How does a Solar PPA work?

WATTZ provides a solar consultation that includes a site survey & financial analysis.

You sign a Power Purchase Agreement (PPA) with WATTZ.

WATTZ designs, installs & connects the solar system to the utility grid at little to no upfront cost to you.

You pay for the power you consume at a rate typically less than that charged by the utility company.

WATTZ continues to monitor & maintain the system while you save on your energy bill.

After 20 years, you can sign a new agreement or the system is removed at no costs.

Who bears the cost of the new meter?

The bi-directional smart meter measuring the electricity exported to & imported from DEWA electricity grid will be installed by DEWA without any additional cost to customers over the normal service charges.

The second meter, installed to measure the electricity generated by the PV system, will be charged by DEWA as part of the one-off connection fees.

What happens to my current electricity meter if I install a PV system?

If you have an old electro mechanic meter it will be replaced by a bi-directional smart meter measuring not only the electricity that you will import from DEWA electricity grid, but also the electricity that you will export to DEWA grid. If a DEWA smart meter is already installed at your premises this change will not be required, as your meter will be already fit for the purpose.

A second smart meter will be installed by DEWA to measure the electricity generated by your PV system.

What is the connection procedure?

The connection procedure consists of 4 different stages:

  1. The No Objection Certificate (NOC) stage
  2. The Design Approval stage
  3. The Inspection & Connection stage
  4. The Generation stage

How will energy exported & be represented on my bill?

The electricity produced by the PV system reduces the amount of energy that a customer has drawn from the grid. If, at any point in time, more energy is produced than consumed, the excess is exported to the grid.

The monthly energy bill will only reflect the net amount of energy consumed as demonstrated in the diagram below:


If during a billing period more energy is exported than imported, the invoiced value of electricity will be zero & the surplus electricity will be shown as a credit which can be brought forward in the following billing period as shown in the diagram below:



Net Producer – Production higher than consumption

The following billing period, the credit will be offset against net consumption.



If during several consecutive months more energy is produced than imported from the grid, the credit accumulates & is carried over to the following months.