Basic knowledge of off grid power generation

Off-grid power generation: This involves building a “stand-alone power generation system” that operates independently of the grid, allowing the generated electricity to be used autonomously, much like having a portable power bank at home that doesn’t require plugging into mains power and can supply electricity directly;
Grid-connected power generation (refers to the previously mentioned industrial/commercial/residential photovoltaic systems, where the generated electricity can be used internally or fed back into the grid for sale, similar to a power bank that can not only be charged but also charge the mains power in reverse).
One sentence:
Off-grid means generating and using your own electricity without interacting with the power grid;
Grid connection = power generation that can be used for self-consumption or sold to the grid, connected to the grid.

Any place where the power grid is not covered, the cost of connecting to the grid is high, or where independent power supply is required, is considered off grid. Core 4 categories:
1. Remote outdoor: mountainous rural areas, pastoral grasslands, forest outposts, outdoor base stations (connecting to the power grid requires laying tens of kilometers of lines, which is too expensive);
2. Mobile homework: temporary prefabricated houses on construction sites, field exploration teams, RV campsites, outdoor performances (power points are not fixed and cannot be connected to the power grid);
3. Emergency backup: remote homestays in scenic areas, island resorts, gas stations (closed in case of power outage, off grid backup/main power supply);
4. Special requirements: Border defense stations, field breeding bases, unmanned equipment (high requirements for power supply independence, cannot rely on the power grid).

Core customers (looking for individuals/units with “electricity imbalance, difficulty in connecting to the grid, and the need for independent power supply”)
1. Agricultural related groups: farmers in mountainous areas, livestock breeders in pastoral areas, and villagers in remote rural areas;
2. Outdoor operators: scenic homestays, island farmhouses, outdoor camping sites, outdoor construction sites. General contractors:
3. Government and enterprise units: border police stations, outdoor communication base station operation and maintenance units, highway maintenance stations, geological exploration teams:
4. Special industries: field farming, temporary mining operations, outdoor performance companies.

Business development strategy (small white light asset entry, don’t self fund)
1. First, test the requirements: visit the customer’s electrical equipment (lights, refrigerators, machines), calculate the total electricity consumption, and determine the size of the off grid system;
2. Establish a standardized solution: use “photovoltaic panels+energy storage batteries+inverters” as the core set (the most mainstream off grid solution, low cost, easy to maintain), and match the size according to customer needs;
3. Light asset docking: Find reliable equipment manufacturers to obtain spot goods. You can do scheme design and docking installation to earn scheme fees and equipment price differences, without having to produce on your own;
4. Doing after-sales maintenance: Off grid systems are mostly located in remote areas, and customers do not know how to repair them. Annual maintenance fees are collected to earn long-term money.

1. Core equipment components: photovoltaic panels (power generation), energy storage batteries (storage, off grid core! Without grid support, all rely on battery storage), inverters (converting DC power from photovoltaic/battery to AC power that the equipment can use), controllers (protecting the battery from overcharging and overdischarging), these four are the foundation and indispensable
2. Electricity consumption calculation logic: It will calculate the customer’s “total electricity consumption” (power of all devices X daily usage time), and then match the power generation of photovoltaic panels and the storage capacity of batteries to ensure sufficient power supply
3. Mainstream solution types: photovoltaic off grid (most commonly used, low-cost, clean), diesel generator off grid (suitable for places with high electricity consumption and frequent rainy days), photovoltaic+diesel generator hybrid off grid (complementary, photovoltaic power supply as the main source, generator power supplementation on rainy days, with the highest cost-effectiveness)
4. Site adaptation knowledge: For off grid photovoltaics, it is necessary to choose a place with sufficient sunlight, and the battery should be well waterproofed/sun protected/antifreeze (equipment protection is important in remote areas with poor environmental conditions)
5. Key points of cost accounting: Calculate the total cost of the system and the payback period (customers are mostly farmers/small merchants who are sensitive to prices, so it is necessary to settle the accounts before signing the contract)
6. Simple troubleshooting: Understanding basic equipment fault diagnosis (such as checking if the photovoltaic panel is blocked when there is no power, and checking if the battery is dead when there is no power), can quickly solve small problems, and customers trust it more

Final summary: Off grid power generation is the “exclusive power supply manager” for places that cannot be reached by the power grid. The core relies on the “photovoltaic+battery” system to connect with remote/mobile/emergency electricity customers. As long as novices understand equipment composition, electricity consumption calculation, and scheme matching, they can quickly enter the market. The focus is on after-sales service, and there will be a lot of referrals from old customers!
7. The core of an off grid power generation system consists of four major components: power generation, energy storage, voltage transformation, and control, along with basic auxiliary materials. Using the metaphor of “mobile phone charging”, the most mainstream composition of a photovoltaic off grid system is as follows (diesel off grid only replaces the power generation end, the rest is universal):
(1) Power generation end: photovoltaic panels (core, like “solar chargers”, relying on light to generate electricity), diesel generators as backup (to replenish electricity when there is no sunlight);
(2) Storage end: Energy storage battery (off grid core! Like a “large capacity power bank”, storing electricity for use when there is no sunlight, relying solely on it for backup without a power grid);
(3) Transformer end: Inverter (like a “power converter” that converts the DC power from photovoltaic/battery cells into AC power for household appliances/machines):
(4) Control end: Controller (such as a “charging protector” to prevent overcharging/overdischarging of the battery, extend battery life, and connect power generation and storage);
(5) Auxiliary materials: brackets (fixing photovoltaic panels), cables, distribution boxes, lightning/waterproof accessories (ensuring stable system operation).
-Summary: Photovoltaic panel power generation involves a controller to stabilize the power supply, a battery to store the power, and an inverter to transform the power. The entire system achieves independent power supply without connecting to the power grid.

1. No dependence on the power grid, independent power supply for remote areas/mobile scenarios, solving the problem of “difficult and expensive connection to the grid”
2. Stable power supply, not afraid of power outages, suitable for scenarios such as border defense and outdoor base stations that require high reliability of power supply
3. Flexible installation, low power can be installed on rooftops/open spaces, high power can be modularized and built without waiting. 4. Off grid photovoltaics are cleaner and cost saving, with no electricity expenses, and only require equipment maintenance in the later stage
Of course, there are also his core flaws
1. The initial investment is high, requiring a complete set of equipment such as photovoltaic panels, batteries, and inverters, which is much more expensive than grid connected systems
2. Electricity storage is limited, relying solely on batteries for storage. The power supply capacity decreases on rainy days/without sunlight, and diesel generators need to be equipped for backup
3. There are maintenance costs in the later stage, and the battery has a service life (3-5 years need to be replaced). Maintenance in remote areas is also more complicated
4. The power supply scale is limited, suitable for small and medium power consumption, and cannot meet the electricity demand of high energy consuming scenarios such as large factories

Summary in one sentence: Off grid is better for independent power supply and adaptation to remote scenarios. Its shortcomings include high upfront costs and bottlenecks in power storage, making it suitable for areas where the power grid cannot cover, and not suitable for ordinary industrial, commercial, or residential electricity use.