From EPC Delivery to Program Assurance: A Better Model for Solar Scale-Up
EPC contracting delivers individual installations. It does not deliver programs. At scale, the gap shows up as a long tail of underperforming sites no one can fix.
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Above 50 sites, traditional EPC contracting has diminishing returns on cost, quality, and accountability.
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Program assurance — an independent technical authority across all lots — adds 3–5% to program cost and reduces failure rates by 40–60%.
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The model is standard in infrastructure finance. It is unusual in donor-funded solar. It should not be.
Where EPC works and where it stops
EPC is a fine contracting model for a discrete installation with a single counterpart and a defined acceptance test. It does not generalise to a 200-clinic program across three states with five lots and four EPCs. At that scale, you need an actor whose job is the program, not the lot.
What program assurance does
- Sets and enforces a single technical standard across all lots
- Reviews and approves designs before construction starts
- Witnesses commissioning on a sampled basis and remediates findings
- Runs independent M&E and publishes quarterly performance against benchmark
- Holds the institutional memory the donor and operator both need
Let's build reliable, sustainable solar solutions together.
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