Tag Archives: Solar

Duke Energy solar: NC, SC, and now Florida

Duke’s new solar farms in Florida echo what Duke was already doing three and a half years ago when an independent study concluded more solar power in North Carolina would save utility ratepayers tens of millions of dollars annually.

Duke solar power farm in Perry, Florida, courtesy Duke Energy

John Downey, Charlotte Business Journal, 23 October 2013, Study: Solar benefits outweigh costs in NC,

It notes the gains from solar projects — such as lower transmission and distribution costs, avoided emissions, lower losses of electricity in transmission. The study calculates that such benefits outweigh the costs by 30 percent to 40 percent.

The utility buying most of that solar power in North Carolina is none other than Duke Energy. Parcel 25-01S-11E-1090700.0000 In Florida, Duke just got approval from the Suwannee Board of County Commissioners to build a 62-acre 8.8 MW solar plant next to its Suwannee Power Plant, while shutting down some old natural gas generating turbines, and keeping some newer ones going.

As we learned only a week before at a meeting about the Basin Management Action Plans (BMAPs) required by the Florida legislature, nitrogen runoff from fertilizers is a huge problem in the Suwannee River Basin, and needs to be reduced 80-90% from every source. Duke Energy (or even FPL) could buy power from distributed solar farms on 1030 more acres in Suwannee County and produce enough power to shut down the rest of its gas turbines at that Suwannee River facility, while generating enough power for twice the number of households in Suwannee County. That would remove power plant emissions and use of cooling water, while helping solve the BMAP problem.

No, I’m not recommending cutting down trees for solar panels. Rooftop solar power and solar panels on marginal farmland would make far more sense. As even Duke says, solar panels produce “little to no waste”, which means no fertilizer or pesticide runoff from them. Graze cows, sheep, or goats around them, and the farmer has income from both the solar panels and the livestock, while still needing no pesticides to control weeds. That’s what Sandy Hill Solar of Elm City, North Carolina does, and the utility buying their power is Duke Energy.

Duke by February 2015 had expanded its solar buying into South Carolina, and by October 2015 announced a new solar farm near Perry, Florida, Duke’s second such project in Florida, and operational in Perry by September 2016. Funny how solar plants can go online in less than a year, unlike the three-year-plus permitting process of interstate natural gas pipelines.

The Solar Energy Industry Association (SEIA) lists numerous studies about the cost-effectiveness of solar power, including that North Carolina 2013 report, now with a copy on the LAKE website. SEIA also lists one for Virginia which is on the MDV-SEIA website, and now also has a copy on the LAKE website.

For Georgia SEIA lists the testimony of GSEIA before the Georgia Public Service Commission in 2013. See also other testimony at that same GA-PSC session, which resulted in GA-PSC requiring Georgia Power to buy twice as much solar power as it wanted to. GA-PSC did the same again in 2015, which was also the year Georgia Power finally stopped its dozen-year-long objections to fixing a 1970s law, and actively backed a 2015 version of that solar financing bill, which passed unanimously in the Georgia Senate and was signed by the same Georgia governor who had accepted campaign finance contributions from multiple pipeline company PACs. After the bill became law, Georgia Power started selling solar power.

Georgia Power’s parent company Southern Company is also installing solar power in the Florida panhandle through its subsidiary Gulf Power, including three projects at military bases totalling 120 MW.

All that is without even comparing solar power to natural gas pipelines such as Sabal Trail. I did that comparison, and I’m still watiing for somebody to show me any flaws in my arithmetic, which shows that FPL’s ratepayers, now stuck with a $3.2 billion bill for the Sabal Trail boondoggle, could get five times as much electricity through solar power at that price.

For Florida SEIA lists only a very old (2003) study with a broken link, which can be found as a google book, but now would mostly be worthwhile as a museum piece. Duke’s own actions in Florida in 2016 and 2017 indicate Duke Energy knows the sun is rising even on the Sunshine State.

Sure, Duke is going too slow (although not as slow as FPL). Duke’s “strategic, long-range plan to install 35 megawatts of universal solar by 2018, and up to 500 megawatts in the state by 2024” is pocket change for peanuts. Stanford Professor Mark Z. Jacobson’s research project has spelled out what Florida (and each other U.S. state) needs in solar, wind, and water power to run everything, depicted on thesolutionsproject.org and backed up by a hundred-plus-page report.

The people of Florida are demanding more solar power. Tens of millions of dollars in fossil fuel and utility money didn’t convince the voters of Florida to support a fake solar amendment last November. The sun is rising, even on the Sunshine State. All the dirty dollars and all the bought politicians can’t stop it.


