Quick Overview: Briggs & Stratton Energy Solutions designs the high-efficiency SimpliPHI® 6.6 Battery, a Lithium Ferro Phosphate (LFP) storage system that transforms variable solar generation into dependable, 24/7 power. Engineered for ultimate flexibility, the SimpliPHI 6.6 integrates seamlessly with industry-leading hybrid inverters from EG4®, Sol-Ark®, and Solis® to safeguard homes and businesses against power grid failures. Built with non-toxic, cobalt-free battery chemistry, Briggs & Stratton equips homeowners and solar installers with long-term energy security while lowering utility bills through Time-of-Use (TOU) savings and Virtual Power Plant (VPP) incentives.
Unpredictable weather events, aging distribution networks, and surging electrical demand continue to strain the utility grid. While installing solar panels allows you to generate clean electricity, solar power alone cannot guarantee energy security.
What happens to a grid-tied solar energy system when the grid goes down?
Solar energy generation peaks during midday hours when household demand is often low. Without localized energy storage, excess daytime solar power is exported back to the grid—frequently at reduced utility compensation rates. Furthermore, standard grid-tied solar inverters automatically shut down during a utility blackout to protect line workers, leaving unprotected properties in the dark even when the sun is shining.
Pairing solar panels with intelligent battery energy storage solves this intermittency gap. Battery storage captures surplus daytime energy, creating a private microgrid that keeps critical equipment, refrigeration, lights, and medical devices operating continuously when the main grid goes down.
Meet the SimpliPHI® 6.6 Battery: The Heart of Your Microgrid
When building a resilient home energy system, safety and reliability are non-negotiable. The Briggs & Stratton SimpliPHI 6.6 Battery serves as the foundation of your energy independence. Engineered and tested in America, this advanced storage solution uses premium Lithium Ferro Phosphate (LFP) cell technology.
- Minimized Thermal Runaway Risk: LFP chemistry exhibits high thermal and chemical stability, making it inherently safer and far less prone to overheating than standard cobalt-based lithium-ion batteries.
- Cobalt-Free and Environmentally Non-Toxic: Manufactured without cobalt or nickel, the SimpliPHI 6.6 eliminates hazardous heavy metals, supporting an ethical supply chain and safe indoor or outdoor residential installation.
- Extended Cycle Lifespan: Designed to deliver thousands of charge and discharge cycles, providing homeowners with reliable daily performance for decades.
Seamless Integration: Partnering with EG4, Sol-Ark, and Solis
A premium battery relies on an intelligent inverter to efficiently manage power distribution. Hybrid inverters convert the direct current (DC) stored in your SimpliPHI 6.6 Battery into alternating current (AC) for household appliances.
To meet diverse energy requirements across residential and commercial applications, Briggs & Stratton offers maximum system flexibility through integration with leading inverter manufacturers:
- EG4® Inverters: Models such as the scalable EG4 12kPV and the EMP-hardened 18kPV deliver high-capacity solar input and split-phase backup for high-demand applications.
- Sol-Ark® Inverters: Designed for whole-home backup, options like the 12K-2P-N and 15K-2P-N provide maximum continuous power and effective energy management.
- Solis® Inverters: Featuring integrated bypass technology, the Solis LV Home Hybrid Inverter offers a versatile and cost-effective platform tailored for the SimpliPHI 6.6 system.
- Instant Islanding Protection: Advanced controls detect power outages in milliseconds, automatically switching to battery power without disrupting sensitive equipment.
Through these top-tier partnerships, the SimpliPHI 6.6 system optimizes daily energy usage and delivers dependable power security.
Unlocking Financial ROI: Peak Shaving and Virtual Power Plants
A SimpliPHI 6.6 Battery system delivers immediate financial returns every day, not just during power outages. Working in tandem with a smart hybrid inverter, it optimizes household power consumption to lower utility bills:
- Time-of-Use (TOU) Rate Arbitrage: Store low-cost solar power generated during the day, then power your home from the battery during peak evening hours when utility electricity prices spike.
- Virtual Power Plant (VPP) Monetization: Participate in regional grid stabilization programs where utilities compensate battery owners with cash payments or bill credits for releasing stored energy during grid emergencies.
- State and Local Incentives: While federal residential clean energy tax credits expired on Dec. 31, 2025, homeowners can still leverage state-level battery rebates, local climate grants, and utility performance incentives to reduce upfront hardware costs.
Proven Global Resilience: Powering Communities in Need
Briggs & Stratton serves as a trusted guide for homeowners, certified dealers, and solar installers who demand uncompromised system reliability. Beyond residential installations, our battery storage systems actively support critical relief missions globally:
- Disaster Relief Power: Partnering with World Central Kitchen and the Red Cross to supply portable battery storage for emergency kitchens serving families impacted by natural disasters.
- Emergency Medical Infrastructure: Powering mobile medical response clinics with Sesame Solar in Michigan, as well as refugee medical centers with the Footprint Project in Brownsville, Texas.
- International Healthcare Microgrids: Energizing 43 medical clinics and regional hospitals across Nigeria in partnership with EM-ONE Energy Solutions, along with critical healthcare sites in Haiti.
Operating in more than 43 countries, Briggs & Stratton Energy Solutions provides the technology, top-tier inverter partnerships, and local dealer support required to master full energy independence.
Frequently Asked Questions
Which hybrid inverters are compatible with the SimpliPHI 6.6 Battery?
The SimpliPHI 6.6 Battery features open-architecture communication, allowing it to integrate seamlessly with industry-leading hybrid inverters, including top models from EG4, Sol-Ark, and Solis. This gives homeowners and installers the flexibility to design a custom backup system that fits their specific power needs and budget.
What is a Virtual Power Plant (VPP) and how does it earn money for homeowners?
A Virtual Power Plant links networked home batteries into an aggregated clean energy reserve. During periods of extreme electrical grid strain, local utilities draw small amounts of stored power from participating batteries and compensate owners through direct cash payouts or utility bill credits.
Why is Lithium Ferro Phosphate (LFP) safer than other lithium-ion batteries?
Used in the SimpliPHI 6.6 Battery, LFP chemistry contains zero cobalt or nickel, making it thermally stable, non-combustible, and non-toxic. Unlike standard lithium-ion chemistries, LFP batteries withstand high operating temperatures without risking thermal runaway, making them the safest choice for residential energy storage.
