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Can a house run on solar power alone?

Owning a house that runs entirely on solar power is most definitely a possibility! With the help of solar panels and solar batteries, making your home a solar-powered property has never been cheaper. The cost of installing a solar energy system has dropped drastically in the past 20 years because of the fast improvements in technology. Even though it may be cheaper than ever, there are still a few necessities to make this dream of running your home on solar power alone, a reality.

First, you will need to understand how much energy you use on average per month.

This will allow you and your contractor to know how much energy your panels may need to generate to keep your home powered throughout the month. When considering the amount of energy generated by your panels, it is also smart to understand that some months may be better than others for generating power. This is where solar batteries can play a crucial role.

When the sun doesn’t shine as bright or as long as usual, it is good to utilize your solar batteries. Solar batteries allow users to store excess energy gained on those long sunny days to be used later. This is key because if you have no energy stored, you will be required to use energy from the grid to power your home.

Secondly, the climate you reside in also plays a crucial role in making this dream a reality.

If you live in a cold, cloudy place, it may be more challenging to run your home entirely on solar. For example, while living in the Pacific Northwest during the winter months, you may go weeks without seeing direct sunlight. Although, if you live in the southwestern states like California or Arizona, you may go weeks without having an overcast day! These differences in climate play a critical factor in the ability to jump on the solar bandwagon and cut ties with the energy company.

Third, the surrounding trees and houses located near your home.

These can hinder the amount of energy that your solar panels can generate throughout the day. If you have a huge tree blocking your panels for a third of the day, this can drastically change the amount of energy stored.

Make it Possible

Don’t let any of these three factors scare you away because running your home on solar alone has never been easier. With the help of solar estimators and countless numbers of installations in your general area, solar contractors understand the ins and outs of what may be needed to allow you to make this leap to solar energy.

The key to this possibility is the number of panels and solar batteries installed on your home. The critical part is the use of solar batteries; without a battery, no excess energy can be stored to use later. Semper Solaris is a Tesla Powerwall certified installer, and with powerful batteries such as Tesla Powerwall out on the market, this possibility is closer than you think.

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*No hard credit pull. Must purchase $15,000 or more to qualify for $1,000 rebate. For SDCP Rebate: Must be an active SDCP residential customers and must have contract dated 09/30/25 or after to qualify. Entire battery system must be a new system. Batteries must be fully charged by on-site solar. Battery cannot simultaneously be participating in any other active demand response programs. All projects are subject to a sizing tool to determine if there will be enough excess solar to charge the proposed battery system. **Savings based on size of roof. Cool Roof upgrade with roof replacement only. ***Minimum of 4 windows. ^On approved credit. Monthly payment is based on purchase price alone excluding taxes. Other transactions may affect the monthly payment. Minimum of 4 windows. 6.99% for 15 years subject to change. †Must purchase a complete heating system. μQualifying purchases are eligible for the $100 rebate on sliding patio doors. Qualifying purchases are eligible for the $50 rebate on black or bronze laminate windows only. Qualifying purchases are eligible for the $30 rebate on white or tan vinyl windows only. ‡Present this at the time of your appointment. §Unlimited referrals accepted. Maximum awarded amount per new customer is $550 for referrals that purchase. Referral name must be supplied by referrer, referral amount paid after completion of the installation and payment.

For all offers: Cannot be combined with any other offers. New customers only, some restrictions apply. See here for more information on warranties. Semper Solaris is the fastest of installers that installed 10,000+kW in the 12 months prior according to the most recent Ohm Analytics California Monthly Report. Offer Expires 12/31/25

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