The latest issue of the U.S. Energy Information's (EIA) Electric Power Monthly (with data through June 30) reveals that renewable energy sources (i.e., biomass, geothermal, hydropower, solar—inc. small-scale PV and wind) remain in a statistical dead heat with nuclear power vis-à-vis their respective shares of the nation's electrical generation, with each providing roughly 20 percent of the total.
During the six-month period (January — June), renewables surpassed nuclear power in three of those months (March, April and May) while nuclear power took the lead in the other three. In total, according to EIA's data, utility-scale renewables plus small-scale solar PV provided 20.05 percent of U.S. net electrical generation compared to 20.07 percent for nuclear power. However, renewables may actually hold a small lead because while EIA estimates the contribution from distributed PV, it does not include electrical generation by distributed wind, micro-hydro or small-scale biomass.
EIA has acknowledged the neck-in-neck status of nuclear power and renewables and stated as much in a news release it issued in early summer. However, the agency simultaneously stressed its view that "nuclear will generate more electricity than renewables for all of 2017."
Well, maybe ... maybe not.
While renewables and nuclear are each likely to continue to provide roughly one-fifth of the nation's electricity generation in the near-term, the trend line clearly favors a rapidly expanding market share by renewables compared to a stagnating, if not declining, one for nuclear power. Electrical output by renewables during the first half of 2017 was 16.34 percent higher than for the same period in 2016 whereas nuclear output dropped by 3.27 percent. In the month of June alone, electrical generation by renewable sources was 27.15 percent greater than a year earlier whereas nuclear output dipped by 0.24 percent.
In fact, almost all renewable energy sources are experiencing strong growth rates. Comparing the first six months of 2017 to the same period in 2016, utility-scale + small-scale solar has grown by 45.1 percent, hydropower by 16.1 percent, wind by 15.6 percent and geothermal by 3.2 percent. Biomass (inc. wood and wood-derived fuels) has remained essentially unchanged—slipping by 0.8 percent. Electrical generation by solar alone is now greater than that provided individually by biomass, geothermal and oil (i.e., petroleum liquids + petroleum coke).
And on the capacity front, renewables long ago eclipsed nuclear power. For the first half of 2017, the Federal Energy Regulatory Commissions recently reported that renewables' share of total U.S. available installed generating capacity is 19.70 percent compared to 8.98 percent for nuclear—i.e., more than double. Finally, last month's cancellation of the Summer 2 and 3 reactors in South Carolina and Duke Power's subsequent decision to pull the plug on construction of the twin William Lee reactors (also in South Carolina) means the growing gap between renewables and nuclear will accelerate at an even faster clip in the coming years. In addition, the possible cancellation of the uneconomic Vogtle 3 and 4 reactors in Georgia would mean no new nuclear coming online for the foreseeable future, as reactor closures continue. In fact, counting possible additional closures and cancellations, retirements could very likely exceed additions.* "Everyone loves a horse race," noted Ken Bossong, executive director of the SUN DAY Campaign. "However, the smart money is now on renewables to soon leave nuclear power in the dust."
"Nuclear power is in irreversible decline in the U.S., due to rising costs and failing economics of new and existing reactors, alike," said Tim Judson, executive director of the Nuclear Information and Resource Service. "Last month's cancellation of half the new reactors under construction in the U.S. means that gap is going to be wider than projected and accelerating."
