Impact of small solar PV on the NSW wholesale electricity market

October 16, 2017

Solar PV

Energy Synapse has been engaged by Solar Citizens to perform an independent analytical study to investigate the impact of small solar PV systems on the NSW wholesale electricity market from May 2016 to April 2017.

Download the full report here.

Key Findings

Small solar PV put significant downward pressure on wholesale electricity prices via the merit order effect

  • Small solar PV systems are no larger than 100 kW. They are most often found on the rooftops of homes and businesses. These solar panel systems contributed 2% to electricity generation in NSW.
  • If there was no small solar installed in NSW, the volume weighted average price of wholesale electricity could have been $29-44/MWh (33-50%) higher than the actual price of $88/MWh.
  • This price depression equates to a cost saving of $2.2-3.3 billion to the NSW market. This benefit is shared by all consumers, regardless of whether or not they have installed solar panels.

Small solar PV reduced both the severity and length of peak demand

  • During the top 10 demand days, small solar reduced the severity of peak demand by an average of 432 MW (3%).
  • Small solar also reduced the length of peak demand by 58%, from an average of 5.3 hours to 2.2 hours.

For more information about this report, please contact Marija Petkovic.

Four reasons why all corporates should consider renewable energy

June 22, 2017

Corporate renewable energy

Up until recently, renewable energy has been a hard sell for the large commercial and industrial sector. However, this has radically changed and we are now seeing a record appetite for corporate power purchase agreements (PPAs). Here are four economic reasons why every company in Australia should be seriously considering renewable energy right now.

1. Renewable energy provides a hedge against price movements in energy markets

Investment in any form of generation, whether it be behind the meter, or an offsite PPA, provides a hedge against electricity price movements.

The ongoing energy crisis in Australia has produced extraordinary volatility in both spot and forward markets. The average spot price from January to May 2017 has more than doubled compared to the same period in 2015 and 16, and even compared to 2014, which had a carbon tax of $24.15/tonne (see Figure 1).

Wholesale spot electricity price

Contracts for electricity to be delivered in 2018 are still trading at high prices despite a range of government interventions being announced. It is worth noting though that QLD had a very sharp downturn in early June (about 13%) following a package of measures announced by the Palaszczuk Government. However, QLD Cal-18s were still trading 27% higher on 20 June 2017 compared to the same time last year (see Figure 2). VIC Cal-18s had the highest price increase over the past year (118%) mainly due to the closure of Hazelwood Power Station.

Cal-18 electricity futures

Buying renewable energy would mean locking in a long-term fixed price for the generated power, and hence limiting exposure to market movements.

2. Cost of renewable energy has dropped significantly

According to Bloomberg New Energy Finance, the cost of solar PV modules has fallen 90% since 2009, and onshore wind by 50%. Renewable energy has now become the cheapest form of new build generation.

In May 2017, Origin Energy signed a 530 MW wind PPA for less than $60/MWh. That price includes both the energy and the LGCs. Furthermore, we have seen solar PV contracts signed in Mexico, for as little as US $26.99/MWh, giving a taste of things to come globally.

The combination of points 1 and 2 have turned renewable energy from an expensive nice to have, to a no brainer, for the large C&I market. For the first time, renewable energy is cheaper than a traditional electricity contract for large energy users.

3. Renewable energy provides a hedge against carbon policy

If there is one lesson large energy users should have learned from the carbon tax, it was the danger of failing to manage climate policy risks in their energy portfolios. Companies with no renewable energy in their portfolios (nearly everyone at the time) were left completely exposed to the price increases when the carbon tax was introduced in July 2012. Some large industrials saw their electricity prices rise by up to 40%. Due to the Government’s rhetoric that price impacts would be negligible, many businesses struggled to pass on the full cost of carbon to their customers and hence were forced to absorb large portions of the cost increase.

We believe that the risk is high that Australia will once again adopt a carbon pricing mechanism. The Finkel Review has recommended a Clean Energy Target. The Government is now also playing with the idea of reverse auctions. Whatever the mechanism, including renewable energy in your portfolio is likely to make it a lot more resilient to future carbon related price risks.

4. No need for upfront capital

Unlike generators, retailers, and network providers, electricity is not the core business for the vast majority of energy users. Most energy users produce unrelated goods and services, and rely on electricity as an input to their operation. Consequently, it is often very difficult for companies to obtain CAPEX approval for non-core business activities such as electricity generation. However, for several years now there have been alternative models such as PPAs that give energy users access to renewable energy with zero upfront capital. This has eliminated one of the biggest obstacles for business.


Please feel free to get in touch if you are interested in exploring renewable energy options for your business. At Energy Synapse, we are experts in renewable energy technology and commercial agreements. We specialise in providing innovative and completely independent advice to help you significantly reduce your electricity cost.

Author: Marija Petkovic, Founder & Managing Director of Energy Synapse
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