Design services for off-grid solar and battery systems are available through specialized solar firms such as Boise Solar, Apex Solar, and Belmont Solar. These companies provide custom system design for home and commercial off-grid needs. Alternatively, firms like AIB Off-Grid and Solar Electric Supply focus on packaged systems and engineering plans, while independent electrical engineers provide technical schematics and expert calculations for custom projects.
For an off-grid solar + battery system, you usually want one of these types of professionals:
Off-grid solar system designer / consultant — designs the electrical architecture, calculates loads, sizes solar panels, batteries, inverters, charge controllers, and backup generation. Some provide drawings only.
Renewable energy engineer (often an electrical engineer) — useful for larger systems, complex sites, multiple buildings, unusual loads, or systems requiring stamped plans.
Solar Engineering, Procurement & Construction (EPC) company — handles design, equipment sourcing, permitting, installation, and commissioning.
Experienced off-grid solar installer — best when they have actual stand-alone system experience (not just grid-tied solar with a battery backup).
For a true off-grid home, I would look for someone who can provide:
Required days of autonomy (for example, 2–5 days without sun)
Battery chemistry and usable capacity
Solar array sizing
Based on your location’s winter solar production, not just summer averages
System architecture
Inverters
Charge controllers
Generator integration
Critical-load panels
Monitoring
Code-compliant drawings
One-line diagrams
Wire sizing
Disconnects
Grounding
Permit documents where required
Examples of firms that specialize in this kind of work include:
NewGrid — focuses on remote/off-grid solar, storage, and microgrids.
Gemini Solar Design — provides off-grid design and documentation services.
Solar Design Studio — works on solar, storage, and microgrid designs.
When interviewing a designer, ask:
“How many fully off-grid homes have you designed?”
“Can you design for winter conditions at my site?”
“Will you provide a complete electrical schematic?”
“What battery/inverter brands do you have experience commissioning?”
“Who handles troubleshooting if the system underperforms?”
If you tell me your location, house/cabin size, whether you’ll run well pumps, HVAC, electric cooking, workshop tools, and whether you want DIY or turnkey installation, I can help you figure out what kind of designer you need and what specifications to request.
Going off-grid is an exciting milestone! Designing a reliable solar and battery system requires careful calculation of your daily energy usage, peak load, geographic location, and days of autonomy (how long you need the system to run without sun).
Depending on your budget, DIY inclination, and location, several types of professionals and companies handle these designs:
Independent Off-Grid Consultants and Homesteaders Experienced off-grid consultants (such as Off-Grid Solutions ) often work collaboratively with you. They design the system with you so that you deeply understand how to maintain and troubleshoot it yourself in a remote setting.[](https://www.offgridsolutions.us/off-grid-solar-consulting.html)
Industrial and Commercial Solar Engineers For heavy-duty or remote industrial applications (like telecommunications or large homesteads requiring stamped engineering), firms like Ameresco Solar provide professional engineer (PE) certified designs, CAD drawings, and pre-tested turn-key systems.[](https://www.amerescosolar.com/off-grid-solar-engineering-design)
Local Specialized Solar Installers Traditional grid-tied solar companies aren't always well-versed in true off-grid configurations (which require specialized hybrid/off-grid inverters and robust battery banks like Tesla Powerwall or sonnenBatterie ). You'll want to search specifically for local contractors who advertise "off-grid" or "microgrid" experience rather than standard grid-tied net-metering installations.
To help point you toward the best design route, tell me:
Where is your off-grid property located (general region/state)?
Are you planning a DIY installation , or do you need a turnkey local installer?
What is your expected energy load (e.g., small cabin vs. a full-size year-round home)?
One Planet Solar - 2350 Wabash Ave, Terre Haute, IN 47807, United States
Accutek Solar - 9797 S Rangeline Rd, Clinton, IN 47842, United States
MPI Solar, LLC - 1750 W 17th St, Bloomington, IN 47404, United States
One Planet Solar - Joliet, IL 60433
Whole Sun Solar - 5264 W Vernal Pike, Bloomington, IN 47404, United States
SAMCO Electric Inc - 4110 Maple Ave, Terre Haute, IN 47804, United States
Rising Sun Solar Outfitters - 624 N County Rd 450 E, Avon, IN 46123, United States
Wellspring Solar - 280 E North Village Dr D, Shipshewana, IN 46565, United States
Atomic Electric and Solar - 1401 S Madison St, Bloomington, IN 47403, United States
Simple Indy LLC - Indianapolis, IN 46201
Solar Tech - 2951 Lower Sandford Road, West Terre Haute, IN 47885
New Hope Solar - Spencer, IN 47460
Jefferson Energy - 6400 Technology Center Dr Suite 190, Indianapolis, IN 46278, United States
If you’re in or around western Indiana, look for a solar designer/installer with specific off-grid and battery-storage experience, ideally NABCEP-certified.
