YouSolar, Inc.

Power your life. Independently.™

YouSolar, Inc.

Power your life. Independently.™

Emeryville, CA
Clean Technology
YouSolar is the innovative clean-energy company that created the PowerBloc™, a revolutionary solar+battery system for the home or business that delivers resilient and clean power for a modern world. The highly efficient PowerBloc, has ample power to run an entire house or business, including high-demand appliances such as air conditioners. The PowerBloc™ uses a patented modular power architecture that allows seamless integration of solar, utility and even generator power. Its proprietary power electronics are super-lightweight and compact. The patented stackable, plug-and-play cabinet allows for easy shipment and one-person installation. The PowerBloc aims to democratize power and deliver an impactful technology to fight climate change.


Days Left
Price per Share
Offering Type
Min. Investment


Days Left
Price per Share
Offering Type
Min. Investment

Bonus Rewards

Get rewarded for investing more into YouSolar, Inc.

StartEngine Owner’s Bonus
This offering is eligible for the StartEngine Owner’s 10% Bonus program. For details on this program, please see the Offering Summary section below.
Early Adopters
Next 7 days | 5% bonus shares Perks by Investment Amount
All Investor Owners Club
20% or 10% discount on a PowerBloc™ system (excluding solar panels and installation charges), if purchased in 2020 or 2021, respectively, for U.S. delivery or Free-on-Board, Oakland, California, for all international destinations. Discount applies on
First Tier
$500+ YouSolar-branded organic cotton T-shirt. (A female version is available.)
Second Tier
$1,000+ YouSolar-branded visor hat.
Third Tier
$2,500+ YouSolar-branded organic cotton T-shirt and visor hat.
Fourth Tier
$5,000+ YouSolar-branded titanium sports bottle + 5% bonus shares.
Fifth Tier
$20,000+ Wonderfully crafted, stackable model of the PowerBloc power unit for your desk. (Works as a "stress toy" or paperweight.) + 10% bonus shares.

Reasons to Invest

The PowerBloc™ is a patented, fully-integrated, and high-performance solar+battery system with a lean cost structure resulting in a target margin of 40% at a competitive price.
For over eight months a PowerBloc™ has been the only power source to an off-grid house in Big Sur, California, and we are currently installing systems in two more homes in California.
The Massachusetts Institute of Technology (MIT) Angels of Northern California led YouSolar’s Series A round in December of 2018, and we were a National Finalist in the 2018 CleanTech Open.

“The ultimate solar + battery system for a modern world”

Our Story

The world needs a practical power system for when traditional utilities are unavailable

Solar phone chargers are easy to use and crucial in the case of a power outage. Shouldn’t a solar system for a home or office be just as easy and reliable? We set out to design a solar+battery power system that is simple enough for anyone to put together, yet also powerful enough to run an entire house or business. What we created is the YouSolar PowerBloc™.

Arnold Leitner, CEO, tests connections to a YouSolar STEP™ micro-converter at a PowerBloc™ demonstration system in Big Sur, California.

Our system allows people everywhere to power their lives reliably with solar energy, whether in the wake of a disaster that cuts utility power, or in emerging markets where large populations don’t have reliable or any electricity supply. After devastating wildfires caused power outages in our home state of California, we set out to help these customers power their homes independently. This has presented a sudden and unprecedented market for YouSolar's technology. While our main focus the next two years is growing our U.S. customer base, we believe the whole world benefits from PowerBloc™ technology. The PowerBloc delivers a primary power system that can take power supply beyond utilities, and unleash the unlimited potential of solar power. 

The PowerBloc’s TWIN™ bi-directional converter steps up the battery packs 52 Volt potential to the common 380 Volt direct current bus.

The Problem

Solar energy is still dependent on grid power

Today’s solar and battery systems are a mishmash technology that really only work in combination with stable grid power. None of these systems have been designed to be the primary power source to a home or business. As grid-tied systems, they also depend on utility approval, which makes incumbent utilities the gatekeepers of the entire industry. This is not a blueprint of an energy revolution, especially in some international markets where utility grids are unreliable or utilities view distributed solar as a threat to their business.

A solar array at the Greenschool in Bali, sponsored by YouSolar, one of its investors and its East Asian partners, has been a reliable source of energy to the school.

In our view, existing technologies are also cumbersome. They rely on trained installers with tools, dollies and, in the case of batteries, lift jacks for installation and often come with complicated manuals. Delivering primary power is complex and there are many more problems with existing technology which stand in the way of practical solar-battery systems to be a true utility or generator replacement.

