Specifying PPA price for IPPs under Trough and Tower systems

Hi,

When I specify the PPA price for IPPs under trough and tower systems, on the base case cash flow spreadsheet energy price($/kWh) gets assigned to a different number. It is usually 27-28% higher than it should be. For example, if I put 1$ as PPA price and 0% for PPA escalation rate, energy price becomes 1.274$ for all years except year zero.

On the other hand for a PV IPP case, the energy price is exactly the value put into the PPA price (whilst 0% escalation rate) on the financing section.

Can you please advise how to remedy this?

Many thanks

Best Regards
David

Hi David,

The default trough and tower cases include TOD adjustment factors that cause the PPA Price reported in the cash flow table to be different than the one you specify on the Financing page (and see in the Metrics table). The default PV cases do not include TOD factors.

Please see PPA Price and Time of Delivery Adjustment Factors for an explanation.

Does that explain the difference you observed?

Best regards,
Paul.

Hi Paul,

Yes, that precisely explains the difference.

Many thanks again.

Regards
David