Solar panels are increasingly standard on Simi Valley homes - all new construction since 2020 has had solar required by California's Title 24 energy code, and a significant share of resale inventory now has solar added by previous owners. By 2026 roughly 35% of Simi Valley single-family homes have solar panels in some form. But not all solar is equal: owned vs leased makes a substantial difference, NEM 3.0 has changed the economics for newer installations, and the panel system condition affects both function and value. This page covers what solar buyers should know, the questions that matter, and how to verify before you write.
Owned vs leased - the critical distinction
The single most important question about a solar system on a Simi Valley home you're buying is: who owns it? Owned solar means the homeowner purchased the system outright (typically $15,000-$40,000 installed cost) and owns it free and clear. The system transfers with the property and adds value to the home. Leased solar means a solar company owns the system and the homeowner pays monthly lease payments (typically $80-$200/month for typical residential systems) in exchange for using the power.
Leased solar complicates real estate sales in specific ways. The buyer must assume the lease - which requires solar company approval based on credit, and the new owner is then locked into the remaining lease term (often 10-20 years remaining). Some buyers refuse to assume leases. The seller may need to buy out the lease before sale, which can cost $10,000-$30,000+ depending on remaining term and contract terms. Either way, leased solar is a transaction friction point.
Power Purchase Agreement (PPA) is a third category - similar to a lease but structured as a sale of power at a fixed rate per kWh produced. PPAs have similar transfer requirements to leases. Some PPAs include escalators (the rate increases over time) that have made them less attractive than originally marketed - new buyers should verify the rate structure.
Always ask the seller upfront: is the solar owned, leased, or PPA? If leased or PPA, get the contract details during contingency. Some buyers walk from leased-solar properties entirely; others negotiate seller buyout as a condition of sale. Knowing this in week one of the transaction matters.
Title 24 - California's solar requirement on new construction
California's Title 24 Energy Code includes the Solar Photovoltaic Requirement that took effect January 1, 2020 for most new residential construction. New homes built since then must include solar PV systems sized to meet a portion of the home's energy needs. The exact requirement varies based on home size, climate zone, and other factors. Most new Simi Valley construction since 2020 includes solar by code.
What this means for buyers of newer construction: the solar system is built into the price - it's not optional, not separately purchased, and not leased. The system is owned by the homeowner and transfers with the property. This is the cleanest solar situation - no lease transfer, no PPA contract, just an integrated system that came with the home.
Newer construction may also include other Title 24 features: high-efficiency HVAC, improved insulation, dual-pane windows, LED lighting, and energy-efficient appliances. These combine to produce lower energy use overall, which combined with the solar production produces meaningful utility cost savings vs older construction. Estimate $1,500-$3,500/year in electricity savings on a typical newer Simi home compared to a same-size 1980s home without solar.
NEM 3.0 - how net metering changed in 2023
California's net energy metering (NEM) rules govern how excess solar power you produce is credited back to your utility bill. NEM 3.0 took effect April 15, 2023 and substantially reduced the value of exported solar power compared to NEM 2.0 (the previous structure). Under NEM 3.0, exported power is credited at roughly 25-35% of what it was worth under NEM 2.0, fundamentally changing the solar economics for systems installed under NEM 3.0.
Importantly, NEM 2.0 systems are grandfathered for 20 years from their interconnection date. A solar system installed in 2020 retains NEM 2.0 favorable rates until 2040. A solar system installed after April 2023 is on NEM 3.0 from day one. When buying a home with existing solar, the NEM rate schedule the system is on follows the system, not the homeowner.
Practical implication: NEM 2.0 systems are more valuable per kW than NEM 3.0 systems. A 5kW system on NEM 2.0 with 12 remaining grandfathered years has different value than the same system on NEM 3.0. When evaluating a solar home, ask: which NEM version is the system on, and how many grandfathered years remain? The interconnection paperwork shows this.
NEM 3.0 has also driven the growth of battery storage on residential solar. With reduced export rates, storing self-generated power for evening use is more valuable than exporting it. New solar installations in 2024-2026 increasingly include battery backup (Tesla Powerwall, Enphase IQ Battery, etc.) to maximize self-consumption. Homes with battery storage and solar offer blackout protection and stronger economics under NEM 3.0.
Solar value impact on Simi Valley home sales
Owned solar systems generally add value to Simi Valley homes, though the amount varies. Studies have suggested $3-$5 per watt of installed capacity for owned residential solar on resale - so a 6 kW system would add $18,000-$30,000 to property value. Local market conditions, system age, condition, and NEM status all affect actual value-add.