The Solution

An easy-to-install system that works independently of utilities

Our revolutionary PowerBloc™ is a fully-integrated nano-grid - a modular power system that typically comprises a solar array, batteries, and an inverter that forms the grid for the house. The sun is the primary source of energy, but PowerBloc™ can also use and store energy from the grid, a generator, or any other power source. For customers with a utility connection, the grid only contributes energy to the PowerBloc™, but no longer directly connects to the load (and no utility approval is typically required). Therefore, there are no glitches when the grid goes down. And wherever there is no grid, the PowerBloc™ can operate as an off-grid system.

*Image of the stackable cabinet is a rendering of a YouSolar product currently under development.

YouSolar delivers sustainable and affordable power for the modern world. Customizable and scalable, the PowerBloc™ is a private power system that meets many needs, and can be connected to the grid or be off-grid. You can integrate a propane or diesel generator to “extend the range” of the batteries or a wind turbine to diversify power. With the addition of an optional grid-tied inverter, you can even sell power back to the grid. There isn’t really anything the PowerBloc™ cannot do.

Our Traction

We’ve developed advanced technology with a successful flagship system

We deployed a PowerBloc™ at an off-grid house on the coast of Big Sur, which includes a generator, where sunshine in the winter is 3x less than in the summer. That system has been working reliably for over 8+ months.

Arnold Leitner, founder and CEO of YouSolar, explains the PowerBloc™ nano-grid demonstration in Big Sur, California.

Now, we are installing two PowerBloc systems at homes in Calistoga and Los Gatos, California. We helped the GreenSchool in Bali, Indonesia, to power its entire campus 100% from solar and hydro power by delivering two solar arrays and inverters with over 15 kiloWatt of solar which are ready for integration with the PowerBloc.

YouSolar expanded the 22kW legacy solar array, shown here, at the Greenschool in Bail, Indonesia with 15kW of solar.

The MIT Angels of Northern California led YouSolar’s Series A round in December of 2018. Additionally, we were a National Finalist in the 2018 CleanTech Open by making it into the final six companies of this startup competition.

What We Do

We offer a user-friendly solar solution

YouSolar sells a fully-integrated solar+battery nano-grid that includes everything you need. Customers have the option to choose their solar panels, or YouSolar can include the solar array with the PowerBloc™. Assembly and operation of the PowerBloc™ is so easy that the system comes without a manual. The PowerBloc™ uses super-efficient and compact power electronics that deliver constant power at the highest quality.

The PowerBloc™ nano-grid comprises a solar array with STEP™ micro-converters, the revolutionary stackable cabinet (which comprises batteries, a solar manager, the inverter and the controller), and a tablet user interface. *Image of the stackable cabinet is a rendering of a YouSolar product currently under development.

Key features that make the system work:

  • New Standard: Uses 380 V DC used by server farms, EVs, LED lighting

  • Parallel - All  components operate independently of each other and new components can be added easily

  • Modular - The battery is broken down into modules lightweight enough to allow one-person installation

  • Multi-Source - Easy integration of multiple sources of power including utility or generator power

  • Safe - Solar array and system's high potential shut down rapidly when emergency stop is pushed

  • Automatic - Intelligent controller for fully automatic operation of the system

We’ve developed our own controller and energy management system that is integrated with the hardware’s processors. The energy management system uses solar and load forecast to decide if and how fast to charge the batteries. For grid-connected systems, this increases solar utilization, while for off-grid systems it reduces the chance of power loss. The solar forecast comes from our own real-time and location-specific solar production forecast with terrain shading that runs on Amazon Web Service.

The Market

Replacing generators in emerging markets and providing power to those with utility insecurity

Based on our research and opinion, the United States has tens of thousands of upscale residences with property values of USD $1M+ built in unincorporated areas and most of them rely on their own water-well. These customers lose power due to wildfires, heavy winds, and snow. A geospatial, census and tax analysis commissioned by YouSolar showed that there are 1,800 such properties in California’s wine country alone. The PowerBloc™ can deliver constant and high power for an uninterrupted lifestyle and the ability to run the well pump, allowing homeowners to water down the property and put out flying ember during a wildfire.

*Images are renderings of YouSolar products currently under development

Globally, the market we’ve identified with the highest value and largest arbitrage cost is the replacement of generators in emerging markets which run daily for backup or primary power. Customers in these markets critically rely on generator power and pay a very high energy cost.  The global market for residential and commercial generators, which the PowerBloc can replace, is alone U.S.$ 3.75 billion in 2020 and expected to grow to about U.S.$ 5 billion by 2026. Because of its ability to work on unstable grids or with no grid at all, and its modularity that make shipping easy, this massive market is also where the PowerBloc™ faces the least competition.

