Solar Monitoring App Comparison: SoCal 2026

Your solar monitoring app is the only window you have into whether your system is doing what you paid for — catching shading problems, confirming battery dispatch timing, and verifying your bill credits are what they should be. Under Southern California's Net Billing Tariff (commonly called NEM 3.0), that window became a lot more consequential: a poorly timed battery discharge or an undetected underperforming panel now costs real money every month, not just at an annual true-up. The app you use is determined by the hardware your installer put on your roof, so this is less a shopping guide than an honest orientation to the monitoring stack you are already living with — or the one you are about to commit to for the next 25 years.

At Anca Solar (CSLB #873768), we install and monitor both Enphase and SolarEdge systems daily. We use these apps to troubleshoot remotely before rolling a truck. We see what homeowners see in their dashboards, and we know where each app is genuinely useful and where it is marketing gloss. This post covers four monitoring ecosystems — Enphase Enlighten, mySolarEdge, FranklinWH, and the sonnen app — with their verified app store ratings, core data screens, battery control features, and the specific moments when active monitoring makes or costs you money in Southern California.

"Under NEM 3.0, export credits can be anywhere from 60% to 80% less valuable than they were under NEM 2.0." — Enphase, enphase.com, January 2024. That gap is exactly why monitoring battery dispatch timing is no longer optional for SoCal solar owners.

What your solar monitoring app actually shows — and why it matters more now

Every monitoring app in this comparison shows you four core data streams: solar production (how many watts your panels are generating right now), home consumption (how many watts your household is drawing), battery state of charge (what percentage of your stored energy remains), and grid import or export flow (whether you are pulling from or pushing to the utility grid). Those four numbers, updated in near real time, are the foundation. What separates the apps is the depth below that foundation — how granular the production data gets, how finely you can control battery dispatch, and how intelligently the system responds to your utility rate structure.

Southern California homeowners under the Net Billing Tariff face a specific problem that did not exist under NEM 2.0: midday solar exports earn far below retail rate, while late-afternoon and evening electricity consumption costs retail or more. The financial logic of the NBT demands that solar energy produced at noon be stored, not exported, and then discharged between roughly 4 p.m. and 9 p.m. when grid import rates peak. A monitoring app that only shows you what happened — rather than helping the system do the right thing automatically and alerting you when it does not — is a dashboard, not a financial tool.

The CPUC reports that nearly 70% of NBT customers paired batteries with their solar by the end of 2024. Those homeowners need monitoring that goes deeper than production charts. The analysis below addresses each app on that standard.

A note on utility territory: SCE vs. LADWP

Southern California is not a single utility market. Homes served by Southern California Edison follow the CPUC's Net Billing Tariff and are placed on the TOU-D-PRIME rate structure — with significant peak and off-peak differentials that make battery dispatch timing critical. Homes served by the Los Angeles Department of Water and Power follow LADWP's separate NEM program, which operates under its own rules and rate structure, not the CPUC's NBT. If you are in the City of Los Angeles (which LADWP largely serves), your rate structure differs from SCE customers. The battery dispatch and TOU optimization features discussed in this post are most directly relevant to SCE customers on TOU-D-PRIME, though the core monitoring functionality applies regardless of utility.

The four apps: what they show, what they control, and what the ratings mean

The hardware installed on your home determines which app you use — there is no mixing and matching. Enphase microinverter systems use Enphase Enlighten. SolarEdge string inverter systems with power optimizers use mySolarEdge. FranklinWH aGate home power systems use the FranklinWH app. sonnen battery systems use the sonnen app. Each ecosystem is closed, so the correct framing is not "which app should I download" but "what monitoring capabilities does this hardware give me."

Enphase Enlighten: panel-by-panel precision at scale

Enphase Enlighten carries a 4.6-star rating based on 90,000 iOS ratings — by far the largest review sample of any solar monitoring app. That number reflects Enphase's substantial installed base of microinverter systems, and a review count that large converges quickly toward a reliable signal. The 4.6 rating tells you most Enphase homeowners are satisfied with what the app does. The 90,000 number tells you what "most Enphase homeowners" actually means at scale.

