Business Details
44 Years
experience
Your Trusted Solar Panel Installation Experts in Mariposa
Offline Solar has been a leader in quality solar installations since 1982, providing decades of clean, secure energy solutions. Founded by solar pioneer Don Loweburg, the company established a legacy of innovation and integrity in the Sierra foothills and Central Valley regions. In 2017, ownership transitioned to Brooke and Karen Hanner, who continue the tradition of locally-owned leadership and customer-centric design. With over 1,000 systems installed, the team specializes in grid-tied, off-grid, and battery-backup solar solutions tailored to individual needs. Brooke Hanner brings 30+ years of electrical industry expertise, having started his contracting firm in 1990 before returning to Mariposa County to build his own off-grid home.The company remains committed to energy independence, combining technical expertise with personalized service for residential and commercial clients. Every project emphasizes long-term value, property enhancement, and environmental stewardship. Backed by generations of solar experience, Offline Solar delivers reliable systems designed to last for decades. The team prioritizes transparency, ensuring customers own their systems outright rather than leasing arrangements. Located in Mariposa, California, the company serves Mariposa and Eastern Madera Counties with a focus on sustainable, customized energy solutions.
Services
Grid-Tied Solar
Off-Grid Solar
Battery-Backup Systems
Solar Installations
Custom Designs
Details
- Year established: 1982
Highlights and features
- 30+ years of electrical industry expertise from owner/operators
- Locally-owned since 1982 with deep community knowledge
- Custom-designed systems for grid-tied, off-grid, and hybrid needs
- Over 1,000 solar systems installed across Central California
- Commitment to permanent ownership of solar systems
Services
Grid-Tied Solar
Grid-tied solar systems provide reliable energy solutions connected to the utility grid. These installations offer financial stability through solar power while maintaining grid access for consistent electricity supply. Ideal for properties with stable utility service seeking reduced energy costs.
Off-Grid Solar
Off-grid solar solutions enable complete energy independence for remote properties or those avoiding utility dependence. Custom-designed systems include battery storage and power management components to ensure consistent energy availability without grid connection. Perfect for rural homes and commercial sites without accessible electrical service.
Battery-Backup
Battery-backup systems provide power continuity during grid outages. Available as standalone or solar-integrated solutions, these systems protect critical loads or entire properties. Scalable designs allow customization from single-room protection to whole-house coverage using advanced storage technology.
Solar Installations
Full-service solar panel installations for residential and commercial properties. Services include system design, permitting, and professional installation of photovoltaic arrays. Solutions available for both new constructions and existing buildings seeking energy cost reduction through solar technology.
Custom Designs
Custom solar system design services ensure optimal energy production for unique property requirements. Engineers evaluate site conditions, energy needs, and budget considerations to create personalized system specifications. Solutions integrate seamlessly with existing structures while maximizing long-term energy savings.
People
Brooke Hanner
Owner
With 30+ years in the electrical industry and solar expertise since 1990, Brooke Hanner owns and operates Offline Solar since 2017. He specializes in custom system design and installation, bringing hands-on experience from his own off-grid home project.
Karen Hanner
Co-Owner
Karen Hanner co-owns Offline Solar with her husband Brooke. She contributes to customer relations and business operations while sharing firsthand experience of living in an off-grid solar home designed by her husband.
Don Loweburg
Founder
Solar pioneer Don Loweburg established Offline Solar in 1982. With over 30 years of industry leadership, he developed the company's foundational expertise in solar technology and system design before transitioning ownership in 2017.
Questions
What solar system types do you install?
We install grid-tied, off-grid, and battery-backup solar systems tailored to your property's specific energy needs and location requirements.
How long have you served Mariposa County?
Offline Solar has provided solar solutions in Mariposa County since 1982, with continuous local ownership and operations for over four decades.
Do you serve areas beyond Mariposa?
We primarily serve Mariposa and Eastern Madera Counties, focusing on delivering quality solar solutions within these regions where we maintain deep local expertise.
Can I get a free system quote?
Yes, contact us at 209-742-6333 to schedule a free consultation and receive a customized quote for your solar installation project.
Are systems owned outright or leased?
We provide permanent system ownership - your solar installation becomes your property with no leasing arrangements required.