*Market Source Available Here. *Image of the stackable cabinet is a rendering of a YouSolar product currently under development.

How We Are Different

A system that can be customized and expanded to fit customers' changing needs over time

The PowerBloc™ is a customizable and scalable system. Customers can choose the size and number of power modules (“blocs”) that fit their needs. Our experts can help customers choose the system that is right for them. Customers can start small and expand their system as their needs grow without any design changes to their system. While our current modules are mounted inside a cabinet, our groundbreaking patented stackable cabinet is currently in development, with the goal to have a prototype for testing by September 2020 and ready for the market in 2021.

*This drawing of the stackable cabinet is a rendering of a YouSolar product currently under development.

We always leave some room for growth in the cabinet (or you can get a second cabinet if needed.) Want more storage? Just add another battery module. The controller will recognize any expansion and automatically integrate into the nano-grid. As customers increasingly expect customizable options that fit their specific needs, our plug-and-play system offers a long-lasting energy solution that can grow with them.

The Business Model

A cost-effective energy solution at a 40% target margin

By developing the power electronics with our engineering partner, we have a low cost structure. As a result, we can offer a competitive solution with a 40% target margin. This allows us to deliver an accessible energy solution for many customers while building a profitable business. The scalability of the PowerBloc also allows us to deliver a smaller and viable product at a price that is affordable for people in emerging markets.

A PowerBloc™ nano-grid including solar panels for a modern U.S. single family home costs between $35k to $50k. The PowerBloc™ can use almost any type of solar panel. The PowerBloc™ can, therefore, also retrofit an existing solar array. Customers working  with installers can also choose their own panels. Total product sales margin with and without solar panels are 41% and 45%, respectively. 

Each system receives YouSolar’s solar production forecast for free of the life of the system. We offer a 10-year service package with remote monitoring and troubleshooting, discounts on repairs and upgrades, and one free battery replacement. The price of the service package depends on system size and is in the range of $80 to $100 per month for 10 years. We expect a 15% margin on the service package. For customers who do not purchase the service package, we expect to sell replacement batteries to the customer every 10-15 years. Currently, the battery modules account for about 50% of the price of the system with the solar array and we have a 40% target margin on the battery.

How it works

A reliable and adaptable solar energy system

When we started YouSolar, we quickly realized that building a system using existing components would not result in the revolutionary product that is required to change the paradigm. To build the perfect solution, we needed total control over each part of the product and took the challenges of doing so head-on. Delivering primary power from multiple sources is complex, but the system had to be robust. The controls had to be intelligent, but the system had to be simple to install and use. The PowerBloc™ was designed to deliver on all these requirements. 

The YouSolar STEP™ micro-converter steps each solar panel’s potential from about 35 Volt to 380 Volt DC. It is able to throttle back the solar panel output and has rapid shutdown for firefighter protection.

In our opinion, the existing solar-battery industry is stuck with grid-tied technology which depends on AC currents and a stable grid. We instead built a system based on direct current (DC) where all components are on a common high potential of 380 V DC, and where only in the last step power is converted to alternating current (AC). This made it easy to integrate a battery and multiple power sources. In this design all components, which we call “blocs,” are in parallel and thus independent of each other. Because of this parallel architecture, customers can add solar panels or battery modules without having to worry about how these components affect the other blocs. The PowerBloc™ is more reliable, versatile, and easier to use than other products on the market.


The PowerBloc features YouSolar’s patented “Internal Air Chimney”. This cooling system scales with the number of modules and allows for sealed modules that are spray-water and dust-proof. *Images are renderings of YouSolar products currently under development.

The Vision

Bringing the PowerBloc™ to emerging markets worldwide 

In our view, today’s solar industry does not have a product for those who would benefit the most from solar energy: people in countries with few trained installers and who have unreliable grids, or with no utility power at all.  People living in emerging markets account for most of the world’s population and 90% of electricity demand will be coming from emerging markets in the next decades.

Rice fields in Bali, Indonesia

This population is a huge untapped market for solar, and the crux of solving the climate challenge. In light of this, we are already working with our partners and investors in Indonesia, Singapore, and India to take the PowerBloc™ international.

The PowerBloc™ is a perfect power solution for disaster relief. *Images are renderings of YouSolar products currently underdevelopment.

Our Team

A team of experts and world class support

The executive team at YouSolar is comprised of experts in senior energy markets and solar technology who share a common passion to build the world’s greatest solar+battery system and to change the world for the better.