What makes the Enphase app different from all others in this comparison is module-level monitoring. Because each Enphase panel has its own microinverter, the app can show you individual panel output. The ARRAY tab, per Enphase's own documentation, lets you "tap any panel in the layout to see individual performance metrics." This is not a cosmetic feature — it is the primary tool for catching shading problems, bird droppings, soiling, or hardware degradation at the panel level before they become system-level problems. Under NEM 3.0, a single underperforming panel that goes undetected for months costs you both in lost production and in dispatch timing inefficiency. The STATUS tab provides second-by-second power flow updates across solar production, live consumption, grid status, and battery charge level, refreshing every 5–15 minutes on a Wi-Fi or Ethernet-connected gateway.

For homeowners with an Enphase IQ Battery, the app controls three dispatch profiles. Self-Consumption stores midday solar for use when production falls short. The AI Optimization profile — Enphase's most directly NEM 3.0-relevant feature — uses machine learning to manage battery charge and discharge around your utility's TOU rate structure, automatically scheduling discharge during high-rate windows without manual intervention. Full Backup mode reserves battery capacity for grid outages. Storm Guard monitors National Weather Service alerts and "automatically charges batteries to full capacity when severe weather is detected," which is directly relevant for SoCal homeowners in areas served by SCE's Public Safety Power Shutoff program. For a deep dive on the IQ Battery hardware itself, see our Enphase IQ Battery 5P guide for Southern California.

The app also integrates EV charging scheduling for compatible chargers, allowing you to set charging windows that avoid on-peak utility hours. Alerts flag unexpected performance drops by component, letting you — or your installer — identify whether a problem is a panel, a microinverter, or a gateway connectivity issue before it compounds.

One practical note: all Enphase monitoring depends on the IQ Gateway maintaining an active internet connection. If your Wi-Fi password changes or your router is replaced without updating the gateway, the app stops receiving cloud-side data until the connection is re-established. Your installer — and Enphase's network operations center — monitors this remotely for systems registered in the Enlighten platform, which means homeowners are not always the first to know about a connectivity dropout.

mySolarEdge: optimizer-level monitoring and TOU control

The mySolarEdge app carries a 4.5-star rating from 19,000 iOS ratings — a strong result that reflects a healthy installed base of SolarEdge string inverter systems across the country. The rating and feature set reflect the current App Store listing; we are citing the app's current capabilities, not a specific version date.

SolarEdge systems pair a central string inverter with individual power optimizers at each panel. The optimizer architecture gives mySolarEdge something most string inverter apps cannot offer: optimizer-level monitoring, which lets you identify underperforming panels even though the system uses a single central inverter. The App Store description for mySolarEdge describes the ability to "identify underperforming modules with a holistic easy-to-read view of their entire PV layout." If one panel is shaded or degraded, the optimizer data surfaces it — which is the key feature gap between string systems without optimizers and microinverter systems. That said, mySolarEdge's panel-level data reflects the optimizer output rather than a true individual microinverter reading, which is a meaningful architectural distinction. For a full explanation of the difference, our post on microinverters vs string inverters for Southern California covers it in detail.

The app's monitoring data updates approximately every 15 minutes under normal connected conditions, per SolarEdge's support documentation. If data has not refreshed in more than 24 hours, SolarEdge recommends checking system communication — which is the appropriate first diagnostic before escalating to your installer.

For homeowners with a SolarEdge Home Battery, the app provides battery mode controls including a pause mode and the ability to configure storage behavior around your utility rate schedule. Weather Guard — SolarEdge's storm-preparation feature — receives National Weather Service alerts and initiates pre-event charging of the battery from solar or grid in advance of a detected severe weather event, giving homeowners additional lead time before a possible grid outage or PSPS event. The "My Savings" tab shows monthly and annual savings from solar consumption and exports — a useful financial summary, though the accuracy of savings estimates depends on whether your correct utility rate plan has been configured in the app.

