR for the Picanto, K4, Niro PHEV, and Sorento.
From left to right: Kia EV6, EV3, and EV9 (Source: Kia UK)
And that’s not all. Current Kia drivers looking to upgrade can save an extra £1,000 ($1,300) with the “Kia EV Finance Upgrade” loyalty incentive.
The New Year’s EV deals run from December 17, 2025, to March 31, 2026. Kia is also offering two years of free service on all electric models through its “Discover Your Kia EV” campaign, available on all EV3, EV4, EV4 Fastback, EV5, EV6, EV9, and PV5 Passenger grades and variants.
Kia EV4 Fastback GT-Line S 81.4 kWh FWD model (Source: Kia)
On Friday, the EV4 and PV5 Passenger became the brand’s first vehicle eligible for the UK’s Electric Car Grant. Buyers can now earn £1,500 ($2,000) off the on-the-road purchase price for the EV4 Air and PV5 Passenger Essential and Plus trims.
Although not exactly a promotion, Kia launched the EV4 as Canada’s most affordable EV this week. Starting at under $40,000, Kia’s electric sedan (fastback) is even cheaper than the tiny Fiat 500e.
2026 Kia EV4 for the North American market (Source: Kia)
For those in the US, don’t worry, Kia is offering some pretty great year-end deals, including over $10,000 in savings across its entire EV lineup.
The 2025 Kia EV6 and Niro EV are available with up to $11,000 in customer cash, while the larger EV9 is listed with $10,500 in customer cash.
The interior of the 2026 Kia EV9 GT-Line (Source: Kia)
If you’re looking to finance, Kia is offering 0% APR for up to 72 months, plus $3,500 APR Bonus Cash on the EV6 and Niro EV. The three-row Kia EV9 is available with 0% APR for up to 60 months and a $3,000 APR Bonus Cash offer. In the US, Kia’s “New Traditions” sales event runs until January 2, 2026.
Kia’s deals are generous, but its sister company, Hyundai, may have it beat. You can lease a Hyundai IONIQ 5 right now for as low as $189 per month. That’s about as cheap as EV leases get right now.
If you’re wondering what deals are available in your area, you can find local offers using the links below.
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