One Planet Solar — Terre Haute; solar plus battery/backup systems.
Accutek Solar — Clinton; solar and electrical contractor serving western Indiana.
New Hope Solar — Spencer; custom solar + battery design.
MPI Solar, LLC — Bloomington; solar and energy-storage systems.
For a true off-grid homestead, ask specifically for experience sizing batteries for winter/low-sun periods, generator integration, and 24/7 load analysis—not just grid-tied solar. NABCEP has a dedicated Energy Storage Installation Professional certification.
Designing an off-grid solar battery system requires precise calculation of your daily energy loads, peak demand, local weather patterns, and battery chemistry limits.[](https://rvsolarconsulting.com/off-grid-solar-consulting/)
Depending on whether you want a turnkey professional build, a remote engineering consultation, or a DIY approach, several types of professionals and entities design these systems:
Specialized Off-Grid Solar Installers and EPCs (Engineering, Procurement, and Construction): Local or regional solar contractors who specifically market "off-grid" or "remote power" solutions (such as Greenlife Technologies ). They handle everything from the initial load audit and equipment specification to permitting and physical installation.[](https://www.greenlifetechinc.com/off-grid-systems)
Distributor Design Services: Major wholesale solar distributors (such as Northern Arizona Wind & Sun, AltE Store , or Wholesale Solar/DIYSolar ) employ in-house application engineers and technicians. If you purchase your major components through them, they often provide free or low-cost system design reviews to ensure your battery bank, inverter/charger, and PV array are fully compatible.
Equipment Manufacturers: Major ecosystem providers like Enphase Energy, Tesla Energy , and sonnen engineer proprietary smart storage hardware. Their certified dealer networks are trained to configure their specific battery-inverter stacks for off-grid or microgrid applications.
You (The DIYer with Design Tools): Many off-grid homesteaders use specialized calculators (like theрою National Renewable Energy Laboratory's NREL PVWatts or specialized off-grid sizing worksheets) to size their own systems before buying pre-kitted packages.
To help narrow down who you should talk to, tell me:
Are you looking for a turnkey local installer or a DIY/remote design service?
What kind of property are you powering (a small hunting cabin, a full-time off-grid home, an RV)?
Off Grid Contracting - 3431 Baker Springs Rd, White Pine, TN 37890, United States
Superior Solar Sales - 137 N Moore Rd, Whitesburg, TN 37891, United States
Greene Tech Renewable Energy - PO Box 2226, Johnson City, TN 37605
Titan Solar and Electric - 1395 E Hwy 25 70, Newport, TN 37821, United States
Atlantic Electric and Solar - 165 Nix Creek Church Rd, Marion, NC 28752, United States
Your Home Solar - 816 Willow Ave, Knoxville, TN 37915
LightWave Solar - 516 W Oakland Ave, Ste 102, Johnson City, TN 37604
For a true off-grid setup, you’re looking for an off-grid solar designer, renewable energy engineer, or solar + battery design-build contractor. The key distinction is that many solar installers mainly do grid-tied systems; an off-grid designer has to size the entire power system around your actual energy use and worst-case conditions.
These professionals typically design:
Solar array size — based on seasonal sunlight, not just average days
Battery bank capacity — including how many days of autonomy you want
Inverter/charger system — including startup surges from pumps, refrigerators, tools, HVAC, etc.
Backup generator integration (if you choose one)
Electrical distribution, protection, and controls
Expansion capability if you add buildings or loads later
Types of people to hire
Off-grid solar engineering firms
Best for remote homes, cabins, farms, and complex systems.
Example: NewGrid specializes in engineered off-grid solar, storage, and microgrid systems.
Independent solar designers
They create the plans and equipment specifications; you can hire an electrician or installer separately.
Example: Gemini Solar Design provides off-grid design packages, including battery banks, hybrid inverters, and generator integration.
Local solar contractors with off-grid experience
Good if they have actually commissioned stand-alone systems, not just grid-connected solar with backup batteries.
Near Greeneville, TN, some companies advertising solar and energy-independence work include:
Greene Tech Renewable Energy LLC — Northeast Tennessee contractor offering solar PV, storage, generator integration, and off-grid/hybrid systems.
Off Grid Contracting — White Pine, TN company focused on off-grid construction and renewable-energy systems.
Superior Solar Sales — Whitesburg, TN supplier that supports DIY/off-grid solar builds.
Questions to ask before hiring someone
“How many fully off-grid systems have you designed and commissioned?”
“Will you do a load analysis before recommending equipment?”
“How do you size for winter conditions and cloudy periods?”
“What battery chemistry and inverter platform do you recommend, and why?”
