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Solar Power Monitoring and Billing through SolarCity

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solarpanels runningAfter experiencing some growing pains with my SolarCity installation, I’m happy to say that I’ve been up and running since February 23rd of 2015 and ready to share my experiences with how the system is monitored and billed.

Savings

The savings on your electricity bill begin immediately after installation of your SolarCity system, and affects both the supply and delivery portions of your bill.

Savings can be pretty dramatic depending on the size of the system and, obviously, how much sunshine your region experiences. The following utility bill is a great example of how I was able to reduce my energy dependence from the grid by over 90%.

Before and After SolarCity

However, despite the reduction in energy needs from my utility company, the cost is not directly proportional to the amount of energy used. Here’s why.

Billing

Having such a drastic reduction in kWh needed from the grid actually comes with a price. Almost everyone who signs up with SolarCity opts-in to a Power Purchase Agreement (PPA) which means you pay nothing upfront (for the gear, install etc.), but you pay SolarCity for every kWh their system generates. That rate can be variable or fixed. I pay a fixed rate of $0.1420 per kWh generated for 20 years. That may sound high to you but considering my local electricity rate is $0.2470, I’m saving 43% per kWh.

It takes SolarCity some time to get up and running with their billing system. For me it took them 3 months to send me the first bill and because of that I received a hefty bill (thankfully late winter months) for all 3 months in one shot. After that, the bills arrive monthly (note that SolarCity requires EFT/Autopay to be set up).

The bills are simple and only state the amount of kWh generated, the rate you pay, and the total amount owed.

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SolarCity Bill

SolarCity collects data generated through their system via a standard internet connection, which they also use for billing purposes. On the first (large/3 month) bill I received, I noticed a difference of 10% (additional cost for me) between the billed amount and the amount the system had reported being generated so I naturally brought this to their attention. The customer service folks that I spoke with weren’t of much help and just told me to read each the meters at the beginning and end of each month if I truly want an accurate reading of how things get billed. So, that’s what I did.

Since inception I’ve saved $320 (over roughly 3 months) or about 42% off what I would have paid National Grid. And the system cost me nothing to install (I actually got a $1,000 Tesla-owner check from them).

They also have an estimated cost savings on the front page when you log in but it’s totally incorrect:

SolarCity Estimated Cost Savings

The mistake they made here is that they’re assuming your electricity rate doesn’t change over time. My electricity rate rose significantly after I signed up for SolarCity and because of that I’m getting a larger savings than what they’re reporting.

Monitoring

Monitoring happens online through MySolarCity.com. The interface is geared more towards new referrals than for actual owners of their system. The section I use most often is the Power Guide.

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SolarCity - Day

Power Guide gives an hour by hour break out of your energy generation along with the weather pattern for that day (ie. how much daylight, cloud coverage …). Hovering over each colored bar will show you the energy generated per inverter. The data can be downloaded in a CSV format and then imported into Numbers or Excel for your own post processing.

If you have multiple inverters, the CSV data for the day is a bit of a pain to analyze since it also includes the energy generated every 15 minutes per inverter.

SolarCity - Month

Power Guide also includes a summary for the year.

SolarCity - Year

The platform also provides a view of your energy generation as it happens in real-time which updates continuously.

SolarCity - Live

Having this features allows you to watch the sun rise and set as viewed through the perspective of your panels which is kind of fun.

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It’s not totally accurate as I’ll see data from certain days which look completely off.

Odd Solarcity Result

API – Not

Automated Solar TweetsI’ve set up automated tweets for detection of  Tesla Superchargers in real-time and decided to the same by sharing my SolarCity data through my home-grown program that fetches the data from Power Guide and then tweeting it.

It would be really nice if SolarCity decided to create a simple REST API that would allow owners to fetch their data.

Summary

SolarCity makes a lot of sense when it comes to cost savings and they’re able to provide this with no upfront cost to the owner. One needs to analyze the effective savings based on the cost incurred when generating energy through the SolarCity system versus your electricity cost, and then decide if the savings is worth the hassle. I’d recommend filling out their contact form and sign up for a consultation to get started.

The billing and monitoring side of SolarCity could definitely use some improvement, and hopefully this will improve over time as the business continues to grow.

I hope this post and series has been helpful. Let me know if you have any questions or thoughts in the comments below.

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"Rob's passion is technology and gadgets. An engineer by profession and an executive and founder at several high tech startups Rob has a unique view on technology and some strong opinions. When he's not writing about Tesla

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Tesla Superchargers were over 10 times as reliable as these rivals

Tesla and Rivian topped this charger reliability study, outperforming competitors by a wide margin.