The app also supports remote smart home device control and EV charging management for compatible devices, giving SCE customers on TOU-D-PRIME a mechanism to shift discretionary loads away from on-peak windows. For more on the solar panel installation options we offer across Los Angeles County, including SolarEdge systems, see our services page.

FranklinWH app: whole-home energy control through the aGate system

The FranklinWH app carries a 3.4-star iOS rating from 83 ratings. That is a very small sample — 83 reviews does not give you the statistical confidence of 19,000 or 90,000 — and a 3.4 average reflects a real mix of user experiences, though you cannot draw firm conclusions from a thin dataset. What the rating count does tell you is something accurate: FranklinWH has a smaller installed base than Enphase or SolarEdge in the U.S. residential market, and the app is newer.

The FranklinWH app monitors the aGate energy management system — the hardware gateway that coordinates between your solar array, the FranklinWH battery bank, the grid, and optional generator input. The app provides 24-hour monitoring of solar, grid, battery, and generator supply alongside home consumption, with usage analytics across daily, monthly, and yearly views. Three power modes are configurable from the app: Time-of-Use (TOU), Self-Consumption, and Emergency Backup.

The feature that stands out for SoCal homeowners is what FranklinWH calls "smart TOU with a simple paper scan." Rather than requiring you to manually navigate CPUC rate schedule tables, the app allows you to photograph your SCE or LADWP utility bill, and the system automatically reads the rate schedule and configures TOU dispatch strategy accordingly. For homeowners who have never navigated a TOU-D-PRIME rate schedule — and most haven't — this is a genuine usability advantage. SCE's peak and off-peak windows shift seasonally and differ by zone, which makes manual configuration error-prone. A bill scan that auto-populates the schedule reduces the chance of misconfigured dispatch.

Storm Hedge performs a similar function to Enphase's Storm Guard and SolarEdge's Weather Guard: it "receives National Weather Service alerts to automatically activate Emergency Backup mode and fully charge batteries before weather events." For homeowners with multiple FranklinWH battery units, the app also controls up to three optional Smart Circuits — dedicated outlets for high-draw appliances like air conditioners and EV chargers — which can be remotely toggled from the app to manage load during an outage or high-rate period.

One practical note: the app is named "FranklinWH" and monitors the aGate system. There is no separate "Power Hub" app in the App Store or on FranklinWH's website — the aGate is the hardware gateway, and the FranklinWH app is what controls it.

sonnen app: battery-centric monitoring with community grid participation

The sonnen app has an iOS rating of 3.6 stars from 19 ratings — a sample too small to be statistically meaningful. The more representative signal comes from Google Play, where the sonnen app carries a 3.5-star rating from 1,380 reviews. That is a credible dataset. A 3.5 rating from over a thousand reviews reflects genuine mixed sentiment, which we will characterize honestly: sonnen's app is functional for core monitoring tasks but has not generated the enthusiastic ratings that Enphase Enlighten has.

The sonnen app (updated April 5, 2026 on iOS, confirming active development) provides real-time energy flow visualization across battery, PV system, and EV charger, along with historical consumption and generation data. The app offers both basic and professional display modes — a useful option for homeowners who want clean at-a-glance summaries without technical detail, and for those who want the full data view. Backup buffer configuration — setting a minimum state of charge to hold in reserve for outages — is adjustable from the app.

The feature that distinguishes sonnen from the other three apps in this comparison is the sonnenCommunity and Virtual Power Plant integration. sonnen reports that "around a quarter of a million people use sonnen products and are part of our sonnenCommunity," a platform through which excess solar energy can be shared virtually among members and home batteries pool to support grid stability. In California, participation in virtual power plant programs can generate additional bill credits or incentive payments — an emerging revenue stream that the other apps in this comparison do not offer through their own ecosystems. If VPP participation and community energy are priorities for you, sonnen's monitoring stack includes that integration natively in a way that Enphase, SolarEdge, and FranklinWH apps currently do not.