Investigative reporting costs money, for open records requests, copying, web hosting, gasoline, and cameras, and with sufficient funds we can pay students to do further research. You can donate to LAKE today!

Southern Company Shareholder meeting: renewables more than doubled in one year 2017-05-24

While its natural gas percentage remained flat, and coal and nuclear decreased, Southern Company (SO) more than doubled its renewable energy generation percentage in one year. Maybe I’ll mention that at the annual shareholder meeting in May.

2017 Mix:
2017 Energy Mix
2016 Mix:
2016 Energy Mix

When: 10:00 a.m., ET
Wednesday, May 24, 2017

Where: The Lodge Conference Center
Callaway Gardens
4500 Southern Pine Drive
Pine Mountain, GA 31822-2593

Event: Annual Southern Company
Shareholder Meeting

Southern Company has all its SEC filings online, including Continue reading

How much solar power could Sabal Trail’s $3.2 billion buy?

The same money would buy a lot more electricity through solar power than that fracked methane pipeline could generate.

Update 2 March 2017: Added tables; fixed some typos.

Ramez Naam, his blog, 21 September 2016, New Record Low Solar Price in Abu Dhabi — Costs Plunging Faster Than Expected

Start with Sabal Trail’s numbers

Continue reading

U.S. electric power source projections: solar still most by 2023

According to FERC’s own figures from 2012 and 2016, my solar projections from 2013 (and former FERC Chair Jon Wellinghoff’s) were pretty good, and more U.S. electricity will still come from solar power by 2023. LAKE Solar Table 2017 Since coal and nuclear are already crashing, and natural gas isn’t increasing even as fast as formerly projected, solar could win even faster.

I constructed table below from the 2012 and 2016 summaries of total U.S. electric power generation from all sources, by the Federal Energy Regulatory Commission (FERC).

Look at the 2012 column: only coal and natural gas generated more than 25% of total U.S. electricity.

But in 2016 it’s only natural gas, because coal’s growth rate actually turned negative: utilities are shutting down coal plants, not building them. Back in 2013 I did not predict that to happen so quickly.

Now look at the growth rates, both my 2013 projections (see also the graph on the right) and my corrected 2017 projections. Only wind (and waste heat) is higher than 5%, plus solar alone at more than 50% new installed capacity per year. According to FERC’s 2016 figures (the “actual:” numbers in the 2016 columns), my 2013 solar projection was a little high by deployed utility-scale solar power, but was actually low as a proportion in 2016, because coal and nuclear are already crashing. Sure, one new nuclear power plant opened in 2016, but more than one closed.

And remember, utility-scale solar power, which is all FERC records in its Energy Infrastructure Updates, isn’t the whole story. FERC recorded 7.748 GW of new solar power in 2016, but SEIA added in rooftop and community solar power for a total of 14.6 GW of new solar power in 2016.

You don’t see rooftop coal, or nuclear, or natural gas. You don’t any of those installed in 9-month or less timeframes, as for solar power: they all require multi-year permitting processes because they’re so environmentally destructive. So it’s very unlikely there are any significant additions to coal, nuclear, or natural gas U.S. energy generation beyond what FERC reported.

Solar power has what we could call the personal computer or mobile phone advantage: anybody can own one. Practically by definition, you’ll never see that advantage for utility-scale power generation.

Looking that the 2021 and 2023 projections in the table, of course they’re naive projections, simply taking the old 2013 rate and the new 2017 corrected rate and projecting them forward. The 2013 rate I made by comparing FERC’s 2012 total figures to previous years. The 2017 rate I made by comparing FERC’s 2016 total figures to its 2012 total figures.

By 2021 coal won’t even account for 25% of U.S. electricity generation, and it didn’t even in FERC’s actual 2016 figures. In 2021 natural gas will account for a higher proportion because of coal’s capitulation, even though it’s actually growing slower than my 2013 projection.

Also in 2021, solar and wind will both be greater than 10% of U.S. generation, although wind will not yet reach that by the corrected projection. Since in 2016 according to SEIA solar actually beat wind for new installed capacity, I wonder if wind is already having trouble competing with solar power.

In 2023, by either my old or new projections, solar power will generate more U.S. electricity than anything else. Wind doesn’t grow nearly as fast by the corrected 2017 factor. Maybe 2016 was a glitch for wind, or maybe there’s something deeper going on.

