The Energy Show: Solar Monitoring – the Most Common Solar Problem

The Energy Show: By Barry Cinnamon

This week’s Energy Show is for solar power customers, contractors and inverter manufacturers who appreciate the need for reliable solar power systems. Surprising as it may seem, most solar monitoring systems are simply not up to the reliability standards of the panels and inverters they support.

The good news is that solar monitoring problems almost never affect system performance. Monitoring failures may indicate an inverter problem, but the panels and inverters are almost always working properly. In reality, the problem is with the communications somewhere along the chain – including the inverter, inverter gateway, home router, wireless connections (wifi, zigbee, cellular, etc.), internet connection and server-side software. Troubleshooting these monitoring and communications issues is one of the biggest hassles that contractors have — made more difficult by the fact that most installers do not have home networking IT expertise. As a result, many contractors have changed their inverter suppliers because of less than perfect monitoring hardware and software.

Going back to 2001 I’ve installed inverter systems from over a dozen companies. Not surprisingly, most of these inverters or communications systems are still running (including Trace, SMA, Fat Spaniel, Xantrex, BP Solar, Sharp, Fronius, SunRun, Enphase, SolarBridge, PowerOne, SolarEdge, JLM, Tigo). Although these inverter companies make great inverters, they are not necessarily software and communications experts. The end result is poor monitoring reliability and customer complaints, even when the inverters continue to operate.

To learn more about these solar monitoring issues — as well as my recommendations for long term monitoring reliability— Listen Up to this week’s Energy Show.

Pelosi, McCarthy Top Solar Representatives As SEIA Brings Its Summer Advocacy Blitz To A Close

By Frank Andorka, Senior Correspondent

If there’s one thing Republicans and Democrats can agree on, it’s the increasing political power of solar energy. Just ask the more than 100 representatives the Solar Energy Industries Association (SEIA) visited this summer during what it called its Summer Advocacy Blitz.

And solar is a bipartisan power source. After all, the representative with the most solar jobs in her district is none other than Democratic House Minority Leader Nancy Pelosi. And the representative with the most actual installed solar capacity in his district is Republican House Majority Leader Kevin McCarthy.

Those two don’t agree on anything – but they’d be hard pressed to disagree about the importance of solar energy in California, where both of their districts reside.

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As SEIA President and CEO Abigail Ross Hopper says:

Many Members of Congress do not know what a robust solar industry they have in their district, making this advocacy blitz to educate representatives and staff a critical step in continuing our industry’s growth across the country. We have long said that solar is a bipartisan economic engine and visiting the top 100 solar districts this summer was a clear indicator that that is the case.

That’s why SEIA spent its summer crisscrossing the country and visiting 107 House districts – those with the largest amount of solar in either jobs or installations – to explain to them the industry’s importance. The solar industry has long maintained it is a bipartisan issue, and Hopper and her team set out to prove it.

Exactly 107 congressional districts rank in the top 50 of one of these categories: total solar capacity, number of solar installations, solar jobs and solar companies. SEIA visited with 101 of these offices to educate members and staff about the robust solar businesses in their districts, and how policymakers can ensure continued job growth and investment.

The 107 congressional districts included in SEIA’s advocacy blitz are diverse with Republican (42) and Democratic (65) members.

SEIA’s blitz was a delightful show of political force from the solar industry’s advocacy agency, but they can’t do it alone (and it can’t be just a summer thing, either). It’s up to each of us to make it part of our daily lives to get politically involved and remind our representatives how important solar is to us – and them. Let’s keep the momentum going – and then vote like your livelihood depends on it, because it does.

C-PACE Financing Comes To Delaware, Opening New Financing Option For Commercial Clean Energy

By Frank Andorka, Senior Correspondent

Commercial Property Assessed Clean Energy (PACE) financing is one of the most successful mechanisms for funding clean energy improvements in commercial properties. It allows businesses and other commercial enterprises to make energy efficiency and renewable energy projects to their properties with no money up front. Instead, they pay off those investments through their property taxes.

Currently 35 states have C-PACE enabling legislation, and 20 have full-blown functioning programs.

What’s that? (Holds hand to ear.) I’m being told that number is now 36, after Delaware Governor John Carney signed Senate Bill 113 into law, enabling C-PACE financing in the state. The Delaware Sustainable Energy Utility (DESEU) will serve as the administrator of the PACE program.

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The governor praised the efforts to bring this legislation to fruition:

By offering another method of financing for energy efficiency projects, PACE will help Delaware further our goals to improve economic development, lower energy costs and reduce greenhouse emissions.

PACENation, the national organization that advocates for PACE, reports that since 2009 more than $688 million has been invested in clean energy projects nationwide. They estimate that PACE projects have created 10,300 jobs, generated more than 6.3 million mWh of energy savings, and reduced CO2 emissions by more than 3.1 million metric tons (the equivalent of taking 657,000 cars off the road for one year.)

Tony DePrima, executive director of the DESEU said the next step in the process is designing the program. He hopes to have it up and running by the first quarter of 2019.

Sponsor of the bill in the House, State Representative Trey Paradee, praised the potential economic benefits of the legislation:

Delaware’s C-PACE legislation gives our counties a new tool to boost economic development and job growth. More clean energy projects in Delaware means lower energy bills for our businesses, more work for our local contractors, and more jobs in the clean energy sector.

Utilities Are Catching On To The Energy Storage Revolution (At Least If Growth Is An Indication)

By Frank Andorka, Senior Correspondent

It’s easy to lose sight in today’s electricity market that energy storage isn’t only happening on an individual homeowner level. In fact, a recent study showed that utilities increased their battery storage capacity 68% to 1.3 GWh in 2017.

That number comes from a utility survey conducted by the Smart Electric Power Alliance, an utility-focused trade organization. The survey itself is behind a paywall, but pv magazine has the goods. For example:

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The use of longer-duration batteries, able to discharge for several hours, has enabled balancing of solar with widespread storage, as in California and Hawaii, and with co-located solar + storage installations, as in Hawaii and Florida.

Also:

California utilities remained far in the lead in storage energy capacity, in response to state storage policies that support renewable goals. California added 75 percent of the nation’s incremental battery energy capacity in 2017, and was home to nearly 60 percent of the cumulative energy capacity.

The looming question is whether what you’re seeing in the utility-scale battery market is the same phenomenon you saw with solar power back in that industry’s infancy, to wit: Utilities, with their economies of scale, tried to eliminate competition with residential distributed generation. It’s a fight they’re still waging (see our report on Kansas from earlier today) and, while they may not be winning any enormous victories, it’s a drain on the overall industry potential.

pv magazine also flags this juicy piece of information regarding what will drive further economically advantageous storage options at the utility level:

FERC Order 841 directs RTOs/ISOs (regional transmission organizations and independent system operators) to allow a storage resource to sell into the wholesale market all capacity, energy, and ancillary services that the resource is technically capable of providing.

According to the report, this order alone would add up to 50 GW of energy storage capacity, if all the benefits from storage were realized.

Go read the whole article – it’s a fascinating discussion of where we are in the energy-storage market, at least from the standpoint of the utilities.

More:

US grid-connected battery energy capacity grew 68% last year