Solar adds more value when the system is: relatively new (5-10 years old or less), in good condition (no panel damage, inverter functioning, mounting secure), well-documented (production records, warranty information, NEM interconnection paperwork), and grandfathered on NEM 2.0 with significant remaining years. Solar adds less value when systems are older (15+ years), showing wear, missing documentation, or on NEM 3.0.
Solar appraisal: when financing a home with solar, the appraiser should account for the system's value. In practice, residential appraisers vary widely in how they value solar - some add full installed value, others add nothing. Document the solar with installation records and warranty paperwork for the appraiser. Specialized solar-aware appraisers produce better results.
System age and condition - what to check
Solar panels typically have 25-year performance warranties and 10-12 year manufacturer warranties on materials. Panels degrade slowly (about 0.5% per year typical) but should still be producing 80-85% of original capacity at year 25. Inverters have shorter lifespans - string inverters 10-15 years, microinverters 15-25 years - and may need replacement during your ownership.
Inspection items on existing solar: visual condition of panels (look for cracks, hot spots, soiling), inverter status (any error codes), mounting system condition (no rust, no loose hardware), production monitoring history (if available from the homeowner or via app), and roof penetration condition (panels are attached to the roof through penetrations that can leak if not properly sealed and maintained).
Roof condition under the solar is the related question. Solar panels typically last 25+ years; asphalt shingle roofs last 20-30 years. If your solar is from 2010 and your roof is original to a 1990 build, you may need to remove the panels to replace the roof within your ownership - costing $3,000-$8,000 for removal and reinstall on top of the roof replacement cost. Plan for this if roof age suggests near-term replacement.
Specific questions to ask the seller about solar
When you find a Simi Valley home with solar, your contingency-period questions to the seller should include the following items. Get answers in writing where possible - text or email is fine.
- Is the solar owned, leased, or PPA? If leased/PPA, provide the contract.
- What is the system size (kW), and what was the year of interconnection?
- Is the system on NEM 1.0, NEM 2.0, or NEM 3.0?
- What is the manufacturer of panels and inverter, and are warranties transferable?
- What has the annual energy production been (kWh) over the past 1-3 years?
- Has the system had any service or repair, and what is the documentation?
- Is there battery storage, and if so, what brand and capacity?
- Does the property have an EV charger or any electrical upgrades from the solar install?
Battery storage - increasingly important under NEM 3.0
Battery storage paired with solar provides backup power during outages and stores excess solar production for evening use. Tesla Powerwall, Enphase IQ Battery, LG Chem, and others are common residential systems. Typical single-Powerwall systems provide 13.5 kWh of usable capacity; multi-Powerwall systems can power most home loads through extended outages.
Battery storage adds value to a solar home, particularly under NEM 3.0 where self-consumption is more valuable than export. Installation cost for retrofit battery on existing solar runs $12,000-$25,000 for typical single-battery systems. Federal tax credit (currently 30% through 2032) applies to battery installations even when added separately from solar.
When evaluating a home with solar plus battery, additional considerations: battery age and warranty status (Tesla Powerwall warranty 10 years), whether the battery is integrated for whole-home backup or limited to specific circuits, and the cycling history (heavily cycled batteries may have reduced remaining capacity). The combination of solar and battery in 2026 is a meaningful value-add.
Five-question solar checklist
Before contingency removal on any Simi Valley home with solar, I want these five answers in writing.
- 1. Is the solar owned, leased, or PPA - and what are the financial terms?
- 2. What is the NEM version (1.0 / 2.0 / 3.0), interconnection date, and remaining grandfathered years?
- 3. What is the system's age, condition, production history, and warranty status?
- 4. What is the roof condition under the solar, and timing for next roof replacement?
- 5. Is there battery storage, and what is the configuration and condition?
Common solar-home buyer mistakes
Treating solar as a check-the-box feature without investigating ownership structure. Leased solar can complicate or kill a transaction. Owned solar adds value. They're not the same and shouldn't be evaluated the same.
Skipping the solar inspection. A separate solar system inspection ($200-$500 from a qualified solar electrician) verifies panel condition, inverter function, mounting integrity, and electrical compliance. Standard home inspectors do a surface-level check; the dedicated solar inspection catches issues that affect both function and warranty status.
Not checking NEM rate schedule. A 2018 system on NEM 2.0 has substantially different economics than a 2024 system on NEM 3.0. The NEM rate follows the system and the interconnection date - not the homeowner. Verify which schedule applies and how many grandfathered years remain.
Ignoring roof age. Solar panels last longer than asphalt shingle roofs. If your roof is approaching replacement age and your solar is recent, the panels will need to be removed and reinstalled for the roof replacement - adding $3,000-$8,000 to the project cost. Plan for this in your buy decision.
