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Report: Solar savings through a SolarCity residential system

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Having limited winter daylight hours combined with snow covered rooftops doesn’t make for good check out my huge solar savings conversation this month. But putting that aside, the overall economics behind my solar system tells a far greater story.

If you’ve been following along, you’ll recall that my journey with installing a SolarCity system dates back to late 2014. My system consists of 69 panels at 255W each for a total of 17.6kW (more specs on the system can be found on my Solar Generation page).

Solar Pricing

Massachusetts Electricity prices having been rising at approximately 9.5% year-over-year since 2008. When I started with SolarCity, my electricity price was set at $0.1627 per kWh including delivery, supply and taxes. Prices have continued to climb as seen on this chart.

The state went through a fun over-inflation and correction period in 2015, but the current rate I’m paying for electric is $0.1906 kWh with the best supplier I can find.

SolarCity sets their Power Purchase Agreement (PPA) prices based on your current electricity usage and comparable rates for the area that’s receiving their solar system. I had a number of options when I signed up including a variable rate, a fixed rate and an outright purchase but ended up opting for a 20-year fixed rate plan at $0.1420 kWh.

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The way the PPA plan works is that I pay $0.1420 for every kWh generated by the SolarCity panels. The kWh they generate offsets the electricity I would consume. My savings initially worked out to be a difference of $0.0207 kWh or approximately 13% less. Recent savings have been in the $0.0486 kWh mark, or 25%, helped by the rise in electricity rates from utilities.

I incurred no installation or service costs when first setting up my SolarCity system, hence my entire cost for set up is based on the amount of power generated at $0.1420 kWh.

Affiliate: Get a solar cost estimate and find out how much solar can save for your home and business in your area.

Solar Costs

In the last 22 months, I’ve generated a whopping 33.8 MWh (33,800 kWh) of power. My cost for that was $4,800. The SolarCity bill will fluctuate depending on the amount of daylight hour and weather conditions.

In that same period, my electric company reported that I used 23,800 kWh of power. Since the solar power offsets that amount, my actual power use for those 22 months was 57,600 kWh — I use a lot of power between my Tesla, pool, A/C and other electronics we have throughout the house.

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About 59% of the power I need for my house and my Tesla comes from my SolarCity system. I wanted a system that could cover 100% of my needs but National Grid (local electric company) blocked that.

For the 23,800 kWh I purchased from the electric company, I paid $4,595, or $0.1930 kWh (averaged over the 22 months). My total electric cost (money paid to electric company and to SolarCity) for the 22 months was $9,395 or about $427/month.

While I consume a lot of power, 59% of it is provided by the sun.

Solar Savings

When I first signed up with SolarCity, they provided a $1,000 bonus if you registered for a solar system after buying a Tesla. That’s what I did and that’s how I received my $1,000 check form SolarCity.

They also had a referral program at the time which credited you with $250 for each person that signed up for a new system. I managed to get one referral and one more check from SolarCity.

All in all, I started 22 months ago with no money down and $1,250 in my pocket and a nice new solar system on my house. Not a bad start!

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Had I purchased all my power from my electricity company at the average of $0.1930 kWh it would have cost me a total of $11,117. But thanks to SolarCity, my total cost was $9,395, so my savings was $1,722 over the 22 months. I expect savings and solar benefits will continue to grow over the next 20 years as the electric company continues to raise their rates.

SolarCity doesn’t fully capture the amount of  savings that can be had through their system since the initial quote is based on current electricity rates, at the time of the quote. Rates climb over time especially in dense urban areas.

My savings thus far has been more than twice the amount SolarCity originally outlined! Now, if we add in the referral checks, my savings goes up to $2,972. The referrals don’t necessarily scale over time and may get updated so that needs to be factored into the equation.

Summary

For no money down and no risk, I’ve saved about $3,000 in just under 2 years (27% of what I would have paid) while generating green energy and taking load away from an already overloaded power grid.

When I did the math before signing up I knew the system would be a good deal and I’m very happy to see the results proving out. Since I’m on the power purchase program, I don’t have to worry about equipment depreciation, loss in solar cell effectiveness over time (I only pay for what they generate) or a whole slew of other things. By the time my plan is up, much better systems will be available.

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If you’re interested in exploring solar power for your house and have enjoyed my posts thus far, please consider using my referral link to get started. SolarCity will do a free analysis of your situation and let you know if a solar system may work for you: share.solarcity.com/teslaliving

May the Sun be with you!

"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 reportedly testing Apple CarPlay integration: report

Citing insiders reportedly familiar with the matter, Bloomberg News claimed that CarPlay is being trialed by the EV maker internally.

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Credit: Tesla

Tesla is reportedly testing Apple’s CarPlay software for its vehicles, marking a major shift after years of resisting the tech giant’s ecosystem. 

Citing insiders reportedly familiar with the matter, Bloomberg News claimed that CarPlay is being trialed by the EV maker internally. The move could help Tesla gain more market share, as surveys have shown many buyers consider CarPlay as an essential feature when choosing a car.

