I. China's Residential Solar: From "Rapid Surge" to "Consolidation"
In 2024, China's residential solar market exhibited a "structural correction". According to the National Energy Administration (NEA), only 29.55 GW of new residential solar was added in 2024, a 23% decrease year-on-year, and its share of total new capacity fell from previous highs. By the end of 2024, cumulative installed residential solar capacity reached 145.15 GW, generating over 140 billion kWh of green electricity—accounting for 1.87% of the country's annual electricity consumption. More than 6 million rural households have installed solar power systems. The average return on investment fell below 10%, and over 450 counties and cities nationwide saw saturated distributed PV grid connection capacity, constrained by inadequate rural transformer capacity and grid carrying capacity.
II. Business Models and Financial Innovation
Financial tools are accelerating the development of residential solar. Huaxia Financial Leasing built 520,000 residential solar stations through a model combining finance leases and operating leases, with total installed capacity approaching 15 GW. CITIC Bank Guangzhou Branch issued nearly 2.1 billion yuan in loans to 27 entities to support rural revitalization. GCL Energy Technology and Ant Digital Technologies completed China's first real-world asset tokenization in the solar PV sector, packaging operational revenue data from about 3,000 solar stations on-chain to obtain 200 million yuan in cross-border financing. Chint Aneng focused on non-natural person residential solar business, while exploring innovative models such as virtual power plants and source-grid-load-storage integration. Dalian Jinpu New Area launched sustainable development "dual-linked" loans that tie interest rates to distributed PV installed capacity and green electricity certificate purchases. Inverters from Chinese manufacturers accounted for nearly 80% of the global market, and PV generation costs in China are now generally below or close to coal power prices.
III. Overseas Market Highlights
In the U.S., demand for the Inflation Reduction Act (IRA) tax credits remained strong in 2024. More than 750,000 U.S. households applied for the solar investment tax credit (ITC), with total tax credits for the residential sector exceeding $6 billion for the year. At the end of 2024, the U.S. Treasury issued final ITC rules clarifying that inverters, storage, and other components can be included in the credit.
Germany enacted the Solarpaket 1 legislation, simplifying the registration process for balcony solar systems. The power limit was raised to 800 W for inverters / 2,000 Wp for modules, and tenants are granted the right to install such systems. In 2024, Germany installed approximately 222,000 balcony solar-plus-storage units, a 97% year-on-year increase. Overall, Germany added only 16 GW of new solar capacity in 2024, still short of the annual target of 19 GW.
IV. Technology Trends
On the technology front, the integration of "solar + storage + virtual power plants" is accelerating. The NEA encourages virtual power plants to aggregate resources such as distributed PV and storage to provide flexible regulation capability. Star Charge's virtual power plant has aggregated over 4,700 MW of adjustable capacity nationwide, using a real-time information platform to integrate distributed residential solar resources into a virtually controllable power source for grid interaction. Balcony solar is emerging as a new niche. The European market is rapidly adopting it, and several leading Chinese PV manufacturers have launched balcony solar products. The domestic Chinese market is expected to jump from thousands to hundreds of thousands of units by 2026. Smart operations & maintenance (O&M) and solar-storage integration are becoming core competitive advantages. Chint Aneng uses intelligent algorithms to reduce unit power generation costs. Monocrystalline PERC remains the mainstream, but N-type technologies such as TOPCon and HJT are accelerating their penetration due to higher conversion efficiencies.