“Can you provide a one-line electrical diagram and equipment list?”
“Who handles troubleshooting if the system fails?”
If you’re building a house, cabin, farm, or homestead, the right designer will want details such as:
location and solar exposure
square footage
daily kWh use (or appliance list)
well pump requirements
heating/cooling plans
workshop equipment
whether you want generator backup
I can also help you estimate the size of the solar array and battery bank if you describe what you plan to power.
Electrical code, grounding, disconnects, and safety requirements
Examples of firms that specialize in this kind of work include:
NewGrid — focuses on engineered off-grid solar, microgrids, and remote power systems.
Gemini Solar Design — provides design documentation for off-grid solar, battery storage, and hybrid systems.
When interviewing someone, ask:
“How many true off-grid systems have you designed and commissioned?”
“Can you show me a system diagram and load calculation before equipment selection?”
“How do you size for the worst solar month, not the yearly average?”
“What is your plan for 3–5 cloudy days?”
“Do you integrate generators, well pumps, and high-surge loads?”
Avoid contractors who only do grid-tied rooftop solar with a battery added on afterward; a true off-grid system is closer to designing a small independent utility.
If you tell me:
your location,
cabin vs. full-time home,
square footage,
major loads (well pump, heat, fridge/freezer, tools, EV, etc.),
and whether you want DIY or a turnkey install,
I can help identify the right type of designer and what size system you’re likely looking at.
Designing an off-grid solar and battery system requires careful load calculation, geographic solar-hour analysis, and equipment matching (inverters, charge controllers, and chemistry types like Lithium Iron Phosphate).
Depending on whether you want a DIY kit, professional remote engineering, or full local turnkey installation, several types of professionals and companies handle this work:
Independent Off-Grid Solar Consultants: Freelance or boutique renewable energy consultants (such as those found via RV Solar Consulting or regional off-grid engineering practices) offer personalized load-profiling and system architecture design without being tied to a single hardware brand. [](https://rvsolarconsulting.com/off-grid-solar-consulting/)
Local Certified Solar Installers (NABCEP Certified): Local engineering, procurement, and construction (EPC) companies certified by the North American Board of Certified Energy Practitioners (NABCEP) specialize in standalone, remote, or hybrid off-grid builds. They handle everything from site assessment and local permitting to final mechanical and electrical installation.
Equipment Manufacturers' Design Tools: Major storage manufacturers like Tesla Energy (Powerwall) or sonnen Inc. provide dealer networks and internal application engineers who help size configurations capable of 100% off-grid autonomy.
To help point you toward the right designer or kit, let me know:
Where is the location (roughly, for sun exposure)?
Are you planning to DIY with a pre-wired kit or hire a turnkey local installer?
What are your primary power needs (e.g., small cabin vs. full-sized modern homestead)?
Ellison Electric and Solar - 16081 Via Olinda, San Lorenzo, CA 94580
Sun's Free Solar - 1708 Paru St, Alameda, CA 94501
Nabu Energy - Solar PV and Energy Storage battery Installation Company. - 39899 Balentine Dr #200, Newark, CA 94560, United States
Sun Light & Power Solar - 1035 Folger Ave, Berkeley, CA 94710, United States
Sun Pirates - Danville, CA 94506
AHSolar Pro Solutions - 1798 Timothy Dr, San Leandro, CA 94577
Super Solar - 294 Pershing Dr, Oakland, CA 94611
Solar Engineering - Belmont, CA 94002
Besty Solar Inc. - 2140 Peralta Blvd, Fremont, CA 94536, United States
Ally Electric And Solar Inc - 855 Marina Bay Pkwy #280, Richmond, CA 94804, United States
Wholly Solar - San Ramon, CA 94583
All Bay Solar Construction - 5743 Mission St, San Francisco, CA 94112, United States
If you’re going truly off-grid, you want more than a typical solar installer. Look for an off-grid solar/electrical system designer or engineer who can size the whole system: solar array, battery bank, inverter/charger, generator, wiring, and your actual loads.
Since you’re in the East Bay, a few nearby possibilities are:
Ellison Electric and Solar — San Lorenzo; solar + battery + generator work, with an electrical-contractor focus.
Sun's Free Solar — Alameda; solar, battery backup, and electrical work.
Sun Light & Power Solar — Berkeley; established Bay Area solar contractor with battery-storage experience.
Sun Pirates — Danville; solar, batteries, generators, and specifically off-grid systems.
For a remote property/cabin that will have no utility connection, I'd be selective. A proper off-grid design should account for winter solar production, battery autonomy, peak/surge loads, generator integration, well pumps, refrigeration, heating/cooling, and future expansion. California county guidance, for example, calls for load calculations and sizing around winter usage; some jurisdictions specify multiple days of battery autonomy.