*Planned reactor closures through 2025:
- 2018: Palisades (Michigan - 811 MW)
- 2019: Pilgrim (Massachusetts - 688 MW); Oyster Creek (New Jersey - 637 MW); Three Mile Island, Unit 1 (Pennsylvania - 829 MW)
- 2020: Indian Point, Unit 2 (New York - 1,029 MW)
- 2021: Indian Point, Unit 3 (New York - 1,040 MW)
- 2024: Diablo Canyon, Unit 1 (California - 1,118 MW)
- 2025: Diablo Canyon, Unit 2 (California - 1,122 MW)
- TOTAL Capacity Retirements: 7,274 MW
Planned reactor additions:
- 2016: Watts Bar, Unit 2 (Tennessee - 1,150 MW)
- ????: Vogtle, Unit 3 (Georgia - 1,117 MW) - delayed, cancellation under review
- ????: Vogtle, Unit 4 (Georgia - 1,117 MW) - delayed, cancellation under review
- TOTAL Capacity Additions: 3,384 MW (as few as 1,150 MW possible)
Possible reactor closures:
- 2022 or later: Millstone, Unit 2 (Connecticut - 882 MW)
- 2022 or later: Millstone, Unit 3 (Connecticut - 1,198 MW)
- ????: Davis-Besse (Ohio - 889 MW)
- ????: Perry (Ohio - 1,231 MW)
- ????: Beaver Valley, Unit 1 (Pennsylvania - 911 MW)
- ????: Beaver Valley, Unit 2 (Pennsylvania - 904 MW)
- TOTAL Additional Retirements: 6,015 MW
The latest issue of the U.S. Energy Information's "Electric Power Monthly" (with data through April 30) reveals that—for the first time since the beginning of the nuclear era—renewable energy sources (i.e., biomass, geothermal, hydropower, solar—inc. small-scale PV, wind) are now providing a greater share of the nation's electrical generation than nuclear power.
For the first third of this year, renewables and nuclear power have been running neck-in-neck with renewables providing 20.20 percent of U.S. net electrical generation during the four-month period (January to April) compared to 20.75 percent for nuclear power. But in March and April, renewables surpassed nuclear power and have taken a growing lead: 21.60 percent (renewables) vs. 20.34 percent (nuclear) in March, and 22.98 percent (renewables) vs. 19.19 percent (nuclear) in April.
While renewables and nuclear are each likely to continue to provide roughly one-fifth of the nation's electricity generation in the near-term, the trend line clearly favors a rapidly expanding market share by renewables. Electrical output by renewables during the first third of 2017 compared to the same period in 2016 has increased by 12.1 percent whereas nuclear output has dropped by 2.9 percent. In fact, nuclear capacity has declined over the last four years, a trend which is projected to continue, regardless of planned new reactor startups.
From 2013-16, six reactors permanently ceased operation (Crystal River, Kewaunee, San Onofre-2, San Onofre-3, Vermont Yankee, Fort Calhoun), totaling 4,862 MW of generation capacity. Last year, one new reactor (Watts Bar-2) was connected to the grid (after a 43-year construction period), adding 1,150 MW, for a net decline of 3,712 MW since 2013. Six more reactors are scheduled to close by 2021, totaling 5,234 MW (5.2 percent of nuclear capacity). Two more reactors totaling 2,240 MW are scheduled to close by 2025.
Nuclear Giants Limp Towards Extinction https://t.co/GMciqHHIyO @StopNukePower @Nuclear_Matters— EcoWatch (@EcoWatch)1492211104.0
In addition, nuclear generators are discussing the potential retirements of several more. Against the planned retirement of 7,274 MW of capacity, four new reactors are in construction, totaling 4,468 MW. The completion of these reactors is in doubt, however, due to billions of dollars in cost overruns and the bankruptcy of designer-builder Westinghouse.
If all reactors being built are ultimately completed, total nuclear generating capacity will decline by at least 2,806 MW (three percent) by 2025, planned additions against planned retirements. If these projects are cancelled, nuclear capacity will decline by at least 7,274 MW (7.2 percent) from 2017, accounting for roughly 57,000 TMWh/year of generation.
On the other hand, almost all renewable energy sources are experiencing strong growth rates. Comparing the first four months of 2017 to the same period in 2016, solar has grown by 37.9 percent, wind by 14.2 percent, hydropower by 9.5 percent, and geothermal by 5.3 percent. Biomass (inc. wood and wood-derived fuels) has remained essentially unchanged—slipping by just 0.3 percent.
