Okay, let's break down your solar aspirations and get you pointed in the right direction. It sounds like you have a good vision: maximizing solar production on your available roof space, integrating a battery system, and using the grid as backup.

Your Key Objectives (summarized)



Maximize Solar Yield

Efficient panels are important.

Whole-House Backup

Battery system is crucial.

Grid Top-Off

Rely on grid for supplemental power only.

Simplified System

Minimize complexity where possible.

Fresh Roof

Makes installation easier.

SoCal Location

Ideal for solar generation.

Now, let's talk hardware and general considerations



1. Solar Panels



Efficiency

Since you want to maximize yield on your 1000 sq ft roof, high-efficiency panels are a good choice. Look for panels with efficiencies

over 20%. Some popular high-efficiency brands include: REC Group

Known for their TwinPeak series, offering good efficiency and durability.

Panasonic (formerly Sanyo)

Their HIT panels have traditionally been at the top end of the efficiency spectrum.

SunPower

Maxeon series panels are very high efficiency and have an excellent warranty. (Note that SunPower as a company is in financial distress, so factor that into your risk assessment).

LG (no longer making panels)

Excellent reputation. You may find some stock available.

Qcells

Generally great price/performance.Important Note:

Panel efficiency is only one factor. Also consider:

Temperature Coefficient

How much does the panel's output degrade in hot weather? SoCal summers are brutal.

Warranty

Look for a 25-year performance warranty.

Cost

Balance efficiency with your budget.

Appearance

Do you care about the aesthetic appearance of the panels on your roof?

Panel Size and Power

Panels come in various sizes and power ratings (e.g., 350W to 500W+). Your installer will calculate how many panels you need based on your energy usage and roof space.

Microinverters vs. String Inverters with Optimizers



Microinverters (Enphase, APsystems)

Each panel has its own small inverter. This is generally more expensive than string inverters, but offers better performance in shaded conditions and allows for panel-level monitoring. They also provide more flexibility for future expansion.

String Inverters with Optimizers (SolarEdge)

A central inverter is used, but each panel has an optimizer that maximizes its power output. A good compromise between cost and performance, and commonly used.

Which is better? For your situation (potential for complex roof angles and maximizing yield), microinverters or string inverters with optimizers are generally recommended. They allow each panel to perform optimally, regardless of shading or variations in panel performance.2. Racking



Compatibility

Make sure the racking system is compatible with your chosen panels and your roof type.

Attachment

Given your new roof, proper attachment is essential. Your installer will use flashing kits specifically designed to prevent leaks around the mounting points. Given the Fire and Ice membrane, this is particularly important to ensure no punctures compromise its integrity.

Brands

Some reputable racking brands include:

IronRidge

A popular choice known for its durability and ease of installation.

SnapNrack

Another well-regarded brand.

Unirac

A widely used and reliable brand.

3. Battery System and Inverter



EcoFlow Whole House System

This is a relatively new and interesting option. The benefit here is its simplicity and modularity. You can start with a smaller battery capacity and expand later if needed. However, it's crucial to investigate the specific model's capabilities regarding whole-house backup and grid interaction. Pay attention to:

Power Output

Does it have enough power to run your entire house simultaneously during a power outage? Look at the continuous power rating, not just the peak.

Battery Capacity

How long will the battery last during an outage? Consider your essential loads (lights, refrigerator, medical devices).

Grid Tie

How does it interact with the grid? Does it automatically switch to grid power when the battery is low?

Warranty

What is the warranty on the batteries and the inverter?

Alternatives to EcoFlow (traditional options)



Tesla Powerwall

A popular choice for whole-house backup.

Generac PWRcell

Another good option.

Enphase Encharge

Pairs well with Enphase microinverters.

Inverter Sizing

The inverter needs to be sized appropriately for your solar panel array and your battery system. Your installer will handle this calculation.

4. Electrical Panel Upgrade and Subpanel



Panel Upgrade

This is likely necessary to accommodate the solar system and battery system connections.

Subpanel

Creating a subpanel dedicated to the inverter/battery system allows you to isolate your critical loads and simplify the wiring. This is a good idea.

Home Run Rewiring

As you mentioned, rewiring some circuits (home runs) to the subpanel might be needed to ensure critical loads are backed up by the battery system.

5. Permitting and Interconnection



Permitting

Solar installations require permits from your city or county. Your installer will typically handle this process.

Interconnection Agreement

You'll need to sign an interconnection agreement with Southern California Edison (SCE) to allow your system to connect to the grid. This agreement outlines the rules for exporting excess solar power to the grid (net metering) and receiving power from the grid when needed.

Important Considerations



Energy Audit

Before you do anything, get a professional energy audit of your home. This will help you identify areas where you can reduce your energy consumption, which will reduce the size and cost of your solar system.

Professional Installation

Do not try to DIY this project unless you are a qualified electrician and solar installer. Solar installations involve complex electrical work and safety considerations. Hire a licensed and experienced solar installer.

Multiple Quotes

Get quotes from multiple installers. This will allow you to compare pricing, equipment options, and installation timelines.

Net Metering

Understand how net metering works in your area. SCE has different net metering programs, so make sure you understand the details.

Incentives

Check for any available federal, state, or local incentives for solar installations. The federal tax credit is a significant incentive.

Next Steps


Energy Audit

Schedule a professional energy audit.2.

Consult with Installers

Contact several reputable solar installers in your area. Discuss your goals, roof conditions, and budget.3.

System Design

Work with the installer to design a system that meets your needs and budget.4.

Review Quotes

Carefully review the quotes from different installers.5.

Financing

Explore your financing options.6.

Installation: Once you've chosen an installer and secured financing, schedule the installation.I hope this helps! Let me know if you have more specific questions as you move forward. Good luck with your solar project! Flag for review