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Tesla-supercharger-50000-installations
Credit: Tesla

A new study shows that many electric vehicle (EV) charging networks were substantially less reliable than Tesla’s Superchargers or Rivian’s Adventure Network (RAN), while hardware problems accounted for the most common issue experienced

In a Consumer Reports study shared last week, Tesla and Rivian’s charging networks were found to be significantly more reliable than those of other companies, though EV owners reported a problem with about one out of every five charging sessions initiated overall. Respondents said they had issues with just 4 percent of charging sessions at Tesla’s Superchargers, making them the most reliable, while issues with Rivian’s network were reported for just 5 percent of sessions.

Comparatively, Shell Recharge users faced the most issues, with respondents detailing problems in 48 percent of charging sessions. The next least reliable networks were EVgo and Blink, which followed with 43 percent and 41 percent problems reported, respectively. DC fast-chargers had a reported issue rate of 34 percent, while owners faced problems with Level 2 chargers in 25 percent of sessions.

“The findings show that the public charging experience can vary widely based on the vehicle and the charging networks operating in one’s community and along frequent trips,” writes Drew Toher, Consumer Reports’ Campaign Manager for Sustainable Transportation projects. “This is an important consideration for those without access to home charging. With these findings, CR is encouraging all charging networks to take ownership of their performance and implement measures to improve reliability.”

The survey included responses from 1,230 owners of BEVs and plug-in hybrid EVs (PHEVs), detailing experiences from roughly 5,700 individual charging sessions. The majority of issues customers faced were related to hardware, while they also reported problems with payment, charging power, and other factors.

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Out of those who said they had issues directly with the chargers, 76 percent said they encountered broken or unresponsive screens, or those with error messages.

Credit: Consumer Reports (graphic by Sharon Seidl)

Credit: Consumer Reports (graphic by Sharon Seidl)

Credit: Consumer Reports (graphic by Sharon Seidl)

Credit: Consumer Reports (graphic by Sharon Seidl)

READ MORE ON EV CHARGING: Tesla Superchargers dominate J.D. Power EV Charging Study

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“By calling out broken screens, payment issues, and slow charging power, community members are crowdsourcing data that will hold charging networks accountable and improve drivers’ experience with public charging,” Toher adds. “This will help tackle the biggest impediment for consumers looking to purchase a more efficient vehicle.”

The release also notes that EV owners planning to charge beyond their home can take a few steps to help ensure the best experiences possible, including making accounts for several different charging networks, getting apps like A Better Route Planner, Plugshare, and CR partner Chargeway, and performing battery preconditioning, among others.

Tesla’s Superchargers have repeatedly been found to be the most reliable in markets around the world, and in surveys from Consumer Reports, JD Power, and other auto industry research firms. Rivian has also followed Tesla in taking routine measures to keep owners informed about the reliability of chargers. One such example includes the automaker’s deployment last April of “charging scores” for the RAN network, to help improve customer experiences by directing them to working stations.

Tesla exec highlights advantages of prefabricated Superchargers

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Tesla’s Giga Berlin director responds to anti-Musk criticism

Tesla’s Gigafactory Berlin Director weighs in on Elon Musk, sales in Germany, and more: “We focus on what we do best”

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Following Tesla’s third anniversary of the opening of its plant in Grünheide, Germany, Tesla’s head of manufacturing for the facility has responded to questions about Elon Musk’s recent political alignment with U.S. President Donald Trump, a potential trade war, struggling sales in Germany, and several other topics.

Andre Thierig, Senior Director of Tesla’s Gigafactory Berlin, spoke in an interview with German news outlet the Frankfurter Allgemeine this week, noting that the electric vehicle (EV) maker isn’t concerned about the recent political climate surrounding Musk and Trump. Rather, Thierig echoes a goal regularly stated by some of Tesla’s top executives and designers—that the company is simply hyper-focused on making great vehicles.

“We as a company and even more so as a factory location have never positioned ourselves politically,” Thierig said, as translated from German, when asked if the politicization of Musk was harming the brand or factory. “We focus on what we do best, namely to build cars, and very good and very many. For us, this is about production at the site and not in politics. We can separate that well.”

The interviewer also asked about the arson attacks from environmental activists last March, whether or not Tesla is expecting more situations like that, and if the company has taken any measures to increase security given the recent uptick in vandalism and protests worldwide.

