Showing all 48 articles
A 6 kW array needs roughly 300 square feet of usable, unshaded roof with modern panels. Here's how to measure your roof from the ground, account for setbacks and shade, and validate the result with free tools like PVWatts before an installer ever visits.
Read moreHow to build an honest solar payback estimate for a high-consumption home — sizing around EV charging and heat pump loads, and why tiered utility rates usually improve the math.
Read morePowerwall 2 and the original Generac PWRcell are both superseded products — here's how to compare them fairly if you're buying an installed home, a discounted system, or weighing them against their successors for wildfire outage backup.
Read moreNEC 705.12's 120% busbar rule quietly caps how much solar you can backfeed into your main panel. Here's what the rule actually says, a worked 200A-panel example, and your options when your planned system doesn't fit.
Read moreLG exited the solar panel business in 2022, but millions of NeON R panels are still on roofs. Realistic degradation rates, a 25-year output table, how your panels stack up against what's sold today, and what to monitor.
Read moreAn honest comparison of Enphase IQ8 microinverters and the Tesla string inverter for battery-less grid-tie solar: efficiency, warranties, monitoring, outage behavior, and which roofs favor each.
Read moreCalculate your solar roi powerwall inclusion for maximum savings
Read moreA step-by-step worked example of solar payback for night-heavy households on time-of-use rates — why the standard ROI math fails, and how batteries change the answer.
Read moreDIY solar kits advertise a tempting per-watt price, but permitting, interconnection, engineering stamps, failed inspections, monitoring, and warranty gaps can erase the savings. Here's the honest cost list.
Read moreDiscover the best solar battery for cold weather performance in our review of Powerwall, Enphase, and LG Chem solar battery cold weather review
Read moreAn honest comparison of microinverters and power optimizers for home solar — how each works, costs, warranties, failure modes, and which roofs each one fits.
Read moreA plain-English explanation of DC-coupled vs AC-coupled battery integration — how each architecture routes power, what it means for inverter sizing, retrofits, and adding capacity later.
Read moreLearn about solar panel shading analysis and mitigate its impact
Read moreHow Tesla's Powerwall 3 and Generac's PWRcell actually differ for homes with frequent, long outages — architecture, expansion, generator integration, and the spec-sheet questions to verify before you sign a contract.
Read moreFollow our net metering enrollment guide for solar customers to save on energy bills
Read moreMost US homes have single-phase service, which makes a 3-phase inverter irrelevant. How to check what you have, when 3-phase genuinely matters, and an honest decision table for the rare homes that qualify.
Read moreA 6 kW array plus a Powerwall or a 9 kW array with no battery — an honest comparison of upfront cost, production, backup, and payback for a typical 3-bedroom home, and why net metering decides it.
Read moreAn honest look at whether Tesla solar is the most cost-effective choice for new construction — what genuinely gets cheaper on a new build, what doesn't, and how Tesla's installer model affects the answer.
Read moreFull-retail net metering makes batteries hard to justify — but a lousy buyback rate flips the math. How self-consumption arbitrage works, a worked example with real arithmetic, and a checklist for whether it pencils out for you.
Read moreHow to evaluate grid-tie solar when your utility's peak rates are low in summer and your heaviest usage lands in winter — net metering rules, sizing math, and when to walk away.
Read moreTesla doesn't publish a supported consumer API for solar data. What the Tesla app really gives you, how the unofficial API ecosystem works, and how to build your own energy reports without handing your credentials to strangers.
Read moreForget invented dashboard scores. Learn how to calculate self-consumption rate and self-sufficiency rate from any solar monitoring app's production, import, and export numbers — and how to improve both.
Read moreA practical diagnostic workflow for underperforming solar — clear-day tests, day-over-day baselines, and same-orientation comparisons — plus a symptom-to-cause table so you know what to check before calling your installer.
Read moreA practical sizing walkthrough for hybrid solar inverters: DC-to-AC ratio, battery coupling (Powerwall 2 vs. 3), EV charging loads, and backup capacity — with worked examples.
Read moreWhat solar monitoring alerts actually exist in the Tesla, Enphase, and SolarEdge apps, which ones signal real problems, and how acting on them protects production and inverter health.
Read morePrepare your roof for solar panels with our inspection, reinforcement & permitting checklist for a smooth solar installation roof prep process
Read moreAn honest look at solar tilt and orientation for winter production — why your roof pitch is usually fixed, what you can actually choose, and how to weigh the seasonal tradeoffs with PVWatts.
Read moreThe honest physics of solar panel hot spots — how shading, soiling, and cell damage create localized heating, what bypass diodes actually do, and sensible prevention for dusty, windy sites.
Read moreHow to lay out solar panels on a complicated roof: mapping obstructions and fire-code setbacks, modeling shade in SketchUp, and comparing roof planes with PVWatts before an installer ever climbs up.
Read moreA practical load-shifting playbook for solar homeowners on time-of-use rates: which appliances to move, when to run them, and how to keep the grid meter still during peak-price hours.
Read moreA careful guide to sizing solar-plus-battery backup for oxygen concentrators, CPAPs, and other home medical devices — including a load-inventory worksheet and the honest limits: life-critical equipment still needs a UPS, redundancy, and a plan made with your care team.
Read moreA failed microinverter only costs you one panel's output — which is exactly why it's easy to miss for months. Here's how to read per-panel data, what each symptom means, and a five-minute weekly check routine.
Read moreCompare Tesla solar inverter and Enphase IQ8 for homes with Powerwall backup needs
Read moreA practical decision guide for roofs with multiple orientations: how string inverters with optimizers and microinverters each handle mismatch, shade, monitoring, and failures — and which situations favor each.
Read moreHow annually declining net metering export rates erode solar savings — and how battery storage shifts the economics back in your favor, with clearly worked examples.
Read moreAn owner's guide to the Tesla Powerwall 2 during grid outages — how it islands your home, keeps charging from solar off-grid, and which settings matter before the storm.
Read moreWhy simple payback math fails on real utility bills. How demand charges, tiered rates, fixed monthly charges, and annual true-ups each change solar ROI — with a worked example.
Read moreClaim solar tax credits on rental properties attached to primary homes with our expert guide
Read moreAn honest comparison of Tesla Solar Roof tiles and traditional solar panels — cost premium, durability ratings, install complexity, and who each option actually makes sense for.
Read moreHow net metering credits work when your solar system overproduces — a month-by-month worked example, carryover rules, annual true-up math, and why oversizing rarely pays.
Read moreTurn 12 months of electric bills into a solar system size with one simple formula, a worked sizing table, and a free NREL tool to sanity-check the result.
Read moreBefore buying a Span panel (or after, like me), here's how to check whether your inverter is wired in a way that supports circuit-level monitoring — and what it costs to change it if not.
Read moreWhat really happens when you add battery backup to a home that already has a generator — the charging limitation almost nobody mentions, transfer switch options, and the questions to ask your installer.
Read moreChoose the right Tesla Powerwall size for your home with our comparison of 10kWh vs 13.5kWh models.
Read moreTime-of-use rates charge the most in the evening — exactly when your panels quit. Here's how to shift the loads that can move, cover the ones that can't, and decide whether a battery earns its cost.
Read moreTrack solar panel performance using Tesla App and Powerwall Dashboard for optimal energy independence with solar monitoring with powerwall
Read moreIf your solar inverter was wired to the service entrance instead of the breaker panel, your Span panel has no idea solar exists. Here's what happened to me and how to work around it.
Read moreI have a Span panel, Tesla Solar, and real opinions about both. Here's what Span does well, what it gets wrong, and whether solar homeowners should spend $3,500-$6,000 on one.
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