Yiteng Case Sharing 13 - In-depth Analysis of the Photovoltaic and Energy Storage Project in Gonghe County, Qinghai

创建于06.04

In-depth Analysis of the Photovoltaic Energy Storage Project in Gonghe County, Qinghai (Power Generation Side Application Scenario Case)

——How the world's largest renewable energy base's energy storage practices solve the "abandoned light" problem?

1. Project Background: The Pain Points of China's Photovoltaic Heart

World-class photovoltaic base: Total planned capacity of 22GW, annual power generation of 40 billion kWh (equivalent to 1.5 Three Gorges)

Abandoned Solar Dilemma: In 2020, the abandonment rate of solar energy reached 15% (national average 3%), equivalent to an annual waste of 6 billion kilowatt-hours of electricity.

Grid Bottleneck: The utilization rate of ultra-high voltage outbound channels is less than 70%, requiring local consumption buffering.

2. Solution: The Gobi Miracle of Photovoltaics + Energy Storage

Core parameters of the project:

System	scale	Technical Highlights
Photovoltaic array	2.2GW (Phase 1)	Dual-sided power generation + automatic tracking system
Supporting energy storage	1GWh (Lithium Iron Phosphate)	Huawei string-type PCS, efficiency > 95%
Smart Scheduling	State Grid "Source Network Load Storage" Platform	15-minute ultra-short-term photovoltaic prediction accuracy > 90%

Operating logic:

3. Economic Model: Breaking the "Energy Storage Doesn't Make Money" Curse

Fourfold Income

Abandoning photovoltaic power generation monetization: Selling the originally discarded 15% of photovoltaic electricity storage.

Peak-valley price difference arbitrage: Utilize the Qinghai-Henan ultra-high voltage price difference (¥0.18/kWh)

Frequency modulation service charge: Participate in the Northwest Power Grid auxiliary service market (¥0.5/MW·time)

Green certificate carbon rights revenue: 500,000 green certificates generated annually (value ¥25 million)

Investment Return Calculation

Index	Value
Total investment	¥4.2 billion (energy storage accounts for 28%)
Annual Comprehensive Income	¥680 million
Payback Period	6.2 years
Whole Life Cycle IRR	12.7%

4. Technological Innovation: Plateau-Specific Solutions

Extreme Environment Response

Wind and sand resistance design: Energy storage container IP54 protection + self-cleaning ventilation system

Low-temperature endurance: Battery heating energy consumption <3% in -30℃ environment (industry average 5%)

Altitude compensation: The inverter has zero power attenuation at an altitude of 3000 meters.

Global pioneering practice

Photovoltaic bracket energy storage: Integrating battery modules at the bottom of the photovoltaic bracket, saving 40% of land use.

Pasture and solar energy complement each other: grazing under photovoltaic panels, energy storage drives the intelligent irrigation system.

5. Policy Empowerment: Special Treatment of National Experimental Fields

Qinghai Province Exclusive Policy

The energy storage discharge amount is settled according to the photovoltaic electricity price (regardless of peak and valley).

The energy storage project will have priority in obtaining photovoltaic quotas.

Land use tax reduction of 50%

Pastoralist Interview

"Previously, solar panels were just decorations, but now the energy storage at night allows the sheep pen's heater to work continuously."

——Gonghe County Tibetan herdsman Suo Nanda Jie

6. Global Inspiration: Standard Configuration for Renewable Energy Bases

Copyable mode

Planning binding: Mandatory configuration of over 200MWh of energy storage for every 1GW of photovoltaic.

Function reuse: Energy storage simultaneously participates in peak shaving + frequency modulation + black start

Ecological Integration: Photovoltaic - Energy Storage - Agriculture and Animal Husbandry Integrated Land

Applicable regions:

Atacama Desert Photovoltaic Zone, Chile

Saudi NEOM New City Project

7. Future Evolution: 2025-2030 Roadmap

Phase II Project Planning

Expand to 5GWh energy storage, introduce vanadium flow batteries to extend duration

Pilot photovoltaic hydrogen production + energy storage joint scheduling

Build the "Qingyu Direct Current" Virtual Power Plant Cluster

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Summary

"When global photovoltaic power stations are still troubled by the abandonment of light, Qinghai has turned every ray of sunshine on the Gobi Desert into gold with energy storage."

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