In recent years, the strong growth rates of both solar and wind have resulted in new records being set virtually every month. For the second month in a row, solar and wind combined provided more than 10 percent of the nation's electrical generation. In March 2017, those sources provided 10.04 percent of the nation's electrical generation. That record was eclipsed in April when solar and wind reached nearly 11 percent (10.92 percent) of total generation. And, for the first time, wind and solar combined have provided more electricity year-to-date (113,971 thousand megawatt-hours (TMWh)) than has hydropower (111,750 TMWh).
In April, solar alone reached another milestone, providing more than two percent (2.33 percent) of the nation's electrical supply. Consequently, solar has now moved into third place among renewable sources—behind hydropower and wind but ahead of biomass and geothermal. In April, utility-scale plus small-scale solar provided 20,928 TMWh compared to 20,509 TMWh from biomass and 5,945 TMWh from geothermal.
And not coincidentally, as renewables' share of electrical generation has grown, that of fossil fuels has declined. Electrical generation by fossil fuels (i.e., coal, natural gas, petroleum liquids + petroleum coke) dropped by 5.2 percent during the first third of 2017 compared to 2016.
"In light of their growth rates in recent years, it was inevitable that renewable sources would eventually overtake nuclear power," noted Ken Bossong, executive director of the SUN DAY Campaign. "The only real surprise is how soon that has happened—years before most analysts ever expected."
"Renewable energy is now surpassing nuclear power, a major milestone in the transformation of the U.S. energy sector," said Tim Judson, executive director of the Nuclear Information and Resource Service.
"This gulf will only widen over the next several years, with continued strong growth of renewables and the planned retirement of at least seven percent of nuclear capacity by 2025. The possible completion of four new reactors will not be enough to reverse this trend, with total nuclear capacity falling by 2,806 MW (three percent) through 2025."
A good backup generator can help you keep your home running smoothly, even in the event of a major power outage. And, when you choose a solar generator, you can power your home using clean, renewable energy from the sun. By contrast, gas and diesel generators burn fossil fuels, and are extremely loud and spew harmful emissions into the atmosphere. Here are the best solar power generators available today that can provide a cleaner alternative for home generators.
Our Picks for the Top Solar Generators
Each product featured here has been independently selected by the writer. You can learn more about our review methodology here. If you make a purchase using the links included, we may earn commission.
- Best Overall - Renogy Lycan Powerbox
- Best All-Purpose - Goal Zero Yeti 6000X
- Best for Camping - Jackery Explorer 1000
- Most Affordable - Westinghouse iGen600s
- Fastest Charging- EcoFlow DELTA
- Best for Appliances - MAXOAK Bluetti AC200P
- Most Powerful - Point Zero Energy Titan
How We Reviewed the Best Solar Generators
There are a number of factors we considered when choosing which solar power generators to recommend, including:
- Battery capacity. Battery storage capacity is an important ranking factor. A greater battery capacity means the generator can store more energy, which ultimately means it will last longer without requiring a recharge. This is measured in watt-hours (Wh).
- Power output. When your generator is up and running, it will put out a certain amount of energy, measured in watts. It's important to select a generator that offers enough watts for you to power your essential home appliances.
- Inverter rating. The inverter is a critical part of any backup power generator. Basically, this is the component that turns solar energy into AC (alternating current) electricity. Inverter rating, along with battery capacity, determine how much power you can get from your home backup generator.
- Expandability. In order for your backup generator to function, you'll need some way of charging it. And if you plan to rely on solar energy, that means using solar panels. Expandability means that you can add solar panels to your generator as needed, making it easier to absorb more sunlight for energy.
- Number of outlets. How many devices or appliances do you need to charge? The functionality of your backup generator will be determined by how many outlets or ports are available.
- Price. Of course, as you look for the best home backup generator, one of the most crucial considerations of all is your budget. We've sought to emphasize generators that offer maximum value.
Based on these criteria, we've determined the solar backup generators that offer the most consumer value.Check out our complete list of recommendations below. You can also read our complete review of the best solar energy companies for rooftop home solar systems.
The Best Solar Energy Generators
Best Overall: Renogy Lycan Powerbox
Renogy produces several different power stations and chargers, but we especially like the Lycan Powerbox, a solar power solution that's only a little bit bigger than a suitcase. It comes with an easy-grip handle and heavy-duty wheels, making it one of the most portable solar generators around while still offering 1200W of output, which is enough power for most electronic devices and some appliances.