For how naive these projections are, look at the Total row. U.S. electricty demand is unlikely to increase by 20% by 2021 (only four years from now) and it’s even less likely to increase by 52% by 2023 (only seven years from now). What that actually probably means is that coal and nuclear will crash faster and natural gas will follow them down, leaving solar and wind power as the main sources of U.S. electricity.

These projections and this table are just to illustrate some basic points. Other people are doing much more sophisticated projections, such as Stanford Professor Mark Z. Jacobson and his research team, which graphically show fossil fuels and nuclear crashing while solar and wind win.

Goldman Sachs already called this a year ago, and many other big financial institutions predicted even earlier that solar and wind will win. This economic sea change is driven by solar prices dropping faster than Moore’s Law, which is accelerated by economies of scale as solar deployment increases. Economics are driving politics. Even Georgia in 2015 revised its antique law so third party power-purchase-agreements are now possible, and Georgia has become the fastest-growing U.S. solar market.

LAKE Solar Table 2017

Data from: FERC Office of Energy Projects
Energy Infrastructure Update For December 2012
Energy Infrastructure Update For December 2016
Total Installed Operating Generating Capacity
Projections by: Lowndes Area Knowledge Exchange (LAKE)
2012 2016 2021 2023
Power Source Projected Rates Installed GW 2012
(% of Total)
Projected GW 2016
(% of Total)
Projected %increase to 2016 Projected GW 2021
(% of Total)
Projected %increase to 2021 Projected GW 2023
(% of Total)
Projected %increase to 2023
Coal 2013: 1.3% 2017: -3.6% 337.71
actual: 291.79 (24.65%)
corr.: 242.79 (17.13%)
corr.: 225.63 (12.74%)
Natural Gas 2013: 1.8% 2017: 1.0% 491.82
actual: 511.74 (43.23%)
corr.: 537.90 (37.95%)
corr.: 548.71 (30.98%)
Nuclear 2013: 1.0% 2017: -0.1% 107.01
actual: 106.58 (9.00%)
corr.: 106.05 (7.48%)
corr.: 105.84 (5.98%)
Oil 2013: 1.0% 2017: 1.9% 41.32
actual: 44.85 (3.79%)
corr.: 48.95 (3.45%)
corr.: 50.82 (2.87%)
Water 2013: 1.0% 2017: 0.5% 98.12
actual: 100.59 (8.50%)
corr.: 102.62 (7.24%)
corr.: 103.65 (5.85%)
Wind 2013: 22.8% 2017: 9.2% 57.53
actual: 81.87 (6.92%)
corr.: 127.03 (8.96%)
corr.: 151.48 (8.55%)
Biomass 2013: 3.7% 2017: 2.6% 15.00
actual: 16.78 (1.42%)
corr.: 18.90 (1.33%)
corr.: 19.89 (1.12%)
Geo- thermal Steam 2013: 4.2% 2017: 1.5% 3.70
actual: 3.93 (0.33%)
corr.: 4.23 (0.30%)
corr.: 4.36 (0.25%)
Solar 2013: 60.9% 2017: 57.0% 3.90
actual: 23.70 (2.00%)
corr.: 226.03 (15.95%)
corr.: 557.14 (31.46%)
Waste Heat 2013: 0.4% 2017: 14.4% 0.69
actual: 1.18 (0.10%)
corr.: 2.32 (0.16%)
corr.: 3.03 (0.17%)
Other 2013: 0.0% 2017: -8.5% 1.04
actual: 0.73 (0.06%)
corr.: 0.47 (0.03%)
corr.: 0.39 (0.02%)
Total 2013: 0.0% 2017: 0.5% 1157.86
actual: 1183.74 (100.00%)
corr.: 1417.29 (100.00%)
corr.: 1770.94 (100.00%)
corr.: LAKE 2013 projection corrected by LAKE in 2017 according to growth rate from 2012 to 2016.
Factor colors: red: < 0%; orange: < 2%; blue: > 5%; green: > 50%. Proportion background colors: darkyellow > 10%; yellow > 25%.

2012 FERC Source: Data derived from Ventyx Global LLC, Velocity Suite.

2016 FERC Sources: Data derived from Velocity Suite, ABB Inc. and The C Three Group LLC which include plants with nameplate capacity of 1 MW or greater. The data may be subject to update.

* “Other” includes purchased steam, tires, and miscellaneous technology such as batteries, fuel cells, energy storage, and fly wheel.