The sonnen app also provides access to details on sonnen energy contracts, which is relevant for customers enrolled in specific sonnen energy rate programs available in some U.S. markets.

Side-by-side: what each app shows and controls

The table below summarizes the verified features across all four monitoring ecosystems. Features marked as confirmed are drawn from App Store listings and official vendor documentation accessed in May 2026. Features marked as not available are absent from current documentation — they may exist in web portal form but are not confirmed in the mobile app.

One observation worth making directly: all four apps depend on cloud infrastructure. Per the U.S. Department of Energy's FEMP guidance on solar monitoring platforms, these systems gather data through cloud-hosted services, and the DOE recommends that monitoring deployments "provide the best available cybersecurity" for data in transit. For homeowners, the practical implication is straightforward: if your home internet goes down, your monitoring app goes dark. Your solar and battery hardware continues to operate — panels produce, batteries store and dispatch — but the app cannot show you real-time data and remote troubleshooting by your installer is impaired. This is true for all four ecosystems in this comparison. It is not a reason to avoid these products, but it is worth understanding that "monitoring" is a cloud-dependent service layered on top of the hardware, not a function of the hardware itself.

When monitoring catches money left on the table in SoCal

The financial case for active monitoring under the Net Billing Tariff is not abstract. The CPUC's own analysis found that solar-plus-battery homes are expected to save approximately $136 per month versus approximately $100 per month for solar-only homes — a $36 monthly gap that represents the value of correctly dispatching stored energy into the evening peak window. That gap only materializes if the battery is actually dispatching correctly, which means your monitoring app needs to be showing you — or your installer — whether it is.

Underperformance detection: where panel-level data earns its keep

Enphase Enlighten's module-level monitoring is the most powerful tool available for catching underperformance early. A panel that is shaded by a new tree branch, fouled by bird droppings, or showing early degradation will show up as a production outlier in the ARRAY tab — often before a homeowner would ever notice a change in their monthly bill, which is diluted across the whole system. SolarEdge's optimizer-level monitoring in mySolarEdge provides similar detection capability: the optimizer data identifies which panel is underperforming, even through the string inverter architecture.

For FranklinWH and sonnen users, underperformance detection is more limited at the panel level through the mobile app. These systems are designed around battery and whole-home energy management rather than panel-level diagnostic depth. If shading analysis or panel-level troubleshooting is a priority, the inverter choice — microinverters or optimizers — is the decision that determines what your app can show you, not the app itself.

Dispatch timing: the monthly financial checkpoint

Under the NBT's monthly billing cycle — unlike NEM 2.0's annual true-up — you see the financial result of your battery dispatch strategy every month. If your Enphase AI Optimization profile is incorrectly configured for your rate plan, or if your mySolarEdge battery mode was accidentally reset to a default that does not match your TOU schedule, or if your FranklinWH app scanned the wrong bill page and set the wrong rate window, you will see the difference on your monthly statement before the error compounds. Monthly billing is a forcing function for active monitoring: there is no 12-month buffer to average out a bad dispatch configuration.

The correct habit for SoCal solar owners under the NBT is to open your monitoring app after your monthly utility statement arrives and cross-check whether your battery was dispatching during the rate window your TOU plan defines as on-peak. If your app shows battery discharge concentrated in the wrong hours — mid-morning instead of late afternoon, for example — that is the signal to call your installer for a dispatch configuration review.

At Anca Solar, we do this review as part of our ongoing customer service for systems we install. If you installed your system with a different contractor and are unsure whether your dispatch is optimized for your rate plan, schedule a free solar consultation with Anca Solar — we can walk through your monitoring data with you and identify whether there is a configuration correction worth making.