Why buy: The Lycan Powerbox can provide 1075 watt-hours of continuous power without the noise or fumes associated with gas generators. It offers great portability and includes an LCD display and easy, intuitive controls that allow you to switch between DC power and AC power as needed, as well USB ports and 12 volt car charger ports.
Best All-Purpose: Goal Zero Yeti 6000X
The Yeti 6000X is actually a portable power station that can be used for off-grid camping or powering an RV. With 6,000 watt-hours and two 2000W AC charger ports, it will give you plenty of power for your home. With a home integration kit, it's easy to use the Goal Zero Yeti 6000X to power essential circuits.
Why buy: Though it isn't exactly cheap, the Yeti 6000X power station is a great all-purpose backup generator, including a top-of-the-line charge controller and two robust AC outlets that make it easy for you to keep your household essentials up and running. It can even power a full-size refrigerator or microwave.
Best for Camping: Jackery Explorer 1000
The Jackery Explorer 1000 portable power station is one of the best all-around options, equally suited for outdoor activities and for emergency power readiness. Though it's rated for 1,000 watts, it can actually get closer to 2,000. The lithium battery pack offers a capacity of 1,200 watt-hours, and Jackery's professional MPPT technology makes it easy to get your unit fully charged in a relatively short span of time (usually just eight hours if you have two panels going).
Why buy: Jackery is one of the leading names in outdoor equipment and in clean energy products. This portable power station is a great pick for campers and can also be a very effective home backup power solution for small appliances and electronics thanks to its pure sine wave inverter AC outlets.
Most Affordable: Westinghouse iGen600s
Westinghouse Outdoor Power
Westinghouse is another company that specializes in solar powered generators, most of which are more ideally suited for camping trips. Their iGen600s portable generator, however, offers a wattage of up to 1,200 peak watts, which can certainly function as a decent emergency backup for certain household appliances and small devices.
Why buy: For a portable yet still very versatile solar generator, Westinghouse is a company to keep on your list. The iGen600 power system can run a mini fridge for up to 42 hours or a CPAP machine for up to 46 hours thanks to its lithium-ion battery that offers 592 Watt-hours of energy and a long battery life.
Fastest Charging: EcoFlow DELTA
The EcoFlow DELTA power station is a wonderfully rugged, dependable backup generator that can help meet your power needs during a blackout. For one thing, the charging time is incredible; you can potentially go from zero to 80 percent in under an hour with a wall outlet. Should you ever find yourself facing a power outage, this is an emergency energy solution you'll be really thankful for.
Why buy: The DELTA station from EcoFlow offers a lot of value and usability; in particular, it has one of the fastest recharging times of any solar generator, which may be reason enough for you to choose it over the competitors. The DELTA unit offers 13 ports, meaning it's compatible with pretty much any device or appliance you could ever need to charge.
Best for Appliances: MAXOAK Bluetti AC200P
For a heavy-duty emergency power solution, look no further than to MAXOAK, and particularly to a product called the Bluetti AC200P. With a 2000 Watt-hour capacity, this is one of the most robust solar generators you'll find anywhere.
Why buy: MAXOAK's Bluetti AC200P is the one you're going to want for really heavy-duty home energy backup. With massive AC inverters that offer up to 4800W surge capacity, it can provide more than enough power to fuel all your most critical home appliances, even some HVAC units. Also note the two-year warranty, a generous consumer protection.
Most Powerful: Point Zero Energy Titan Solar Generator
Point Zero Energy is one of the foremost names in disaster preparedness, and when you take a look at their product specs, you'll see why. Their Titan model solar generator offers almost twice the storage of similarly priced units with a high-capacity 2,000-watt-hour battery capacity and 3,000 watt high-efficiency inverter.
Why buy: On a purely technical level, this is the beefiest generator on our list, though of course, it's also one of the priciest. The unit is made with high-efficiency components, meaning it doesn't waste a lot of energy running the system; instead, it just supplies you with plenty of functional electricity when you need it the most.
