Solar Power Basics for Homesteads

How does a solar electric system work?

Solar panels turn sunlight into direct current electricity. An inverter converts that to the alternating current most appliances use. A grid-tied system sends extra power to the utility and draws from it when the sun is down. An off-grid system stores power in batteries, and often adds a generator for long cloudy stretches.

A third type, grid-tied with battery backup, keeps essentials running in an outage. Each type has a different cost, complexity and set of rules.

Think about the long view, too. Panels last for many years, but inverters and batteries wear out sooner and need replacement in the plan. Ask each installer what parts are expected to be replaced and when, and what service looks like after the warranty ends.

What should I check about my site?

Sun exposure drives output. Look at where trees, buildings and hills shade the roof or ground during the day and across seasons. Consider roof age and condition, the direction and tilt available, and space for a ground mount. Snow, wind and hail loads matter too.

Walk the site at different times of day. Photographs taken in winter and summer help an installer understand shading.

Consider how the system fits farm work. A pump house, a poultry barn or a shop may be better served by a small, separate system than by one large array on the house, and a phased approach lets you learn before you commit to everything.

• Shade from trees and buildings through the year.
• Roof condition and age before mounting panels.
• Ground space, soil and access for a ground mount.
• Distance from panels to the house or barn.

Do I stay on the grid or go off it?

Connecting to the grid is often simpler and less expensive than a full battery system, but utility rules vary widely. Ask your utility about interconnection, metering and any fees or approvals. Going off-grid means you size and maintain everything yourself, including storage and backup.

Do not assume that a past neighbor's arrangement applies to you. Ask your utility and local permit office directly.

What are the cost categories?

Costs include panels, mounting, inverter, wiring and protective devices, batteries if used, permits and inspections, installation labor and later maintenance or replacement. Incentives and tax treatment change over time and vary by location, so do not rely on a rule from memory. Ask a tax professional and check official sources for what applies.

Collect several written quotes. Ask each installer to list equipment, warranties, expected output, what the quote does and does not cover, and who handles the paperwork.

What safety and permit points matter?

Solar wiring carries voltage even in daylight. Work on panels, wiring and inverters belongs to qualified installers and electricians. Roof work adds fall risk, so use proper fall protection or hire it out.

Ask your local building and permit office what approvals are needed, whether inspections are required and whether your insurer needs to be told. Rules vary by state, county and town.

How do I start without overspending?

Begin by reducing waste. Lower loads make any system smaller and cheaper. Then list your loads, review a year of electric bills, and ask installers to size a system against them. Compare options, including a small system for one building or pump, before committing to the whole property.

A county extension office or a state energy office can often point you to unbiased information. Be wary of anyone who pressures you to sign quickly.

What questions should I ask an installer?

Ask how long the company has been working in your area, whether the installers are licensed where required, and who will handle permits and utility paperwork. Ask for references from nearby customers and, if you can, visit an installed system. Ask what the warranty covers and who services it.

Ask for the design assumptions: how much sun, how much shading, what losses and what output they expect. Ask how the system behaves in an outage and what it will and will not power. Ask about monitoring, so you can see whether it performs as promised.

Take your time. Compare at least three written proposals and read the contract carefully. Walk away from pressure to sign today, and ask a trusted electrician or your state energy office to review anything you do not understand.

Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.