A home battery stores your solar, covers outages, and earns you $300-800/year through VPP programs. Here's the honest 2026 picture — including what changed when the federal tax credit expired.
↓ Skip to VPP programs →Section 25D — the 30% federal tax credit for home batteries — expired December 31, 2025. A typical battery system that once generated $4,000-6,000 in federal credits now generates zero. That's the bad news.
The good news: VPP (virtual power plant) programs now pay battery owners $300-800+ per year in grid earnings. State rebates in California, Connecticut, New York, and Colorado cover $2,000-16,000 of installation cost. And in California — where electricity costs $0.25-0.35/kWh under NEM 3.0 — a battery that stores midday solar and discharges at peak rates pays back in 6-9 years without any incentives.
The math changed in 2026. It didn't get worse. It got different.
Battery choice depends on your existing solar system, whether VPP matters to you, and your timeline. Here's what actually differentiates them.
BEST FOR:
New solar + battery together. Integrated solar inverter saves $1,500-3,000 on combined projects. Most widespread installer network. CalReady VPP enrolled in California.
WATCH OUT FOR:
10-year warranty vs 15-year from competitors. Requires Tesla-certified installer.
Powerwall 3 details →BEST FOR:
Existing Enphase microinverter owners. Seamless integration — one app, one warranty, one installer. Most modular option — add units over time as budget allows.
WATCH OUT FOR:
ONLY works with Enphase microinverters. If you have a string inverter: different battery.
Enphase IQ details →BEST FOR:
Adding a battery to an existing non-Enphase solar system. AC-coupled — connects to any existing inverter without a system teardown. 200A whole-home backup without sub-panel work.
WATCH OUT FOR:
Less installer availability than Powerwall. 12-year warranty shorter than Enphase.
FranklinWH details →BEST FOR:
Buyers who prioritize VPP earnings above all else. Sonnen operates the Solrite VPP program in Texas and is enrolled in ConnectedSolutions in New England. German engineering — strong quality reputation.
WATCH OUT FOR:
Highest price point. Fewer US installers than Powerwall. Better for VPP markets than pure backup-only applications.
Sonnen details →Prices are 2026 installed estimates before incentives. Get 3+ quotes. Sol Country does not sell batteries directly.
NOTE ON 2026 BATTERY PRICING: Battery prices in 2026 are affected by tariffs on Chinese-manufactured components. Sol Country's price estimates reflect mid-2026 quotes — prices are changing more frequently than in prior years. Get current quotes from at least 3 certified installers before committing. Tesla Powerwall 3 and Enphase IQ Battery are manufactured domestically and are less affected by import tariffs than some other battery brands.
VPP programs pay battery owners to allow their utility to dispatch power during grid stress events. You set the floor — your backup power is always protected first. The grid calls on what's left.
Tesla reported paying Powerwall owners $9.9 million through VPP programs in a single year — confirming the earnings model works at scale.
Source: Electrek, 2026
September 9, 2026: Tesla and Sunrun dispatched 580 MW from residential home batteries in a single event — the largest distributed power plant dispatch ever recorded.
Source: Interesting Engineering, September 2026.
| Program | States | Battery required | Typical annual earnings | How to enroll | Status | Notes | Source |
|---|---|---|---|---|---|---|---|
| ConnectedSolutions | CT, MA, RI, NH, VT, ME | Any grid-tied battery | $225/kW summer + $50/kW winter — up to $2,750/year for 10 kWh | Via your installer | Active (verify enrollment availability) | Rhode Island offers a $2,000 REF battery adder that stacks. | NuWatt Energy / NSTAR, 2026 |
| Sunrun CalReady | California | Tesla Powerwall only | Seasonal rewards (per dispatch event, May-Oct) | Through Sunrun installation | Active — 75,000 batteries enrolled | 56,000 California homes enrolled. Largest residential VPP in the US. | Sunrun / Trend Bulletin, July 2026 |
| APS Residential Battery Program | Arizona (APS customers only) | Qualifying grid-tied batteries | $600-800/year for 13.5 kWh (VPP payment + TOU arbitrage: $0.22/kWh spread) | aps.com/battery | Active | One of the most financially attractive VPP programs in the US. VPP + TOU arbitrage are additive. | AZ Energy Hub, April 2026 |
| Xcel Renewable Battery Connect | Colorado (Xcel customers only) | Qualifying grid-tied batteries | Varies by dispatch | xcelenergy.com | Active | Relevant for Colorado homeowners pairing a battery with balcony solar. | Xcel Energy, 2026 |
| Sonnen / Solrite | Texas | Sonnen eCOLINX only | ~$20/month battery subscription + VPP earnings | Through Sonnen installer | Active — 3,000+ enrolled | El Paso Electric also operates a separate Base Power residential battery pilot (up to 10MW). | IndexBox, February 2026 |
| GMP BYOD | Vermont | Any approved battery | $10,500 over 10 years ($1,050/year average) | greenmountainpower.com | Active | One of the most financially compelling state programs in the country. Green Mountain Power administers. | Green Mountain Power, 2026 |
| Minnesota Distributed Battery | Minnesota | TBD — program details pending | TBD | TBD | Approved — enrollment details pending ($430M allocated Q1 2026) | One of the largest state-level battery programs approved in 2026. Monitor at mn.gov/commerce for launch. | MN Dept. of Commerce, 2026 |
Table last verified: September 2026. VPP programs change frequently — always confirm current enrollment availability with your installer before purchasing a battery specifically for a VPP program.
