How to Go Electric? Solar, Battery Backup, and EV Solutions

Another Public Safety Power Shutoff hits Sonoma County, and your fridge goes dark for two days. Or your gas bill jumps again, and you start wondering why you're paying for two utilities instead of one. Maybe you just bought an EV and you're staring at your 100-amp panel, wondering if it can even handle a car charger.

Questions like these send a lot of homeowners searching for home battery backup near me in Sonoma County. If you’re beginning to “go electric” there are three major investments to consider: solar, battery storage, and EV charging. Upgrading these in the order right saves you money and hassle. Here's how to plan each step.

Key Takeaways

●       Most Sonoma County homes can electrify on their existing 100-amp panel. A costly service upgrade isn't automatically required.

●       Solar comes first, and it should be sized for where your household is headed, not just what you use today.

●       Home battery backup (Powerwall, Enphase IQ, FranklinWH aPower) can be configured for whole-home, partial, or critical-load protection.

●       EV charging should come last, since you could start with a slow (“Level 1”) charger which plugs into any home outlet.

●       A SPAN panel or Emporia energy monitor lets a 100-amp service support more than most homeowners expect.

●       Once solar and battery are in place, electrifying the rest of the house, stove, dryer, water heater, furnace, becomes a realistic next step.

Before You Start: What Your Panel Can Actually Handle

Most homes in Sonoma, Marin, and Napa Counties run on a 100-amp electrical panel. That's often enough to run solar, a battery, and an EV charger together, with smart scheduling, efficient equipment, and app- supported, real-time monitoring doing the work.

A main panel upgrade isn't always necessary. When one is needed, usually because a panel is older, undersized, or requires updated equipment, it typically runs $3,000 to $10,000.

Heads Up: Get an Evaluation

The only way to know for sure is a full evaluation of your panel, roof, and household's current and future energy plans.

Step 1: Start With Solar, Sized for Where You're Headed

Solar sizing depends on how much electricity your household uses, not your square footage. A 1,500-square-foot home with 2 EVs and a pool needs a bigger system than a 3,000-square-foot home with gas appliances and no air conditioning.

Before locking in a system size, think about where your household is headed over the next 5 to 10 years:

●       Adding an EV, or a second one

●       Swapping a gas furnace for a heat pump, which runs 2 to 4 times more efficient than gas heating and handles cooling too

●       A household that's shrinking (kids heading off to college) or growing (aging parents moving in)

●       New loads like a pool, hot tub, or ADU

Pro Tip

Undersizing solar is one of the most common regrets homeowners have. It's much cheaper to add a bit of extra capacity now than to redesign a system in 3 years once you've added an EV or a heat pump.

Step 2: Add Home Battery Backup

Under NEM 3.0, utilities pay very little for extra solar power sent back to the grid during the day. A battery lets you store that energy for night use, when rates are highest, and keeps your lights on during a Public Safety Power Shutoff (PSPS) event.

A few brand options Amy's installs:

●       Tesla Powerwall: High quality, lower cost. widely installed, works for whole-home or partial backup.

●       Enphase IQ Battery: modular, and pairs well with Enphase microinverter solar systems.

●       FranklinWH aPowerAnother popular option, works well with a generator

●       Sigenergy: modular, future potential for V2X (vehicle to grid) charging, good price point

Backup can also be configured a few different ways, depending on budget and how much protection you want:

●       Whole home backup: powers everything during an outage. You’ll need to manage your usage during an outage.

●       Partial home backup: powers selected circuits or areas.

●       Critical load backup: powers just the essentials, refrigerator, lights, medical equipment.

●       Generator integration: pairs a battery with an existing generator, or replaces one.

Adding a battery typically adds $14,000 to $16,000 to a solar project, depending on capacity. If you've been comparing home battery backup near me in Sonoma County, this is usually where the decision comes down to your budget and how much of your home you want protected when the power goes out.

Step 3: Add EV Charging

Once solar and a battery are in place, an EV charger is the last piece. Amy's installs Tesla and Wallbox chargers, both compatible with most electric vehicles on the road.

The math on EVs is worth knowing, especially if gas prices are part of what's pushing you toward electrification. A gas car converts about 17% of its energy into actual movement. An EV on the grid runs closer to 34%, already twice as efficient. Charge that same EV from your own solar, and efficiency climbs to around 73%.

EV chargers pull the most power of any single device in your home, which is why smart load management matters on a 100-amp panel. Most Tesla and Wallbox chargers let you dial the rate down, say from 48A to 16A, during peak hours, then run at full speed at opportune times.

Common Mistakes to Avoid

●       Sizing solar for today's bill only. Add an EV or heat pump a year later, and the system falls short.

●       Skipping battery backup over sticker shock, without weighing NEM 3.0's lower export credits or PSPS risk.

●       Assuming a panel upgrade is required before any of this is possible. Most 100-amp homes don't need one to get solar and/or a battery.

●       Running the EV charger at full amperage during dinner-time peak hours, alongside the oven, dryer, and AC.

●       Skipping a monitoring tool, leaving no visibility into which circuits draw power when it matters most.

Pro Tips

●       Smart scheduling: stagger the dishwasher, laundry, and EV charging instead of running them together.

●       Circuit-level monitoring: a SPAN or Emporia monitor tracks usage by circuit and can shut off lower-priority loads to stay within capacity.

●       Adjustable EV charging rate: dial the charger down during peak hours, then back up overnight.

●       Time big loads to daytime solar production to maximize how much of your own power you actually use.

DIY vs. Calling a Professional

Homeowners can usually handle day-to-day management themselves: setting a charging schedule in the EV charger's app, adjusting priority settings on an energy monitor, and tracking usage trends over time.

Call a professional for anything involving the electrical system itself: solar design and installation, battery installation (permitting and code compliance included), EV charger installation, and the sizing calculations that account for future loads. Amy's evaluates your panel, roof, and household plans together, so the system you install today still fits the home you'll have in 5 years.

Ready to Go Fully Electric?

Once your solar and battery are in place, you're set up to electrify the rest of the house too, the stove, the dryer, the water heater, the furnace. Amy's Roofing & Solar evaluates your panel capacity, roof, and household goals, then builds out solar, battery backup, and EV charging in the order that makes sense for your home.

Call: (707) 981-9801

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Related reading:

●       Is Your Roof Ready for Solar Panels? Here's How to Tell

●       How to Maximize Your Solar Installation ROI in Sonoma County

●       Should I Electrify My Home?

Frequently Asked Questions

Do I need a panel upgrade for solar, battery, and an EV charger?

Most 100-amp panels can handle all 3 with smart scheduling, efficient equipment, and a monitor like SPAN or Emporia. When an upgrade is genuinely needed, it typically runs $3,000 to $10,000, but it's not a given for every home.

What size solar system do I actually need?

It depends on your household's energy use, not your square footage, plus where you're headed over the next 5 to 10 years: an EV, a heat pump, or a change in household size. Amy's builds a custom sizing plan around your current and future usage.

Tesla Powerwall vs. Enphase IQ vs. FranklinWH aPower, which is the best fit?

It depends on your existing solar equipment and backup goals. Enphase IQ pairs naturally if you already have an Enphase microinverter solar system, Powerwall is widely installed and flexible for whole or partial backup, and FranklinWH is sometimes preferred for rural areas that have an existing generator. Amy's can walk through which fits your plans and existing setup.

How do I find home battery backup near me in Sonoma County that actually fits my home?

Call Amy's for a free estimate. The team evaluates your panel capacity, roof, and current and future energy needs before recommending a battery brand and backup configuration.