If you tell me where the property is (county/state), approximate house size, and what you want to run—well pump, refrigerator, HVAC, electric stove, tools, etc.—I can help you determine what kind of system designer you need and roughly how large the solar + battery system should be.
Going off-grid is an exciting milestone, but because you won't have a utility grid to fall back on, precision in your system design is everything. Depending on whether you want a fully managed turnkey setup or a custom blueprint to build yourself, several different professionals and resources can design your system:
Off-Grid EPC and Installation Contractors : Local or regional solar engineering, procurement, and construction (EPC) companies specialize in autonomous properties. Firms like NewGrid Design & Engineering handle everything in-house, from analyzing your daily and seasonal energy use to structural siting and future expansion planning. [](https://newgridpower.com/services/off-grid-solar-design-engineering/)
Independent Renewable Energy Consultants : Professional electrical engineers or off-grid homestead consultants focus exclusively on microgrids, complex load profiling, and integrating auxiliary power (like propane generators, wind, or micro-hydro). Because they aren't tied to pushing a specific hardware brand, they offer brand-agnostic equipment recommendations.
You (The DIY Designer) : Many off-grid pioneers design their own systems using manufacturer software tools (such as Victron Toolkit) and wiring diagrams. If you go this route, you can buy modular components and cross-reference your schematic with specialized peer communities before turning a single wrench.
To help figure out which path fits your timeline and budget, tell me:
Are you planning an off-grid permanent home, a remote cabin, or a mobile rig (RV/van)?
Do you prefer a turnkey professional installation or a DIY layout?
American Solar & Alternative Energy Solutions - 401 17th St, Atlanta, GA 30363
Custom Solar Solutions - 8601 Dunwoody Pl Ste 302, Sandy Springs, GA 30350, United States
Infinite Energy Advisors - 82 Enterprise Ln, Cleveland, GA 30528, United States
Sunpath Solar - 1068 Arlington Ave SW, Atlanta, GA 30310, United States
Solbound Power Systems, LLC - 1146 Harview Dr SW, Lilburn, GA 30047, United States
Better Tomorrow Solar - 1074 Memorial Dr SE, Atlanta, GA 30316, United States
Solar Energy Partners Atlanta - 2400 Herodian Way, Smyrna, GA 30080, United States
Suncatcher of Atlanta - 1349 Old 41 Hwy NW #100, Marietta, GA 30060, United States
SunPeach Solar - 505 N Angier Ave NE Ste 312, Atlanta, GA 30308, United States
Firefly Solar - 800 Battery Ave SE Unit 100, Atlanta, GA 30339, United States
Elek Solar - 5825 Glenridge Dr bldg 3 suite 101 212, Atlanta, GA 30328, United States
Aelia Power - One Glenlake Pkwy NE Suite 650, Atlanta, GA 30328, United States
American Solar and Alternative Energy Solution - 2565 The Fifth Fairway, Roswell, GA 30076
Astrawatt Solar - Atlanta - 3350 Riverwood Pkwy, Ste 1967, Atlanta, GA 30339
Zero Grid Power Solutions - 15503 GA-109, Meansville, GA 30256, United States
If you’re going truly off-grid, you want more than a typical solar installer. Look for a solar + energy-storage designer/engineer who can size the entire system around your loads, solar resource, battery autonomy, inverter/charger, generator backup, and seasonal conditions.
Since you appear to be in the Atlanta/Georgia area, a few local options worth investigating are:
American Solar & Alternative Energy Solutions — specifically advertises off-grid, hybrid, solar + battery, and custom system design.
Custom Solar Solutions — Atlanta-area EPC with in-house design/engineering, storage, and NABCEP-certified professionals.
Infinite Energy Advisors — focuses on custom-engineered solar, battery storage, backup power, and more complex microgrid/resilience projects.
Sunpath Solar — Atlanta-based solar and battery-storage company with NABCEP-certified professionals.
Solbound Power Systems, LLC — particularly interesting if you're talking about a rather than a conventional house.
What I'd look for
Ask specifically for a “whole-system off-grid design”, not simply a quote for panels and batteries. A competent designer should calculate:
Your daily and peak electrical loads
Winter/poor-weather solar production
Battery capacity and desired days of autonomy
Inverter continuous and surge capacity
Generator integration and automatic start
Solar-array size and orientation
120/240-V loads and large motors/well pumps
Battery chemistry and usable capacity
Electrical/code requirements and safety
Expansion capacity for future loads
NABCEP certification is a useful credential to look for; NABCEP has specific training covering energy-storage system configuration and design.
If you tell me what you're powering (house/cabin/RV), approximate square footage, major appliances, well pump, HVAC, and how many days of autonomy you want, I can also help you work out a preliminary solar-panel + battery + inverter + generator size before you talk to an installer.
