Falling power prices could benefit mega-sized solar and wind projects


Wholesale power prices in the National Electricity Market (NEM) are forecast to fall 20% over the next two years due to the impact of a “perfect storm” of Covid-19 demand cuts, lower domestic gas prices and large renewable energy projects being commissioned, according to new research from energy market analysts Reputex. Such circumstances are likely to shift sands in renewable energy investment.

While electricity consumption volumes are not yet depicting a steep decline, such as those seen in Europe and the US, the analysts assume a drop in demand over April and May as industrial facilities continue to close or reduce consumption, with restrictions eased by July 2020 and a return to ‘normal’ electricity consumption levels 12-months later. How far prices drop would depend on the extent and duration of lockdown restrictions. According to RepuTex, the country-wide lockdown is expected to lead to a 10 to 40% cut in electricity consumption.

This could see the weighted average NEM wholesale price “around $69 per megawatt-hour (/MWh) for 2019-20, declining toward $55/MWh over the next two years before recovering back above $60/MWh, slightly higher than current futures prices,” the consultancy finds.

On the supply side, around 1.6 GW of solar and wind capacity has been commissioned in FY19-20, RepuTex notes. “Although we expect utility-scale solar and wind commissioning could hibernate for the next one to two quarters due to Covid-19 disruptions, we continue to forecast a total of 6.1 GW of solar and wind to be commissioned over the next two years, along with the contribution of another 1.2 GW of new rooftop PV,” it said.

However, the new circumstances will not have a uniform impact across the renewable energy industry with smaller capacity projects likely to be more adversely affected. “Impacts are more likely to be felt at the lower end of the market, with smaller projects more adversely affected by negative factors such as the lower Australian dollar and associated higher supply chain costs, with the low wholesale electricity price environment to potentially disrupt the economics of these projects,” RepuTex said.

According to Norwegian consultancy Rystad Energy, the Covid-19 pandemic could lead to the postponement or cancellation of financial close on some 3 GW of solar and wind project capacity, as the falling Australian dollar renders projects uneconomical. Since capital expenditure costs have increased in recent months – with rising hardware costs typically priced in US dollars – developers will be challenged to profitably meet power supply contract pricing commitments.

However, RepuTex underlines that despite lower power prices, it does not expect the medium-term environment to kill-off renewable energy investment, particularly at the largest-scale, with new mega-projects able to compete under $50/MWh, such as Acciona’s 1 GW MacIntyre Wind Farm, scheduled to be fully commissioned in 2024. This could eventually lead to a shift in investment towards more new mega-projects, at the expense of smaller capacity developments.

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