Why Invest

A clean energy solution that could be key to mitigating climate change

Around the world, millions of generators deliver power when the grid goes out or where there is no grid at all, even in areas with lots of sun. Existing solar-battery technology for primary power delivery is so inadequate that people resort to running expensive dirty generator power that is 3-5x more expensive than solar power and harmful to the environment.

By providing a clean energy solution for emerging markets that will account for most of the growing electricity demand in the coming decades, our product has the potential to be key to solving the climate problem. Our system allows people everywhere to power their lives with solar energy and realize the enormous potential of the sun. With demonstrated successes and more projects in development, now is the perfect time to be a part of the clean energy revolution and invest in YouSolar.

Offering Summary



YouSolar, Inc.

Corporate Address


1575 Brunswig Lane, Emeryville, CA 94608

Offering Minimum



Offering Maximum



Minimum Investment Amount

(per investor)




Offering Type



Security Name


Common B

Minimum Number of Shares Offered



Maximum Number of Shares Offered



Price per Share



Pre-Money Valuation



*Maximum Number of Shares Offered subject to adjustment for bonus shares. See Bonus info below.

Investment Incentives & Bonuses*

All Investor Owners Club

20% or 10% discount on a PowerBloc™ system (excluding solar panels and installation charges), if purchased in 2020 or 2021, respectively, for U.S. delivery or Free-on-Board, Oakland, California, for all international destinations. Discount applies only to the first U.S. $100,000.00 of order(s) by the investor.

Early Bird

First 48 hours - Friends and Family Early Birds | 20% bonus shares 

Next 72 hours - Early Bird Bonus | 15% bonus shares

Next 7 days - Early Adopters | 5% bonus shares 

Perks by Investment Amount

$500+ YouSolar-branded organic cotton T-shirt. (A female version is available.)

$1,000+ YouSolar-branded visor hat.

$2,500+ YouSolar-branded organic cotton T-shirt and visor hat.

$5,000+ YouSolar-branded titanium sports bottle + 5% bonus shares.

$20,000+ Wonderfully crafted, stackable model of the PowerBloc power unit for your desk. (Works as a "stress toy" or paperweight.) + 10% bonus shares.

The 10% Bonus for StartEngine Shareholders

YouSolar, Inc. will offer 10% bonus shares for all investments that are committed by investors that are eligible for the StartEngine Crowdfunding Inc. OWNer's bonus.

This means eligible StartEngine shareholders will receive a 10% bonus for any shares they purchase in this offering. For example, if you buy 100 shares of Class B Common Stock at $0.17 / share, you will receive 110 Class B Common Stock, meaning you'll own 110 shares for $17. Fractional shares will not be distributed and share bonuses will be determined by rounding down to the nearest whole share.

This 10% Bonus is only valid during the investors eligibility period. Investors eligible for this bonus will also have priority if they are on a waitlist to invest and the company surpasses its maximum funding goal. They will have the first opportunity to invest should room in the offering become available if prior investments are cancelled or fail.

Investors will only receive a single bonus, which will be the highest bonus rate they are eligible for.

Note on Bonus Shares and Perks

Investors will only receive a single bonus, which will be the highest bonus rate they are eligible for. 

*All perks occur after the offering is completed.

Other Material Information

Voting Proxy. Each Subscriber shall appoint the Chief Executive Officer of the Company (the “CEO”), or his or her successor, as the Subscriber’s true and lawful proxy and attorney, with the power to act alone and with full power of substitution, to, consistent with this instrument and on behalf of the Subscriber, (i) vote all Securities,(ii) give and receive notices and communications, (iii) execute any instrument or document that the CEO determines is necessary or appropriate in the exercise of its authority under this instrument, and (iv) take all actions necessary or appropriate in the judgment of the CEO for the accomplishment of the foregoing. The proxy and power granted by the Subscriber pursuant to this Section are coupled with an interest. Such proxy and power will be irrevocable. The proxy and power, so long as the Subscriber is an individual, will survive the death, incompetency and disability of the Subscriber and, so long as the Subscriber is an entity, will survive the merger or reorganization of the Subscriber or any other entity holding the Securities. However, the Proxy will terminate upon the closing of a firm-commitment underwritten public offering pursuant to an effective registration statement under the Securities Act of 1933 covering the offer and sale of Common Stock or the effectiveness of a registration statement under the Securities Exchange Act of 1934 covering the Common Stock.

Irregular Use of Proceeds

The Company might incur Irregular Use of Proceeds that may include but are not limited to the following over $10,000: Vendor payments. Salary payments made to one’s self, a friend or relative.