How Does a Solar Generator Work?
Solar generators capture energy from the sun using photovoltaic solar panels, and store it in a built-in battery. Note that in order to absorb the sun's energy, your portable generator will need solar panels. These are typically sold separately, or as a package with the unit, so you'll need to factor in this additional cost. Solar panels contain solar cells, which are typically made of monocrystalline or polycrystalline silicone that acts as a semiconductor.
Once the sun's energy is stored in the battery, it is converted into AC energy. This happens via a component known as an inverter. AC power is required for most of your household appliances, as well as for charging devices like your phone, laptop, or tablet that normally require a wall charger or AC outlet.
Can a Solar Generator Power My Whole House?
Generally speaking, a rechargeable solar generator won't be able to power your entire house if you lose power. With that said, even a smaller generator can be used to power key devices or appliances, sometimes for days at a time depending on its power consumption. For instance, you can keep your refrigerator up and running, and/or ensure plenty of sustained use for medical devices, like CPAP machines.
With an especially robust generator, you may also be able to connect to core circuits, running multiple appliances at one time.
So, while having an emergency power supply from a solar generator may not mean that you can go about your life just like you would normally, you can at least keep the lights on at home, run your air conditioner, or ensure your perishable food items remain fresh until your electricity comes back on.
What are the Benefits of a Solar Generator?
There are a number of advantages you can anticipate from an emergency generator, especially when you choose to go solar. Consider:
You can minimize the disruption of a power outage.
Again, inclement weather can cause power outages that last for hours, sometimes even days. During that time, you can use a backup generator to keep your essential appliances and devices up and running. This level of preparedness can offer ample peace of mind.
Solar generators offer a clean alternative to other energy sources.
Most generators are powered by fossil fuels, which means they emit a lot of noxious emissions. If you want a clean power source and a minimal environmental footprint, these solar solutions are just the ticket. They are also much quieter than traditional gas or diesel generators.
They can be very cost-effective in the long run.
While the initial purchase price of a solar generator may seem steep, keep in mind that sunlight is free. You don't have to worry about buying fuel or any additional expenses associated with your solar unit.
Find the Solar Generator That's Best for You
Disaster preparedness begins by identifying a reliable power source, and if you want that power source to be clean and renewable, solar generators are ideal. Take a moment to explore the options and find the generator that's right for you.
Josh Hurst is a journalist, critic, and essayist. He lives in Knoxville, TN, with his wife and three sons. He covers natural health, nutrition, supplements, and clean energy. His writing has appeared in Health, Shape, and Remedy Review.
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The latest issue of the U.S. Energy Information's (EIA) Electric Power Monthly (with data through March 31) reveals that renewable energy sources (i.e., biomass, geothermal, hydropower, solar—inc. small-scale PV, wind) accounted for 19.35 percent of net U.S. electrical generation during the first quarter of 2017. Of this, conventional hydropower accounted for 8.67 percent, followed by wind (7.10 percent), biomass (1.64 percent), solar (1.47 percent) and geothermal (0.47 percent). Combined, non-hydro renewables accounted for 10.68 percent of total generation.
Yet, just five years ago, in its 2012 Annual Energy Outlook, EIA forecast: "Generation from renewable sources grows by 77 percent in the reference case, raising its share of total generation from 10 percent in 2010 to 15 percent in 2035 ... The share of the total electricity generation accounted for by non-hydropower renewable generation increases from about 4 percent in 2010 to 9 percent in 2035."
If one assumes growth continuing at about the same annual rate as during the 25-year EIA forecast period (2010-2035), renewables would not be expected to reach 19.35 percent until roughly the year 2057—40 years from now.
EIA's 2012 report further forecast: "Wind [electrical generating] capacity increasing from 39 gigawatts (GW) in 2010 to 70 GW in 2035." A corresponding chart illustrates that projection and also shows solar reaching 24 GW of capacity in 2035.
