Before adding solar power purchase agreements (PPAs), establish how much billing work the team handles and where it waits. Understanding capacity supports a reasoned growth plan. Simply multiplying the existing contract count overlooks differences in site numbers, paperwork and approval complexity.
1. Connect growth with after-sale work
IEA PVPS’s September 2026 report describes a continuing expansion of installed PV worldwide. For electricity sellers, portfolio growth also requires capacity for billing and collection.
Count work per cycle
Separate contracts, sites, billing cycles and records needing review. Use observed staff time rather than assuming that every contract requires the same effort.
Find workload peaks
Examine closing days and approvers shared by many invoices. A monthly average can conceal delays when most of the work arrives together.
2. Separate routine work from exceptions
Missing data, incomplete documents and disputes need a clear follow-up path so that ready invoices do not wait behind unrelated unresolved cases.
Define handovers
Name the data reviewer, billing-ready approver and collection owner. Include cover arrangements when the primary responsible person is unavailable.
Assess new requirements
Before onboarding customers, review differences in documentation cycles, accounting systems and approvals. Estimate the additional effort required by these differences.
3. Add a small cohort and measure it
Pilot contracts that represent the proposed new workload. Include a genuine closing cycle before increasing volume and adjust the operating plan from what happens.
Measure stage times
Track days from ready data to invoice issue, rework and time spent resolving exceptions. This shows which step limits throughput rather than only total staff hours.
Address the actual constraint
If records are disconnected, assess integration. If decisions are waiting, review ownership and approval authority as well as software. The required intervention may involve both.
Frequently asked questions
Is contracts per employee a sufficient measure?
Use it alongside complexity, site count and exception workload. Otherwise a higher apparent capacity can conceal lower service quality.
Which customers should a pilot include?
Choose a group resembling the planned expansion, with real document and approval requirements rather than only the easiest invoices.
Explore PPA Billing before scaling the operation
Bring a closing-cycle example and planned contract volumes to DigitechX to discuss the data, connections and responsibilities required for expansion.
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References
Information and sources reviewed: 9 October 2026