Show More
Most recent fiscal year-end:
Prior fiscal year-end:
Total Assets
$615,093.00 USD
$508,134.00 USD
Cash And Cash Equivalents
$24,533.00 USD
$28,116.00 USD
Accounts Receivable
$0.00 USD
$0.00 USD
Short Term Debt
$360,793.00 USD
$115,733.00 USD
Long Term Debt
$193,796.00 USD
$212,067.00 USD
Revenues And Sales
$1,500.00 USD
$0.00 USD
Costs Of Goods Sold
$0.00 USD
$0.00 USD
Taxes Paid
$0.00 USD
$0.00 USD
Net Income
-$701,485.00 USD
-$552,502.00 USD


A crowdfunding investment involves risk. You should not invest any funds in this offering unless you can afford to lose your entire investment. In making an investment decision, investors must rely on their own examination of the issuer and the terms of the offering, including the merits and risks involved. These securities have not been recommended or approved by any federal or state securities commission or regulatory authority. Furthermore, these authorities have not passed upon the accuracy or adequacy of this document. The U.S. Securities and Exchange Commission does not pass upon the merits of any securities offered or the terms of the offering, nor does it pass upon the accuracy or completeness of any offering document or literature. These securities are offered under an exemption from registration; however, the U.S. Securities and Exchange Commission has not made an independent determination that these securities are exempt from registration.


YouSolar Launches Real-Time Solar Forecast with Global Coverage | Last Day of Early Bird Bonus.

2 hours ago

YouSolar is proud to introduce SPOT™, a historical and real-time hourly solar data service with global coverage. YouSolar streams solar data to each of its PowerBloc™ solar+battery nano-grid installations. The data is not only location-specific but also accounts for shading of the solar array by nearby hills or mountains.

This real-time hourly forecast gives each PowerBloc information on when the first rays hit the solar array and how much sunshine to expect over the day. The forecast is updated every three hours. Each PowerBloc adjusts the forecast irradiance for the orientation of the solar array and then creates a solar production forecast based on the solar panel specifications.

The PowerBloc is a primary power supply to a home. The production forecast informs the PowerBloc's energy management system on how to meet forecast demand. SPOT also detects smoke from wildfires or storm fronts and calculates their impact on solar power production in real-time.

SPOT also has nearly 20 years of historical data, allowing YouSolar to determine the right size of a solar array during the design process. SPOT is free for all PowerBloc customers. SPOT is available to residential or commercial solar installers and utility solar power plant operators under a subscription service.

YouSolar Raises over $300k in 9 Days. Last Day of Early Bird Bonus.

More about SPOT™: SPOT uses a NASA forecast model that assimilates global observations from geostationary and polar-orbiting satellites. Model forecasts are tuned with historical satellite observations from the NASA Clouds and the Earth's Radiant Energy System datasets, which NASA validates against surface radiometer networks. SPOT builds on the capabilities of datasets of the U.S. Department of Energy's National Renewable Energy Laboratory by offering global coverage and consistent historical and forecast data. SPOT continually improves its precision by validating predicted solar production against actual solar production from reference photovoltaic arrays. Hourly historical data is available globally from 2001 to the present.

Wahoo! Over $250k Raised in 3 1/2 Days. Only 12 Hour Left for Early Bird Bonus Shares.

7 days ago

Thank you! StartEngine investors have invested more than $250k in less than 3 1/2 days, and our fundraising campaign has put us into the "Most Momentum" category on StartEngine. We are thrilled and are excited to grow our investor and fan base in the next phase of our campaign. If you have not invested or want to top off the tank, invest now because, in as little over 12 hours, all bonus shares will go away.

We continue to receive great comments, and will we love answering them. Please keep the momentum going and tell your family, friends, and colleagues about YouSolar. Fire up your social media account and share YouSolar with the world.

Thank you again for your support. Clean and reliable power is the foundation of an equitable, healthy, and sustainable world. The PowerBloc™ is designed to deliver on this vision. Together we will change the world of power one independent PowerBloc™ at a time.


Arnold Leitner, CEO

Wow! Over $100k raised from 90+ investors in the first 30 hours!

10 days ago

Thank you! Over 90 StartEngine investors have invested more than $100K in less than 30 hours; we couldn’t be more thrilled with the strong start to our fundraising campaign. I want to personally welcome each of you to the YouSolar family. It’s obvious from the many comments you posted that you are as passionate as we are about bringing the PowerBloc to market. Like you, we strongly believe that clean, reliable, independent power is the foundation of an equitable, healthy, and sustainable world.

Help keep the momentum going strong! Please tell your family, friends, and colleagues about YouSolar; every dollar counts. Thank you again for your enthusiastic support. Together, we are going to create a global success!

Arnold Leitner, CEO

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