California's Net Billing Tariff (NEM 3.0) pays only $0.04-0.08/kWh for solar you export to the grid — vs $0.25-0.35/kWh retail rate. A battery that stores midday solar and discharges at peak saves $0.17-0.27/kWh on every stored kWh. Without a battery: California solar economics are weak. With a battery: among the strongest in the US.
IMPORTANT — NOT ALL CA UTILITIES: LADWP (Los Angeles) and SMUD (Sacramento) are municipal utilities NOT on NEM 3.0. Their solar export rates are more favorable. Check your electricity bill for your utility name.
SGIP IN 2026: General SGIP budget: largely closed. SGIP Equity Resiliency: ACTIVE for income-qualified households in high fire-risk areas — up to $14,850+ for battery + solar combined. Verify at sgipinfo.com.
Connecticut, Massachusetts, Rhode Island, New Hampshire, Vermont, Maine. ConnectedSolutions pays $225/kW in summer and $50/kW in winter — up to $2,750/year for a 10 kWh battery. Vermont's Green Mountain Power BYOD program pays $10,500 over 10 years.
These programs stack with the $450M New England Heat Pump Accelerator and state-level battery rebates: CT: $200/kWh upfront rebate (~$2,700 for Powerwall). RI: REF grants $3,500-5,000.
Note: Connecticut Smart-E Loan is 1.99% APR as of August 2026 (not 0.99% — that rate expired). Verify current rate at ctgreenbank.com.
Xcel Energy's Renewable Battery Connect VPP is active for Colorado homeowners. Fort Collins Utilities offers up to $6,000 for battery storage paired with solar (Fort Collins Utilities customers only — separate from Xcel). Denver city offers additional battery rebates at denvergov.org.
Colorado HEAR: If your battery installation requires an electrical panel upgrade, HEAR may rebate up to $4,000 for that panel upgrade for income-qualifying households — not the battery itself, and as a rebate rather than a tax credit. Ask your installer.
The federal HEAR program (Heat and Energy Affordability Rebate) covers heat pumps, heat pump water heaters, and electrical panel upgrades — not battery storage systems. HEAR is a rebate program, not a tax credit, and it is active only in states where HEAR has launched.
However: many battery installations require an electrical panel upgrade to support the added load. HEAR covers electrical panel upgrades up to $4,000 for income-qualifying households. Note: the Section 25C tax credit, which previously covered panel upgrades, expired December 31, 2025 — there is no federal tax credit for panel upgrades in 2026.
If you're installing a battery and your home needs a panel upgrade — which is common in older homes — you may be able to use HEAR for the panel component even though the battery itself doesn't qualify.
Ask your installer: “Does this battery installation require a panel upgrade? If so, can we structure the project to access HEAR for that component?”
A Tesla Powerwall installer cannot install an Enphase battery, and vice versa. Match your installer's certification to your chosen battery platform.
MA, NH, CT, RI, ME, VT, NJ — 9 states
Handles CT ($200/kWh), VT ($10,500), RI ($3,500-5,000), MA Mass Save directly.
Partnership pending
nuwattenergy.com →Orange County, Southern California
70% battery attach rate — NEM 3.0 specialist.
ocsolar.com →All 15 Santa Clara County cities
Battery-only retrofits as a first-class service. 408-614-4451
calirollinelectric.com →Colorado Front Range
Handles both installation AND VPP enrollment.
dutchcreekelectric.com →Maryland — 6,000+ installations
NABCEP Accredited · 900+ 5-star reviews.
luminasolar.com →CA, MD, CT, VA, HI + 20 states
Runs CalReady — the largest residential VPP program in the US (75,000 batteries).
sunrun.com →Here's the honest math on a $14,000 installed Powerwall 3 in 2026:
Backup power only
If your primary goal is outage protection and peace of mind — that's legitimate. But the economics don't pencil as an investment.
NEM 3.0 California example
Still worth it in California where the alternative is exporting at pennies.
The recommended approach
This is why Sol Country recommends enrolling in VPP at installation — the same battery, dramatically better economics.
All figures are estimates based on 2026 program rates and California/New England electricity costs. Your actual savings depend on your usage, utility, and VPP dispatch frequency. Get a project-specific quote from a certified installer.
NOTE ON 2026 BATTERY PRICING: Battery prices in 2026 are affected by tariffs on Chinese-manufactured components. Sol Country's price estimates reflect mid-2026 quotes — prices are changing more frequently than in prior years. Get current quotes from at least 3 certified installers before committing. Tesla Powerwall 3 and Enphase IQ Battery are manufactured domestically and are less affected by import tariffs than some other battery brands.
Sol Country checks your state's programs, VPP eligibility, utility incentives, and certified installers in your area — in 30 seconds.
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