Solar is the game changer in the industry. Solar is now adding hundreds or thousands of generating points per year, not a handful of distributed generators over decades. This is no longer “business as usual” for power system asset managers, operators and rate designers.

Solar impacts capital distribution expenditure plans. With a changing load and voltage profile, different investments may be needed to mitigate power quality and protection problems caused by solar. Grid reinforcement, new smart inverters and new protection relays may solve a few technical problems, but implementing those new controls in day-to-day operation is complex and requires specialized modelling and simulation tools.

While technical problems are just one side of the equation, financial problems remain when it comes to solar absorption. Solar impacts the utility’s revenue, but triggers grid capital expenditures. So. what is the value of solar? Instead of a flat net-metering rate, many jurisdictions struggling with this regulatory issue are considering “a value-of-solar” rate that is time and location dependant. Defining such rate requires the collaboration of several experts, working on the same scenarios and using the same network information model.

When defining a fair compensation for customers with roof-top solar, the cost of capital expenditures need to be weighted properly and compared with avoided cost of generation, avoided cost of T&D and avoided carbon taxes. An integrated business approach is needed to mitigate the impact of solar on the grid and on ratepayers, while ensuring a fair compensation for prosumers.

Value-of-solar rate design

SG2B’s solution combines the technical and financial expertise to help your company integrating solar in a much more sustainable way. We use locational solar data, market information and the exact distribution grid model to define fair compensation for solar generation. In collaboration with your team, we:
  • Calculate the avoided cost of generation and GHG;
  • Calculate the avoided T&D cost;
  • Estimate the required capital expenditures;
  • Make an assessment of revenue losses over the year;
  • Design a fair Value-of-solar rate;

Smart solar integration

At SG2B, we bridge technical and financial calculations to make the business case of solar hosting investments. We use an enhanced distribution network topology, new load allocation techniques and specialized calculation engines to assess:
  • Solar hosting capacity of your network;
  • Voltage and power quality impact of solar;
  • Battery storage size to absorb solar;
  • Smart inverter set-point calculation per feeder and;
  • Voltage conversion or grid reinforcement scenarios