Solar design, education and code checks
Solar is expensive.
It doesn't have to be.
Professional quotes are 3–4x the cost of the equipment.
Whether you tackle the full install or subcontract key steps, Sunbloc provides the sizing tools, code calculations, and training to control your build and keep the savings.
Learn, build, test, and iterate in the Solar Simulator
Desktop browser only
Build a solar install on a virtual site, then test it against real weather. The simulator is a 3D game made for a keyboard and mouse, so it doesn't run on phones. Open sunblocproducts.com on a computer to play it.
Real components
Panels, batteries, inverters and breakers from trusted manufacturers, with their specs.
NEC checks built in
Overcurrent protection, grounding, conduit and enclosures are checked as you build.
Automated diagrams
The simulator draws a wiring diagram of what you built. Export it or send it to the design app to size wires, breakers, conduit and grounding.
Access the Solar Simulator full screen on itch.io Desktop browser
The course
Start free. Go as far as you want.
Learn the basics of solar for free, then upgrade to master complete system design with our tools and community.
Explore the courseCalculators
Size it yourself, free, right now
Portable power station, battery bank, or PV array, sized before you spend a dollar. No course required, no paywall.
Open the calculatorsExample designs
See examples: electrical diagrams, bill of materials
Real system designs with the diagrams and parts lists that go with them, so you can see what a finished plan looks like.
Browse example designsLive system data
Monitor the off-grid build powering Sunbloc, live
Battery state of charge, solar production, and consumption, streamed from an active system in real time.
View the dashboardMeet the founder
Built by an engineer.
Driven by community.
My name is Matthew Wheeler. I'm a citizen of the Navajo Nation, a solar practitioner with 8 years of industry experience, an alumni of Thayer School of Engineering and the founder of Sunbloc.
Growing up on the Navajo Nation, our home didn't have access to the grid. We relied on a loud noisy generator at night. That experience never left me. After nearly a decade designing solar systems professionally, I built Sunbloc to make engineering-grade solar education accessible to anyone willing to learn, starting with the communities that need it most.
Every calculator, every course module, every live data dashboard is built on my experience in the field. This community is built from an engineer with experience living and building off-grid.
Read our articles/* Weekly livestreams */
Sunbloc livestreams off the grid once a week: ask questions about off-grid living and solar while watching the system's power demand and data live on the website. Every Monday, 7:30–8:30 pm Mountain time.
Ready to design
your system?
Beta pricing: $129 locks in lifetime access to all future Sunbloc design tools and educational content.
Choose your path
New to solar? Start free. Ready to design your own system? Add the course and tool. Want a pro to check your work, or just need advice? There's a track for that too.
Solar Course
(Free)
- Free intro solar course (permitting, electrical basics, maintenance)
- Solar sizing design app (basic sizing, circuits, grounding)
- 3 design projects included
Sunbloc Design App
(3 report credits)
- Solar sizing design app (3 report credits included)
- Dynamic Bill of Materials (BOM)
- Engineering calculation reports
- Up to 50 design projects (credits never expire)
Design App + Course + Community Access
- Solar sizing design app (10 report credits included)
- Full off-grid design course
- Private community access
Design App + Course + Community + Design Review
- Solar sizing design app (10 report credits included)
- Full off-grid design course
- Private community access
- 1 hour live design review
Single Solar Consultation
- Personalized solar system advice
- Expert off-grid insights
- Quick setup guidance