In reality, according to the Federal Energy Regulatory Commission's latest Energy Infrastructure Update, with data for the first three months of 2017, wind generating capacity already totals 84.59 GW while utility-scale solar has reached 25.84 GW (and this does not include distributed small-scale systems such as rooftop solar). *
Wind + Solar Provide Majority of New Generating Capacity in Q1 https://t.co/Th28vvHtVh @AWEA @SEIA @DeSmogBlog #renewables #ReadyFor100— EcoWatch (@EcoWatch)1493829354.0
"Thus, not only has renewable energy's share of total domestic electrical generation nearly doubled in the past seven years, it has reached a level of output that EIA—just five years ago—did not anticipate happening for another four decades," Ken Bossong, executive director of the SUN DAY Campaign, noted.
"While one might conclude that EIA's methodology is seriously flawed, it is also safe to say that renewables—especially solar and wind—are vastly exceeding expectations and breaking records at an astonishing pace."'
This is clearly evidenced by comparing 2017 to 2016 year-to-date. During the first quarter of 2016, renewables provided 17.23 percent of total generation versus 19.35 percent in 2017. Actual generation by renewables is 9.70 percent greater than just a year ago. In particular, solar (i.e., solar thermal, utility-scale PV and distributed PV) has ballooned by 34.1 percent, wind has expanded by 11.4 percent, conventional hydropower has grown by 7.7 percent and geothermal has increased by 3.2 percent. Only biomass has declined year-on-year—by 1.6 percent.
* Note that generating capacity is not the same as actual generation. Electrical production per MW of available capacity (i.e., capacity factor) for renewables is often, but not always, lower than that for fossil fuels and nuclear power. The total installed operating generating capacity provided by utility-scale renewables in 2017 is now 19.5% of the nation's total for the first three months of 2017 (according to the latest U.S. FERC figures) whereas actual electrical generation from renewables for the same period is roughly 19.4 percent. However, both of these figures understate renewables' actual contribution because neither EIA nor FERC fully accounts for all electricity generated by smaller-scale, distributed renewable energy sources. FERC's data, for example, is limited to plants with nameplate capacity of 1 MW or greater and thereby fail to include distributed sources such as rooftop solar.
According to the latest issue of the Federal Energy Regulatory Commission's (FERC) monthly Energy Infrastructure Update (with data through March 31), wind and solar provided 50.84 percent of the new electrical generating capacity added to the U.S. grid during the first quarter of 2017.
Thirteen "units" of wind totaling 1,479 MW combined with 62 units of solar (939 MW) exceeded the 2,235 MW provided by 21 units of natural gas and 102 MW provided by one unit of nuclear power. There was also 1-MW of capacity from "other" sources (e.g., fuel cells). In the first three months of the year, no new generating capacity was provided by coal, oil, hydropower, biomass or geothermal.
Moreover, the pace of growth of new solar and wind capacity is accelerating. For the first quarter of 2017, new capacity from those sources is 18.07 percent greater than that added during the same three-month period in 2016 (2,418 MW vs. 2048 MW).
Renewable sources (i.e., biomass, geothermal, hydropower, solar and wind) now account for almost one-fifth (19.51 percent) of the nation's total available installed generating capacity: hydropower (8.48 percent), wind (7.12 percent), solar (2.17 percent), biomass (1.41 percent) and geothermal (0.33 percent).
By comparison, at the end of 2016, renewables provided 19.17 percent of the total generating capacity. If current growth rates continue, renewables should top 20 percent before the end of this year.
Generating capacity by renewable sources is now more than double that of nuclear power (9.10 percent) and rapidly approaching that of coal (24.25 percent). *
"The Trump administration's efforts to reboot coal and expand oil drilling continue to be proven wrong-headed in light of the latest FERC data," noted Ken Bossong, executive director of the SUN DAY Campaign.
"Once more, renewables—led by wind and solar—have proven themselves to be the energy sources making America great again."
