Read the passage below regarding rural electrification in Nigeria:
"Rural electrification in Nigeria has long been hindered by the prohibitive costs of expanding the national grid to remote areas. To bridge this gap, off-grid solar mini-grids have emerged as a viable alternative, leveraging decentralized photovoltaic technology to supply reliable power. However, the initial capital expenditure for equipment and battery storage remains a major barrier for local developers. To address this financial constraint, public-private partnerships and international green subsidies have been mobilized to provide low-interest loans and grants. Consequently, local commercial activities have expanded, demonstrating that sustainable financing can effectively drive rural energy access and economic growth."
Based on the text above, arrange the following synthesized summary statements in the correct logical sequence to form a coherent summary of the main arguments.
- 1High infrastructure costs render national grid expansion unviable, prompting the adoption of off-grid solar mini-grids.
- 2High upfront capital costs for equipment and energy storage create a financial bottleneck for mini-grid developers.
- 3Blended finance, including subsidies and public-private loans, resolves the capital constraint for developers.
- 4Targeted financial solutions enable rural electrification, driving broader local economic growth.