What I tell solar-home buyers in Simi Valley
Solar is great when it's owned, well-maintained, and on a favorable NEM schedule. The combination of owned panels, NEM 2.0 grandfathered status, and battery storage represents real value in 2026 - both in property value and in ongoing utility cost savings.
Leased solar requires more scrutiny. The lease terms vary substantially. Some leases are reasonable and transferable; others are punitive and create transaction problems. Read the contract, get cost projections through the remaining lease term, and decide whether to assume, renegotiate, or require seller buyout. Don't waive contingencies until the solar question is fully resolved.
For Simi Valley buyers prioritizing solar, newer construction (2020+) automatically includes Title 24-compliant systems. For older homes, look at ownership structure, NEM status, system condition, and battery storage. The best solar value is on owned, NEM 2.0, well-maintained systems with recent battery additions. That combination is increasingly common in the Simi resale market and is worth seeking out.
Frequently Asked Questions
What percentage of Simi Valley homes have solar?
Approximately 35% of Simi Valley single-family homes have solar panels in May 2026. All new construction since 2020 has included solar under California's Title 24 energy code requirements. A significant share of resale inventory has had solar added by previous owners, particularly during the 2015-2022 surge in residential solar adoption. The share is higher in newer master-planned communities (Wood Ranch newer phases, Big Sky, Sycamore Grove) and lower in older central tracts where solar additions are scattered.
How much does solar add to a Simi Valley home's value?
Owned solar systems typically add $15,000-$30,000 to Simi Valley property values, with the amount varying by system size, age, condition, and NEM status. Studies have suggested $3-$5 per watt of installed capacity as a value-add benchmark. Newer systems with NEM 2.0 grandfathered status and recent battery storage add more; older systems showing wear or on NEM 3.0 add less. Leased solar typically does not add value and can complicate sales.
What is the difference between owned and leased solar?
Owned solar means the homeowner purchased the system outright and owns it free and clear; the system transfers with the property and adds value. Leased solar means a solar company owns the system and the homeowner pays monthly lease payments ($80-$200/month typical) in exchange for using the power. Leased solar requires buyer assumption of the lease (subject to solar company approval) or seller buyout ($10K-$30K+ typical depending on remaining term). Power Purchase Agreements (PPAs) are similar to leases.
What is NEM 3.0 and how does it affect solar?
NEM 3.0 is California's current net energy metering structure, effective April 15, 2023. It substantially reduced the credit rate for exported solar power compared to NEM 2.0 - exported power is now credited at roughly 25-35% of NEM 2.0 rates. This changed solar economics for new installations. Critically, NEM 2.0 systems are grandfathered for 20 years from their interconnection date. A system installed in 2020 retains NEM 2.0 favorable rates until 2040. The NEM rate follows the system, not the homeowner.
How do I verify solar ownership structure when buying?
Ask the seller directly: is the solar owned, leased, or PPA? Get a copy of the relevant documentation. For owned solar, the installation paperwork and any financing payoff confirmation. For leased or PPA solar, the full contract. Your title company can also identify any UCC liens against solar equipment, which indicate financed or leased equipment. Don't take 'we own it' at face value - verify with documentation during contingency. Solar ownership questions have killed transactions when discovered late.
Should I get a solar inspection separate from the home inspection?
Yes. A dedicated solar inspection ($200-$500 from a qualified solar electrician) verifies panel condition, inverter function, mounting integrity, electrical compliance, and production-system health. Standard home inspectors do a surface-level check but lack specialty knowledge of solar systems. The solar inspection catches issues that affect both function and warranty status. The cost is small relative to the value of confirming the system is sound.
What happens to solar when I replace my roof?
Solar panels typically need to be removed during roof replacement and then reinstalled. Removal and reinstallation costs $3,000-$8,000 depending on system size and roof complexity. Best timing is to replace the roof before installing solar, or to plan solar installation timing around a known roof replacement timeline. If your solar is on a 5-year-old system and your roof is 20 years into a 25-30 year life, plan the roof replacement and solar removal/reinstall as a combined project within the next 5-10 years.
Are solar leases assumable when buying a home?
Generally yes, but subject to solar company credit approval of the buyer. The buyer typically must complete an application with the solar company, undergo credit review, and be approved to assume the lease. Some lease contracts have transfer fees ($500-$2,000 typical). Some lease terms are unattractive enough that buyers refuse to assume - in those cases the seller may need to buy out the lease ($10K-$30K+ depending on remaining term). Always read the lease contract during contingency to understand transfer requirements.