Pre-event charging: storm prep and PSPS readiness

All four apps support some form of automatic pre-event battery charging. Enphase's Storm Guard and FranklinWH's Storm Hedge both integrate directly with National Weather Service alerts. SolarEdge's Weather Guard provides a comparable NWS-triggered pre-event charge — useful for multi-day storm systems that can cut power for extended periods in foothill and mountain-adjacent communities. sonnen's app provides manual battery state-of-charge configuration; for homeowners in PSPS-prone areas the level of automation versus manual control across these four systems varies, so it is worth confirming the specific behavior with your installer before choosing.

For SoCal homeowners in high fire threat districts — the communities above Pasadena, the hills in Glendale and Burbank, foothill areas from Claremont to Glendora — SCE's PSPS program can take the grid down with relatively short notice during red-flag wind events. Automatic pre-charge features are not a luxury in these areas: they are the mechanism that determines whether your home has a full battery before the shutoff, or a partially depleted one.

For more on how battery storage fits into a SoCal resilience strategy, see our solar and battery installation services for Los Angeles and our overview of Anca Solar's approach to system design on our about page.

What this means for Southern California homeowners

If you are choosing between Enphase and SolarEdge for a new installation — or evaluating whether to add a FranklinWH or sonnen battery to an existing system — here is what the monitoring comparison actually tells you.

Enphase Enlighten is the strongest monitoring app in this group by any objective measure: the highest rating, the largest user base, the most granular panel-level data, and a TOU optimization profile that is specifically documented for California's Net Billing Tariff. If monitoring depth and diagnostic capability matter to you — and under NEM 3.0, they should — Enphase's microinverter architecture delivers it. The trade-off is that you are fully committed to the Enphase ecosystem; switching inverter hardware means switching monitoring platforms.

mySolarEdge is a close second on user sentiment and delivers optimizer-level monitoring that bridges most of the gap with true microinverter systems. Weather Guard's NWS-triggered pre-event charging is a meaningful storm-prep feature for PSPS-prone areas. The iOS app update cadence is the one question mark: the most recent iOS version date in App Store data is from April 2024, which is worth noting even though the product continues to be actively supported through the SolarEdge web platform and monitoring infrastructure.

• FranklinWH app is best suited for homeowners who have selected the FranklinWH aGate system for its battery specs or whole-home power capacity, and who want a straightforward TOU configuration experience. The bill-scan setup feature is the most practical approach to TOU configuration we have seen in this category — particularly for SCE customers navigating TOU-D-PRIME's seasonally shifting peak windows. The thin iOS review count (83 ratings) reflects an early installed base, not necessarily poor engineering.

• sonnen app is the right choice if VPP participation and community energy sharing align with your priorities. The 3.5-star Google Play rating from 1,380 reviews is the most candid user signal in this comparison for sonnen's monitoring experience. It is functional for core tasks — production tracking, battery management, backup buffer setting — but it has not generated enthusiastic adoption among its user base the way Enphase Enlighten has. If you are primarily purchasing a sonnen battery for its VPP and community features, the app's monitoring limitations are a reasonable trade-off.

"The monitoring app is not the product you are buying — it is the relationship you are agreeing to have with your hardware for the next 25 years. Every system we install at Anca Solar, we explain to the homeowner what their app shows, what it does not show, and what to look for each month when the utility bill arrives. That conversation is part of the installation." — Carlos Vega, Founder of Anca Solar

Regardless of which monitoring ecosystem you are in, the habits are the same: open the app when your monthly bill arrives, verify your battery was dispatching during the right windows, check for any production alerts, and note whether your system is exporting primarily in the evening rather than at midday. That monthly discipline, supported by whichever monitoring tool your hardware provides, is the difference between a solar system that performs to its financial potential under the NBT and one that underdelivers quietly for years.

Anca Solar (4519 Westdale Ave, Eagle Rock, CA 90041, CSLB #873768) designs and installs solar and battery systems across the Los Angeles Basin, Orange County, and Ventura County. We have worked with all four of the monitoring ecosystems described in this post, and we can help you evaluate which system and monitoring stack is the right fit for your home, roof, utility territory, and energy goals. Schedule a free solar consultation with Anca Solar — no obligation, and we will walk through the monitoring data from your current system if you already have solar installed.