Waste Heat

What is the mysterious Waste Heat that FERC does not define in either of the source reports? EPA defines it like this:

Waste heat to power (WHP) is the process of capturing heat discarded by an existing industrial process and using that heat to generate power (see Figure 1). Energy-intensive industrial processes—such as those occurring at refineries, steel mills, glass furnaces, and cement kilns—all release hot exhaust gases and waste streams that can be harnessed with well-established technologies to generate electricity (see Appendix). The recovery of industrial waste heat for power is a largely untapped type of combined heat and power (CHP), which is the use of a single fuel source to generate both thermal energy (heating or cooling) and electricity.

So waste heat is efficiency measures for existing thermal industrial processes. Thus it is unlikely ever to account for a significant proportion of electricty generation.

Putting it another way, waste heat is greenwashing obsolete power generation. Case in point: Status of Waste Heat to Power Projects on Natural Gas Pipelines, November 2009, prepared for Interstate Natural Gas Association of America (INGAA). Sorry, fracked methane purveyors, waste heat won’t save you.

Solar power will soon account for the largest proportion of U.S. electricity generation.

And that’s just the start. We know how to get to 100% sun, wind, and water power for the U.S. by 2050, for everything, including heating, cooling, and transportation. Solar power will win like the Internet did.

Let the sun rise!


Investigative reporting costs money, for open records requests, copying, web hosting, gasoline, and cameras, and with sufficient funds we can pay students to do further research. You can donate to LAKE today!

New solar up 95% in 2016, more installed than gas or wind

Solar passed both wind and natural gas in 2016 for most new U.S. electricity installed in a year. Yet Bloomberg still doesn’t quite get it: solar is growing exponentially, and is still on track to produce more U.S. electricity total than any other power source by 2023.

Chris Martin, Bloomberg Markets, 15 February 2017, U.S. Solar Surged 95% to Become Largest Source of New Energy,

  • Solar installations surpassed gas and wind for first time
  • Record 14.6 gigawatts of solar panels added in 2016, SEIA says

Solar developers installed a record 14.6 gigawatts in the U.S. last year, almost double the total from 2015 and enough to make photovoltaic panels the largest source of new electric capacity for the first time.

Continue reading

Solar Panels at Daytona International Speedway

Even FPL is doing solar power now, as evidenced by these pictures John Horton sent back from Daytona yesterday. Front gate So, FPL, how about cancel Sabal Trail and help the sun rise faster on the Sunshine State?

Kelly Pickerel, Solar Power World, 19 February 2016, Three solar canopies complete at Daytona International Speedway, Continue reading

Valdosta to add solar power to both wastewater treatment plants 2016-10-06

Valdosta just leapfrogged the rest of the state in solar power for wastewater treatment plants. Council Tim Carroll expanded beyond the laconic summary of Thursday’s Valdosta City Council action, which itself expanded on a July action. Turns out Valdosta is one of several cities across Georgia with solar power for their wastewater treatment facilities, and maybe not the largest nor the earliest, but apparently the earliest large one. The main point is clear from all of them: solar power for wastewater plants pays for itself in only a few years and can save millions of dollars over decades.

Summary of Actions, Regular Meeting, Valdosta City Council, Thursday October 6th 2016, Continue reading

FPL admits no need for new electricity until 2024: so why Sabal Trail?

17%, 13%, now 0% new electricity needed in Florida, according to FPL? And the Sabal Trail excuse of coal plant “modernization” has already been accomplished without Sabal Trail? While even FPL is now deploying solar power and admits solar “is now significantly influencing FPL’s resource planning”? So what is the Sabal Trail fracked methane pipeline boondoggle for, then?

Two years ago I pointed out that FPL’s own projections in its ten-year plans Continue reading

Southern Company buying half of SONAT from KMI

SO is buying 50% of SONAT from KMI, as multiple people have pointed out, including someone from Southern Company. SO: SONAT in the Southeast Unfortunately SO is not just investing in existing pipelines: this purchase is about “specific growth opportunities”, and yes, it’s tied to SO’s recent purchase of AGL. Southern Company needs to stop plugging dying 20th century fossil fuels and get on with what it’s already started with solar power (and offshore wind).

Southern Company PR 10 July 2016, Southern Company, Kinder Morgan enter Southern Natural Gas pipeline strategic venture, Continue reading

Sen. John Barrasso predicted China emissions wrong

See the power behind FERC get it very wrong. About China emissions, about energy and economy, about solar power, and all in one speech.

American Legislative Exchange Council (ALEC), YouTube, 3 December 2009 (posted 15 Dec 2009), U.S. Senator John Barrasso speaks at ALEC in December 2009 in DC. Part 3,

Just look at China, Continue reading