The economic viability of small hydropower has been a significant barrier to development, with conventional projects often facing high upfront costs and long payback periods. The Standard Modular Hydropower cost analysis demonstrates that the SMH approach can dramatically reduce capital expenditures, making small hydro projects more competitive with other renewable energy sources.

Capital Cost Comparisons

Conventional hydropower project costs vary widely depending on site conditions, with large hydropower plants typically costing between $1,050 and $7,650 per kilowatt, while small projects can run from $1,300 to $8,000 per kilowatt . New stream-reach development (greenfield sites) in the U.S. has been estimated at $6,574 to $8,611 per kilowatt .

The SMH approach demonstrates significantly lower capital costs. Installation cost estimates for conceptual SMH facilities come in at $3,419/kW** for Balcony Falls and **$2,124/kW for LPS 566 . These figures represent a substantial reduction compared to conventional greenfield development. A stretch goal for the SMH program is less than $2,000/kW .

Cost Breakdown Analysis

A detailed cost breakdown for the LPS 566 SMH facility shows total Initial Capital Costs (ICC) of $14.34 million . The cost components include:

• Civil Works (Modular Civil Work): $10.43 million (includes site preparation, dams and reservoirs, water conveyances)

• Electro-Mechanical Equipment: $2.79 million (powertrain equipment, turbines, generators)

• Electrical Infrastructure: $0.75 million (switchyard, transmission connection)

• Engineering and Construction Management: $0.37 million

This breakdown demonstrates that civil works represent the largest cost component, followed by electromechanical equipment. The modular approach helps reduce both categories through standardization and prefabrication.

Economic Benefits Beyond Capital Costs

The SMH approach offers economic benefits beyond reduced capital costs. Modular facilities can be constructed more quickly, with estimated installation timelines of 58 weeks for Balcony Falls and 42 weeks for LPS 566 . Faster construction means earlier revenue generation and reduced financing costs. Additionally, the standardization of modules enables economies of scale across multiple projects, further reducing costs over time.

Operational and Maintenance Costs

Hydropower projects benefit from low Operations and Maintenance (O&M) costs, typically 1% to 4% of the initial installed cost annually . For SMH projects, the standardized modular design is expected to simplify maintenance and reduce spare parts inventory requirements. This contributes to a competitive Levelized Cost of Electricity (LCOE), which for hydropower projects can range from $0.02 to $0.19 per kilowatt-hour . The Oil & Gas EPC Market is expected to achieve robust growth by 2035, and the cost-effective principles of standardization are increasingly being applied across the energy sector.

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