Independent clean-energy field guide
Build a power systemyou actually understand.
Practical guidance for solar, batteries and independent power systems—explained with clear assumptions, useful calculations and real engineering constraints.
Clear calculations Primary sources No hidden runtime tracking
Typical off-grid power flow Generation → storage → conversion → loads
Actual voltage, protection and conductor sizing depend on the equipment and installation. Use the guide and calculators for planning—not as a substitute for site-specific design.
Start here
Three decisions shape almost every small power system.
01 Choose the system voltage Understand how 12V, 24V and 48V affect current, wire size and inverter design. 02 Plan the solar source Work through array geometry, cold-weather voltage, shading and charge-controller limits. 03 Size from the load Start with daily energy and peak demand before choosing batteries, panels or an inverter.
Featured blueprint
Daily load4.8 kWh
Battery10.24 kWh
Solar3.2 kW
Architecture48V
Illustrative design assumptions from the guide—not a universal equipment prescription.
Recently updated
Practical guides for real system decisions.
Less product-list noise, more explanation of what changes the design and why.
Inverter Idle Consumption & Tare Loss: The Hidden 24/7 Off-Grid Drain
How to Size a LiFePO4 Battery Bank: Usable Capacity, C-Rates, and DOD
Detached Shed Solar System: 24V Lighting, Power Tools, and Battery Tender
Diagnosing Solar Open-Circuit Voltage with Zero Current: Troubleshooting Guide
Bifacial Solar Panels for Ground Mounts: Albedo, Height, and Snow Gain
Beyond solar
Wind and water can fill the gaps solar leaves.
Small wind and micro-hydro are highly site-dependent, but where the resource is real they can complement solar, diversify generation and reduce pressure on storage.
01 Small wind What a small wind turbine can actually produce
See how wind speed, rotor area, tower height and the Betz limit shape realistic output before you buy hardware.
02 Micro-hydro Estimate continuous power from head and flowWork from measured water flow and net head, then account for penstock and conversion losses before sizing the electrical system.
03 Hybrid generation Plan around the resource, not the equipment listCompare seasonal generation profiles and learn when wind or hydro can complement solar before simply adding more battery capacity.
System blueprints
See the whole power path, not just one component.
Blueprints connect daily loads, battery capacity, generation, inverter demand, protection and distribution into one understandable system.
Explore all blueprints → 01 Detached Shed Solar System: 24V Lighting, Power Tools, and Battery Tender A practical blueprint for electrifying a detached garden or utility shed. Sizing an 800W solar array, 24V 100Ah LiFePO4 battery, and pure sine wave inverter for tool charging. 02 Off-Grid Refrigerator Power System: Sizing for Defrost and Compressor Inrush Engineer an off-grid refrigeration system. Understand daily kWh consumption profiles, compressor Locked Rotor Amps, electric defrost heater cycles, and 12V vs 120V models. 03 Off-Grid Cabin Power Blueprint: 48V 5kW Inverter with 10kWh LiFePO4 A complete engineering blueprint for a modern 4-season off-grid cabin. Wiring schematic, 48V 10kWh server-rack battery sizing, 3kW solar array, and AC panel grounding. 04 Off-Grid Solar Well Pump System: 240V Submersibles, Soft Starters, and Tanks Engineer an off-grid solar deep-well pumping system. Compare 240V AC split-phase inverters against direct DC solar pumps, pressure tanks, and soft starter current limiters.
Browse by topic
Learn the system in pieces, then put it together.
SolarArrays, shading, wiring and MPPT sizing→ BatteriesLiFePO4, BMS, voltage and inverter demand→ BlueprintsCabins, sheds, workshops and pumps→ Remote powerStarlink, cameras, routers and telemetry→ Wind & hydroHead, flow, wind speed and hybrid generation→ CalculatorsBattery runtime, solar sizing and voltage drop→
How we work
Show the assumptions. Link the source. Say what is estimated.
Clean Power Guide uses published technical references, manufacturer documentation and transparent calculations. We distinguish engineering estimates from hands-on testing and correct material errors publicly.