Thierig notes that Giga Berlin has “further improved [its] network for sharing relevant information in order to be able to able to respond more quickly” to such attacks. He also says that employees on-site would take action if necessary.

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READ MORE ON TESLA GERMANY: Tesla Giga Berlin ramping to optimum production capacity: plant manager

Regarding Tesla’s decline in February sales in Germany, Thierig points to the shift to producing the new refreshed Model Y from the legacy version, which required the factory to shut down production for a few days. He also notes that he can’t directly comment on how many pre-orders Tesla received for the new Model Y, pointing out that his team and the factory were focused on production, instead leaving sales up to the sales division.

“We in the Gigafactory do not sell, we produce,” Thierig explains. “The sales figures are the responsibility of our sales organization. However, we know our production figures and our production planning, and we are currently moving production further high. Our delivery locations here and on the airport site in Neuhardenberg are relatively empty, so the cars are quickly entering the market.”

When asked if he was concerned about incoming tariffs from the Trump administration, Thierig says that the factory increased localization of suppliers with the recent switch to the new Model Y, adding that 92 percent of components for the EV now come from somewhere in Europe.

“This makes us even more resilient to disturbances in world trade,” he adds. “In addition, we have a high level of vertical integration at the site, which has already paid off in recent years. Neither the turbulence in the supply chains during the corona pandemic nor the chip crisis or the war in Ukraine have led to production disruptions in our country.”

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The interview also touches on Giga Berlin’s long-awaited expansion plans, recent criticism from union IG Metall, what he expects from the incoming federal government, and how he believes that bureaucracy needs to be reduced in the country, among many other topics still.

Thierig has been with Tesla at Giga Berlin since August 2020, first working as a paint manager, before being promoted to Manufacturing Director and subsequently to Senior Director for the factory in general. Prior to that, Thierig was a 19-year veteran with Ford’s German operations, primarily working in paint engineering.

Tesla shares reservations about Giga Berlin’s revised water contract

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U.S. Secret Service in talks for armored cars with this automaker

The Secret Service says it’s still too early to know the future of a potential deal for these “highly-advanced vehicles.”

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Credit: Jeffrey Sauger (via GM)

The U.S. Secret Service has entered early discussions with one automaker about the potential supply of armored SUVs, as announced by the agency this week.

In a post on X on Friday, the Secret Service account posted that Director Sean Curran recently met with executives from General Motors (GM) to discuss a potential next-generation of armored SUVs. The post also included photos of a Cadillac Escalade SUV, along with a few of executives talking about and showing off hardware from the next-gen platform.

“Countering evolving threats require us to constantly explore new innovations and improvements to our armored fleet of protective vehicles,” the account wrote in the post. “Director Sean Curran met with GM executives to discuss advancements that could benefit the next generation of armored SUVs.”

Credit: U.S. Secret Service | X

Credit: U.S. Secret Service | X

Currently, U.S. President Donald Trump typically utilizes an armored Chevy Suburban to get around, and the Secret Service said that it isn’t yet clear when such a next-gen “presidential limousine” could be added to the fleet. The news also comes after GM CEO Mary Barra met with Trump last week, reportedly also to discuss armored SUVs.

READ MORE ON U.S. GOVERNMENT: This former Tesla engineer now heads a federal tech department

“We are too far out to speak to any specific costs or dates,” one Secret Service spokesperson told Reuters. “Our engineering, protective operations and technical security teams work for years to develop the state-of-the-art framework that is used to produce these highly advanced vehicles.”

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Many in the thread also said that the Tesla Cybertruck could be a good option for the Secret Service, coming weeks after the U.S. State Department apparently canceled a potential $400 million Cybertruck order after it was widely reported on. State Department officials have since said that the figure listed in documents for the deal, which was first initiated under the Biden administration, were simply an estimate, and the Cybertruck has been removed from the broadly reported procurement list.

CEO Elon Musk also responded to the reports on X, suggesting that they were either misunderstood or false, noting that he was “pretty sure Tesla isn’t getting $400 million.”

“No one mentioned it to me, at least,” Musk added in the post.

The Cybertruck features a stainless steel exterior that has been touted by Tesla as being able to withstand bullets and other potential attacks. Tesla Cybertrucks have also been rolling out to some U.S. Police Departments in recent months, many featuring armored tune-ups from Unplugged Performance’s Up.Fit government and military fleet division.

Irvine PD unveils Tesla Cybertruck DARE program fleet unit

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