Not the usual CarPlay experience

Bloomberg claimed that Tesla’s tests involve a rather unique way to integrate CarPlay. Instead of replacing the vehicle’s entire infotainment display, Tesla’s integration will reportedly feature a CarPlay window on the infotainment system. This limited approach will ensure that Tesla’s own software, such as Full Self-Driving’s visuals, remains dominant. 

The feature is expected to support wireless connectivity as well, bringing Tesla in line with other luxury automakers that already offer CarPlay. While plans remain fluid and may change before public release, the publication’s sources claimed that the rollout could happen within months. 

A change of heart

Tesla has been reluctant to grant Apple access to its in-car systems, partly due to Elon Musk’s past criticism of the tech giant’s App Store policies and its poaching of Tesla engineers during the failed Apple Car project. Tesla’s in-house software is also deemed by numerous owners as a superior option to CarPlay, thanks to its sleek design and rich feature set.

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With Apple’s retreat from building cars and Elon Musk’s relationship with Apple for X and Grok, however, the CEO’s stance on the tech giant seems to be improving. Overall, Tesla’s potential CarPlay integration would likely be appreciated by owners, as a McKinsey & Co. survey last year found that roughly one-third of buyers considered the lack of such systems a deal-breaker.

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China considering EV acceleration limits to curb high-speed accidents

If approved, the regulation would be a national standard.

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Credit: Tesla Asia/X

Recent reports have emerged stating that China is considering new national standards that would restrict how fast electric vehicles can accelerate upon each startup. The potential regulation is reportedly being considered amidst a rise in EV-related crashes. 

The draft for the proposed regulation was released by the Ministry of Public Security on November 10. If approved, the regulation would be a national standard.

New regulation targets default performance limits

Under the proposal, all passenger vehicles would start in a state where acceleration from 0–100 km/h (0-60 mph) would take no less than five seconds. This rule would apply to both pure EVs and plug-in hybrids, and it is aimed at preventing unintended acceleration caused by driver inexperience or surprise torque delivery. 

The public has until January 10, 2026, to submit feedback before the rule is finalized, as noted in a CNEV Post report.

Authorities have stated that the change reflects growing safety concerns amidst the arrival of more powerful electric cars. The new regulation would make it mandatory for drivers to deliberately engage performance modes, ensuring they are aware and ready for their vehicles’ increased power output before accelerating.

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A rise in accidents

China’s EV sector has seen an explosion of high-powered models, some capable of 0–100 km/h acceleration in under two seconds. These speeds were once reserved for supercars, but some electric cars such as the Xiaomi SU7 Ultra offer such performance at an affordable cost. 

However, authorities have observed that this performance has led to an uptick in accidents. I recent years, incidents of crashes involving lack of control in vehicles with rapid acceleration have risen, as per an explanatory note accompanying the draft. 

Part of this is due to drivers seemingly being unprepared for the power of their own vehicles. For context, driving schools in China typically use cars that accelerate to 100 km/h in more than 5 seconds. This level of acceleration is also typical in combustion-powered cars.

@teslarati 🚨🚨 Tesla Full Self-Driving and Yap is the best driving experience #tesla #fsd #yapping ♬ I Run – HAVEN.
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Tesla Superchargers crowned best EV charging network in the UK for 2025

The Tesla Supercharger network was voted Best Large EV Charging Network for the second consecutive year.

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Credit: Tesla

Tesla has once again claimed the top spot in the UK’s most anticipated EV charging satisfaction survey. As per Zapmap’s 2025 driver satisfaction rankings, the Tesla Supercharger network was voted Best Large EV Charging Network for the second consecutive year. 

The annual survey, based on thousands of EV driver responses, measures reliability, ease of use, and payment experience across the UK’s public charging landscape.

Tesla tops the survey’s “Large” category

Zapmap’s 2025 rankings, which were drawn from nearly 4,000 battery electric vehicle (BEV) drivers, reflect how quickly public charging is evolving across the UK. For the survey’s “Large” network class, which includes systems with over 500 devices, Tesla once again stood out for reliability and cost efficiency. 

The automaker now offers 1,115 open Supercharger devices at 97 public sites, roughly 54% of its total UK network. That’s a 40% increase in public availability compared to September 2024. A particularly appreciated aspect of the Supercharger network is its cost, which continues to be “significantly lower prices than most rapid/ultra-rapid networks, with drivers also appreciating its reliability,” Zapmap noted.

Tesla Regional Manager’s comments 

Ollie Dodd, Senior Regional Manager for Northern Europe Charging at Tesla, shared his appreciation for the Supercharger network’s award. 

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“We’re thrilled to win Zapmap’s Best EV Charging Network for the second year in a row. Being recognized by the drivers themselves shows that our customer-centric and data-driven approach to building sites is well-received. We look forward to showcasing more customer-centric features in 2026 as we expand the network further and look towards new initiatives in roaming and payment methods,” he said.

Conducted during September and October 2025, Zapmap’s eighth annual survey found that reliability and payment flexibility remain top priorities among EV drivers, two things that the Supercharger network particularly excels in. Fortunately for UK EV owners, the Supercharger network is also aggressively growing.

@teslarati 🚨🚨 Tesla Full Self-Driving and Yap is the best driving experience #tesla #fsd #yapping ♬ I Run – HAVEN.
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