Deutsche Bank says solar has already won.

RenewEconomy follows the money in alternative energy, and focuses on a Deutsche Bank report that finds ever-cheaper batteries will make existing solar power tech way more workable:

But by 2030, the solar market will increase 10-fold, as more than 100 million customers are added, and solar’s share of the electricity market jumps to 10 per cent. By 2050, it suggests, solar’s share will be 30 per cent of the market, and developing markets will see the greatest growth.

“Over the next 5-10 years, we expect new business models to generate a significant amount of economic and shareholder value,” the analysts write in the report. Within three years, the economics of solar will take over from policy drivers (subsidies).

Their predictions are underpinned by several observations. The first is that solar is at grid parity in more than half of all countries, and within two years will be at parity in around 80 per cent of countries. And at a cost of just 8c/kWh to 13c/kWh, it is up to 40 per cent below the retail price of electricity in many markets. In some countries, such as Australia, it is less than half the retail price.

The case for solar will be boosted by the emergence of cost-competitive storage, which Deutsche describes as the “next killer app” because it will overcome difficulties in either accessing the grid or net metering policies. “We believe reduction(a) in solar storage costs could act as a significant catalyst for global solar adoption, particularly in high electricity markets such as Europe,” it writes.

Another two of the big markets are in the Middle East and central and south America. There, solar is already at grid parity in the wholesale market, And in areas where there is no grid, then solar is the obvious option.

“Even today, (with about) 20% of the world’s population does not have access to grid electricity,” it notes. “Due to declining costs and ability to deploy the technology without really developing the grid, we expect policy makers in developing countries to proactively promote solar.”

[via vruba]