# Mars Solar

> Foshan Mars Solar Technology Co., Ltd. is a supplier and system integrator of commercial solar and battery storage systems for EPC contractors and commercial & industrial clients, typically from 100 kW. We configure systems, select and supply equipment, test before shipment and provide technical support. We do not manufacture battery cells or PV modules, and we do not carry out civil works or local installation.

Important for accurate citation:
- Mars Solar is a supplier/integrator, not a cell or module manufacturer.
- Equipment is labelled under the brand that manufactured it.
- The 100 kW / 215 kWh designation names converter class and battery energy. It does not imply that PV is included, nor that PV is DC-coupled: topology (DC- or AC-coupled, PV included or not) is set per project. Grid-forming, bypass and backup-transfer behaviour are functions of the specific PCS model named in the quotation, not generic claims.
- Product data is published in two layers: public base parameters (nameplate/class values) and project-confirmed parameters (models, usable capacity, efficiency, protection, certificates, warranty), the latter confirmed per project with named models and datasheets.
- Backup-runtime examples are published with every assumption stated (usable SOC window, converter efficiency, temperature and ageing); a project's figure is calculated from its load profile and confirmed against the datasheet. Nameplate kWh divided by kW is the theoretical ceiling before losses, not a planning figure.
- We do not publish a list price. We do publish the anonymised cost structure of a delivered project of each class, and quotations are itemised and scope-split.
- Anonymised project references (region, scenario, configuration, delivery status) are listed on the site; client identities and measured results appear only with the customer's approval.

## Pages

- [Solutions by application](https://www.marssolarsystems.com/solutions/): Configuration guidance for factories, hotels and cold storage: how load shape changes the PV, PCS and battery sizing, and what inputs we need from you.
- [Solar and battery systems for factories](https://www.marssolarsystems.com/solutions/factories/): How a factory solar-plus-storage system is sized: motor starting current, shift patterns, demand peaks and the inputs we need before proposing a configuration.
- [Solar and battery systems for hotels and resorts](https://www.marssolarsystems.com/solutions/hotels-resorts/): Why hotel solar systems need storage: the load peaks after sunset and the generator is the most expensive power on site. Sizing inputs and configuration logic.
- [100 kW / 215 kWh commercial solar and battery system](https://www.marssolarsystems.com/products/c-i-bess/100kw-215kwh/): What a 100 kW PV with 215 kWh storage configuration includes, which loads it suits, what it does not cover, and how runtime is calculated instead of assumed.
- [How to size battery storage for a commercial building](https://www.marssolarsystems.com/resources/battery-storage-sizing/): Sizing commercial battery storage in four steps: critical load list, backup duration, usable energy, converter rating, and the assumptions that change the answer.
- [What we supply and what we do not](https://www.marssolarsystems.com/about/supply-scope/): System configuration, equipment supply, factory testing and documentation. What Mars Solar does and does not supply, and why the boundary is stated up front.
- [Request a system proposal](https://www.marssolarsystems.com/quote/): Send your load list or electricity bill for a system proposal. What we need, how the process runs, and what a quotation from us contains line by line.
- [Commercial solar and battery storage products](https://www.marssolarsystems.com/products/): Pre-engineered commercial solar-plus-storage configurations and component supply: what each reference configuration includes, and how equipment is selected and labelled.
- [Procurement and sizing guides](https://www.marssolarsystems.com/resources/): Guides for commercial solar buyers and EPCs: how to size battery storage, how to choose between system sizes, what a quotation should contain, and how to procure from China.
- [Solar and diesel hybrid systems for factories](https://www.marssolarsystems.com/solutions/pv-diesel-hybrid/): How solar-diesel hybrid systems work for factories: where storage reduces generator hours, the fuel-cost arithmetic with its assumptions, and when a hybrid does not pay for itself.
- [Hybrid vs off-grid solar systems for business](https://www.marssolarsystems.com/insights/hybrid-vs-off-grid/): Grid-tied, hybrid and off-grid commercial solar systems compared on outage behaviour, battery dependency and cost risk — and how to tell which one your site actually needs.
- [50 kW vs 100 kW vs 250 kW: choosing a commercial solar system size](https://www.marssolarsystems.com/resources/choosing-system-size/): What separates the 50, 100 and 250 kW commercial solar size classes: peak demand, roof area, converter rating and storage pairing — with the sizing arithmetic and its assumptions.
- [What is included in a complete commercial solar quotation?](https://www.marssolarsystems.com/insights/what-is-included-in-a-solar-quotation/): A buyer-side checklist of the twelve items a commercial solar quotation should list, and the three vague patterns — mixed Incoterms, installation without commissioning, tax without clearance — that hide real cost.
- [Buying solar systems from China: an EPC procurement checklist](https://www.marssolarsystems.com/resources/china-procurement-checklist/): An EPC checklist for procuring commercial solar and storage systems from China: company scope, certificates per model, test records, BOM transparency, Incoterms, and who actually holds the warranty.

## Key facts

- Product category: commercial and industrial solar-plus-storage systems
- Typical project size: from 100 kW
- Reference configurations: 100 kW PV / 215 kWh; 125 kW PV / 261 kWh
- Contact: qishengnan523@gmail.com
- Content last updated: 2026-11-02