* Note that generating capacity is not the same as actual generation. Electrical production per MW of available capacity (i.e., capacity factor) for renewables is often lower than that for fossil fuels and nuclear power. As noted, the total installed operating generating capacity provided by renewables in 2017 is now 19.51 percent of the nation's total whereas actual electrical generation from renewables for the first two months of 2017 (according to the latest U.S. Energy Information Administration figures) is roughly 18.2 percent. However, both of these figures understate renewables' actual contribution because neither the U.S. Energy Information Administration nor FERC fully accounts for all electricity generated by smaller-scale, distributed renewable energy sources. FERC's data, for example, is limited to plants with nameplate capacity of 1 MW or greater and thereby fail to include distributed sources such as rooftop solar.
According to the latest issue of the Federal Energy Regulatory Commission's (FERC) monthly Energy Infrastructure Update, renewable energy dominated new U.S. electrical generation put into service during 2016.
Combined, newly installed capacity from renewable sources (i.e., biomass, geothermal, hydropower, solar, wind) totaled 16,124-MW or 61.5 percent, surpassing that from natural gas (8,689-MW), nuclear power (1,270-MW), oil (58-MW) and coal (45-MW) combined.*
10 Reasons to Be Optimistic for a Low-Carbon Future https://t.co/6fFNeOiHqG @GreenpeaceAustP @foeeurope— EcoWatch (@EcoWatch)1483097708.0
This is the second year in a row in which the majority of new generating capacity came from renewable energy sources. In 2015, renewable sources added 12,400-MW of new generating capacity or 64.8 percent of the total. Almost half of new capacity (49.6 percent) came from renewables in 2014.
During calendar year 2016, new wind generating capacity grew by 7,865-MW and was nearly matched by new solar generating capacity (7,748-MW). There was also 314-MW of new hydropower capacity and 197-MW of new biomass capacity; there was no new geothermal steam capacity added in 2016.
The rapid growth of renewables—particularly solar and wind—has resulted their seizing an ever-growing share of the nation's total generating capacity. Five years ago, renewable sources cumulatively accounted for 14.26 percent of total available installed generating capacity; now they provide almost one-fifth (19.17 percent): hydropower—8.50 percent, wind—6.92 percent, solar—2.00 percent, biomass—1.42 percent and geothermal—0.33 percent.
Each of the non-hydro renewables has grown during the past half-decade and their combined capacity (10.67 percent) is now greater than that of nuclear power (9.00 percent) and nearly three times that of oil (3.79 percent).
By comparison, the shares of the nation's energy capacity provided by oil, nuclear power and coal have all declined. Today, oil's share is only 3.79 percent, nuclear power is 9.00 percent and coal is 24.65 percent—five years ago, they were 4.61 percent, 9.44 percent and 29.91 percent respectively. Only natural gas has experienced modest growth and that is from 41.60 percent in 2011 to 43.23 percent today.
The greatest percentage increase of any energy source has been experienced by solar whose share of the nation's generating capacity (2.00 percent) is now nearly twelve times greater than in December 2011 (0.17 percent). Moreover, its growth is accelerating—new solar capacity in 2016 (7,748-MW) more than doubled that added in 2015 (3,521-MW). It now exceeds that of biomass and geothermal combined.
"The focus of the new Trump Administration on fossil fuels is not only environmentally irresponsible but totally wrong-headed in light of the latest FERC data," noted Ken Bossong, executive director of the SUN DAY Campaign. "Year-after-year, renewables are proving themselves to be the energy sources making America great again."
*Note that generating capacity is not the same as actual generation. Electrical production per MW of available capacity (i.e., capacity factor) for renewables is often lower than that for fossil fuels and nuclear power. As noted, the total installed operating generating capacity provided by renewables in 2016 is now 19.17 percent of the nation's total whereas actual electrical generation from renewables year-to-date (according to the latest U.S. Energy Information Administration (EIA) figures) is roughly 15.2 percent. However, both of these figures understate renewables' actual contribution because neither EIA nor FERC fully accounts for all electricity generated by smaller-scale, distributed renewable energy sources. FERC's data, for example, is limited to plants with nameplate capacity of 1 MW or greater and thereby fail to include distributed sources such as rooftop solar.